M24SR04-G [STMICROELECTRONICS]
Support of NDEF data structure;型号: | M24SR04-G |
厂家: | ST |
描述: | Support of NDEF data structure |
文件: | 总90页 (文件大小:1547K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
M24SR04-Y
M24SR04-G
Dynamic NFC/RFID tag IC with 4-Kbit EEPROM,
NFC Forum Type 4 Tag and I²C interface
Datasheet - production data
• Read up to 246 bytes in a single command
• Write up to 246 bytes in a single command
• 7 bytes unique identifier (UID)
• 128 bits passwords protection
TSSOP8
(DW)
UFDFPN8
SO8
(MN)
(MC)
Package
• 8-lead small-outline package (SO8)
®
ECOPACK2
®
• TSSOP8 ECOPACK2
®
• UFDFPN8 ECOPACK2
WFDFPN8
(MF)
®(2)(3)
• WFDFDN8 ECOPACK2
Wafer
Digital pad
Features
• GPO: configurable General Purpose Output
I2C interface
• RF disable: activation/deactivation of RF
commands
2
• Two-wire I C serial interface supports
1 MHz protocol
Temperature range
• Single supply voltage:
• From - 40 °C up to 85 °C
– 2.7 V to 5.5 V for grade Y
(1)
– 2.4 V to 5.5 V for grade G
Description
Contactless interface
M24SR04 belongs to the ST25 family which
includes all STMicroelectronics NFC/RFID tag and
reader products.
• NFC Forum Type 4 Tag
• ISO/IEC 14443 Type A
• 106 Kbps data rate
The M24SR04 devices is a dynamic NFC/RFID
tag IC with a dual interface. It embeds an
• Internal tuning capacitance: 25 pF
2
EEPROM memory. It can be operated from an I C
interface or by a 13.56 MHz RFID reader or an
NFC phone.
Memory
• 512-byte (4-kbit) EEPROM
• Support of NDEF data structure
• Data retention: 200 years
2
The I C interface uses a two-wire serial interface,
consisting of a bidirectional data line and a clock
2
line. It behaves as a slave in the I C protocol.
• Write cycle endurance:
The RF protocol is compatible with ISO/IEC
14443 Type A and NFC Forum Type 4 Tag.
– 1 million Write cycles at 25 °C
– 600k Write cycles at 85 °C
2. Preliminary data for automotive grade (under
qualification).
1. Limited temperature range -25 to 85 °C
3. Package for automotive grade.
February 2017
DocID024754 Rev 15
1/90
This is information on a product in full production.
www.st.com
Contents
M24SR04-Y M24SR04-G
Contents
1
2
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1
Functional modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.1.1
1.1.2
1.1.3
I2C mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Tag mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Dual interface mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1
2.2
2.3
2.4
2.5
Serial clock (SCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Serial data (SDA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Antenna coil (AC0, AC1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Ground (VSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Supply voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5.1
2.5.2
2.5.3
2.5.4
Operating supply voltage V
CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Device reset in I²C mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power-down conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.6
2.7
RF disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
General purpose output (GPO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.7.1
2.7.2
2.7.3
2.7.4
Session Open configuration (GPO field = 0xX1 or 0x1X) . . . . . . . . . . . 14
WIP Writing in Progress configuration (GPO field = 0xX2 or 0x2X) . . . 15
2
I C answer ready configuration (GPO field = 0xX3) . . . . . . . . . . . . . . . 16
MIP NDEF Message writing in Progress configuration
(GPO field = 0x3X) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.7.5
2.7.6
2.7.7
INT Interrupt configuration (GPO field = 0xX4 or 0x4X) . . . . . . . . . . . . 18
State Control configuration (GPO field = 0xX5 or 0x5X) . . . . . . . . . . . . 19
RF busy configuration (GPO field = 0x6X) . . . . . . . . . . . . . . . . . . . . . . . 20
3
M24SR04 memory management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1
Memory structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1.1
3.1.2
3.1.3
3.1.4
File identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CC file layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
NDEF file layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
System file layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2
Read and write access rights to the memory . . . . . . . . . . . . . . . . . . . . . . 25
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Contents
3.2.1
3.2.2
3.2.3
State of the Read and Write access rights . . . . . . . . . . . . . . . . . . . . . . . 25
Changing the read access right to NDEF files . . . . . . . . . . . . . . . . . . . . 26
Changing the write access right to NDEF files . . . . . . . . . . . . . . . . . . . 27
3.3
3.4
3.5
Access right life time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
NDEF file passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
I2C password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.5.1
I²C password and I²C protect field of the System file . . . . . . . . . . . . . . . 28
4
5
Communication mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.1
4.2
Master and slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
M24SR04 session mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.1
4.2.2
RF token . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2
I C token . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
I²C and RF command sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1
5.2
Structure of the command sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
I-Block format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2.1
5.2.2
C-APDU: payload format of a command . . . . . . . . . . . . . . . . . . . . . . . . 32
R-APDU: payload format of a response . . . . . . . . . . . . . . . . . . . . . . . . 33
5.3
5.4
5.5
5.6
R-Block format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
S-Block format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CRC of the I2C and RF frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
NFC Forum Type 4 Tag protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.6.1
5.6.2
5.6.3
5.6.4
5.6.5
5.6.6
5.6.7
5.6.8
Commands set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Status and error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
NDEF Tag Application Select command . . . . . . . . . . . . . . . . . . . . . . . . 38
Capability Container Select command . . . . . . . . . . . . . . . . . . . . . . . . . . 38
NDEF Select command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
System File Select command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
ReadBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
UpdateBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.7
ISO/IEC 7816-4 commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.7.1
5.7.2
5.7.3
5.7.4
Verify command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Change Reference Data command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Enable Verification Requirement command . . . . . . . . . . . . . . . . . . . . . . 45
Disable Verification Requirement command . . . . . . . . . . . . . . . . . . . . . 46
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Contents
M24SR04-Y M24SR04-G
5.8
ST Proprietary command set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.8.1
5.8.2
5.8.3
5.8.4
5.8.5
5.8.6
ExtendedReadBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
EnablePermanentState command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
DisablePermanentState command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
UpdateFileType command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
SendInterrupt command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
StateControl command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.9
Specific RF command set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.9.1
5.9.2
5.9.3
Anticollision command set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
RATS command and ATS response . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
PPS command & response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.10 Specific I²C command set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.10.1 GetI2Csession command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.10.2 KillRFsession command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6
7
RF device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.1
6.2
6.3
6.4
Anticollision and Device Activation command set for the RF interface . . 56
Open an RFsession . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Close an RFsession . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Applicative command set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
I2C device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
I2C communication protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Start condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
I²C token release sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
I²C timeout on clock period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Acknowledge bit (ACK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Data input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
I²C device address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
I²C frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.9.1
Example of I²C frame commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.10 Open an I²C session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
7.11 Close the I²C session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
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8
Functional procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
Selection of an NDEF message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Reading of an NDEF message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Reading a locked NDEF file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Locking an NDEF file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Unlocking an NDEF file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Reaching the read-only state for an NDEF file . . . . . . . . . . . . . . . . . . . . . 64
Changing an NDEF password procedure . . . . . . . . . . . . . . . . . . . . . . . . . 64
Changing a File type Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Updating a NDEF file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9
UID: Unique identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10
11
I2C DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.1 I2C timing measurement condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12
13
14
15
GPO parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Write cycle definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
RF electrical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
15.1 SO8N package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
15.2 TSSOP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
15.3 UFDFPN8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
15.4 WFDFPN8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
16
17
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
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List of tables
M24SR04-Y M24SR04-G
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Functional mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
File identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CC file layout for 1 NDEF file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
NDEF file layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Field list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Details about I2C watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Details about the GPO field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Details about the RF Session field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Details about the ST reserved field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Details about the RF enable field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Read access right. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Write access right . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
RF and I²C command sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
I-Block format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
PCB field of the I-Block format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
C-APDU format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
R-APDU format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
R-Block format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
R-Block detailed format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
S-Block format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
S-Block detailed format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Command set overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Status code of the M24SR04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Error code of the M24SR04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
C-APDU of the NDEF Tag Application Select command . . . . . . . . . . . . . . . . . . . . . . . . . . 38
R-APDU of the NDEF Tag Application Select command . . . . . . . . . . . . . . . . . . . . . . . . . . 38
C-APDU of the Capability Container Select command. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
R-APDU of the Capability Container Select command. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
C-APDU of the NDEF Select command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
R-APDU of the NDEF Select command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
C-APDU of the System File Select command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
R-APDU of the System File Select command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
C-APDU of the ReadBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
R-APDU of the ReadBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
C-APDU of the UpdateBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
R-APDU of the UpdateBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Verify command format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
R-APDU of the Verify command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Change reference data command format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
R-APDU of the Change Reference Data command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Enable Verification Requirement command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
R-APDU of the Enable Verification Requirement command. . . . . . . . . . . . . . . . . . . . . . . . 46
Disable Verification Requirement command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
R-APDU of the Disable Verification Requirement command . . . . . . . . . . . . . . . . . . . . . . . 47
C-APDU of the ExtendedReadBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
R-APDU of the ExtendedReadBinary command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
EnablePermanentState command format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Table 26.
Table 27.
Table 28.
Table 29.
Table 30.
Table 31.
Table 32.
Table 33.
Table 34.
Table 35.
Table 36.
Table 37.
Table 38.
Table 39.
Table 40.
Table 41.
Table 42.
Table 43.
Table 44.
Table 45.
Table 46.
Table 47.
Table 48.
6/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
List of tables
Table 49.
Table 50.
Table 51.
Table 52.
Table 53.
Table 54.
Table 55.
Table 56.
Table 57.
Table 58.
Table 59.
Table 60.
Table 61.
Table 62.
Table 63.
Table 64.
Table 65.
Table 66.
Table 67.
Table 68.
Table 69.
Table 70.
Table 71.
Table 72.
Table 73.
Table 74.
Table 75.
Table 76.
Table 77.
Table 78.
Table 79.
Table 80.
Table 81.
Table 82.
Table 83.
Table 84.
Table 85.
R-APDU table of the EnablePermanentState command . . . . . . . . . . . . . . . . . . . . . . . . . . 48
DisablePermanentState command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
R-APDU of the DisablePermanentState command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
UpdateFileType command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
R-APDU of the UpdateFileType command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
SendInterrupt command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
R-APDU of the SendInterrupt command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
StateControl command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
R-APDU of the StateControl command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Commands issues by the RF host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
RATS command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Conversion from FDSI to FSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
ATS response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
PPS command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Ascending and descending data rate coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
PPS response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Specific I²C commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
GetI2Csession command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
KillRFsession command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
I2C device address format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
2
I C frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
I2C host to M24SR04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
M24SR04 to I2C host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
UID format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
2
I C operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
AC test measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Input parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
2
I C DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
2
I C AC characteristics (400 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
2
I C AC characteristics (1 MHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Device select code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
GPO timings measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Write cycle definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Default operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
RF characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
SO8N - 8-lead plastic small outline, 150 mils body width,
package data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
TSSOP8 - 8-lead thin shrink small outline, 169 mils width, package data . . . . . . . . . . . . . 81
UFDFPN8 - 8- lead, 2 x 3 mm, 0.5 mm pitch ultra thin profile fine pitch
Table 86.
Table 87.
dual flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
WFDFPN8 8-lead thin fine pitch dual flat package no lead
Table 88.
mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Ordering information scheme for packaged devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Table 89.
Table 90.
DocID024754 Rev 15
7/90
7
List of figures
M24SR04-Y M24SR04-G
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
M24SR04 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8-pin package connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
GPO configured as Session Open (GPO field = 0xX1 or 0x1X). . . . . . . . . . . . . . . . . . . . . 14
GPO configured as WIP (GPO field = 0xX2 or 0x2X). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2
GPO configured as I C answer ready (GPO field = 0xX3) . . . . . . . . . . . . . . . . . . . . . . . . . 16
GPO configured as MIP (GPO field = 0x3X). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
GPO configured as INT (GPO field = 0xX4 or 0x4X) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
GPO configured as State Control (GPO field = 0xX5 or 0x5X). . . . . . . . . . . . . . . . . . . . . . 19
GPO configured as RF busy (GPO field = 0x6X) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10. Changing the read access right to an NDEF file. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 11. Changing the write access right to an NDEF file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 12. Command and response exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 13. I²C token release sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 14. NDEF tag Application Select command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 15. AC test measurement I/O waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
2
Figure 16. I C AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 17. Maximum Rbus value with fC = 400 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 18. Maximum Rbus value with fC = 1 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 19. I2C bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 20. SO8N - 8-lead plastic small outline, 150 mils body width, package outline . . . . . . . . . . . . 79
Figure 21. SO8N - 8-lead plastic small outline, 150 mils bosy width,
package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 22. TSSOP8 - 8-lead thin shrink small outline, 3 x 4 mm, 0.5 mm pitch
package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 23. UFDFPN8 - 8-lead, 2 x 3 mm, 0.5 mm pitch ultra thin profile fine pitch
dual flat package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Figure 24. WFDFPN8 (MLP8) 8-lead, 2 x 3 mm, 0.5 mm pitch very thin fine pitch
dual flat package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
Functional description
1
Functional description
2
The M24SR04 device is a dynamic NFC/RFID tag that can be accessed either from the I C
2
or the RF interface. The RF and I C host can read or write to the same memory, that is why
only one host can communicate at a time with the M24SR04. The management of the
interface selection is controlled by the M24SR04 device itself.
The RF interface is based on the ISO/IEC 14443 Type A standard. The M24SR04 is
compatible with the NFC Forum Type 4 Tag specifications and supports all corresponding
commands.
2
The I C interface uses a two-wire serial interface consisting of a bidirectional data line and a
clock line. The devices carry a built-in 4-bit device type identifier code in accordance with
the I²C bus definition.
2
The device behaves as a slave in the I C protocol.
Figure 1 displays the block diagram of the M24SR04 device.
Figure 1. M24SR04 block diagram
6XSSO\ꢄYROWDJH
9&&
ꢁ
IRUꢄ,ꢄꢄ&ꢄLQWHUIDFH
h/ꢀꢁΘꢁƐLJƐƚĞŵꢁꢁꢁꢁ
ĂƌĞĂ
3RZHUꢄꢄꢄꢄ
PDQDJHPHQWꢄꢄꢄꢄ
XQLW
$QDORJꢄ)URQWꢋHQGꢄ
EDVHGꢄRQꢄ
5)ꢄLQWHUIDFHꢄꢄ
EDVHGꢄRQꢄ
,62ꢅ,(&ꢄꢂꢆꢆꢆꢀꢄ
7\SHꢄ$ꢄVWDQGDUG
$&ꢂ
$&ꢊ
,62ꢅ,(&ꢄꢂꢆꢆꢆꢀꢄ
7\SHꢄ$ꢄ
,QWHUQDOꢄWXQLQJ
FDSDFLWDQFHꢄꢄ
VWDQGDUG
1)&ꢄ)RUXPꢄ
7\SHꢄꢆꢄ7DJꢄ
SURWRFRO
5)ꢄ
GLVDEOH
hƐĞƌꢁŵĞŵŽƌLJ
*32
'LJLWDOꢄXQLW
6&/
6'$
,ꢁ&ꢄLQWHUIDFH
ꢁꢇꢈꢄ9ꢄ±ꢄꢉꢇꢉꢄ9
1)&B,ꢁ&
LQWHUIDFH
*1'
06ꢀꢁꢀꢂꢃ9ꢀ
DocID024754 Rev 15
9/90
20
Functional description
M24SR04-Y M24SR04-G
Direction
Table 1. Signal names
Function
Signal name
SDA
Serial data
I/O
SCL
Serial clock
Input
AC0, AC1
VCC
Antenna coils
-
Supply voltage
-
VSS
Ground
-
GPO
Interrupt output (1)
Disable the RF communication (2)
Open drain output
Input
RF disable
1. An external pull-up > 4.7 kΩ is required.
2. An external pull-down is required when the voltage on Vcc is above its POR level.
Figure 2. 8-pin package connections
ꢂ
ꢁ
ꢀ
ꢆ
ꢃ
ꢈ
ꢌ
ꢉ
5)ꢄGLVDEOH
$&ꢊ
9&&
*32
6&/
6'$
$&ꢂ
966
06ꢀꢊꢈꢆꢆ9ꢁ
1. See Package mechanical data section for package dimensions, and how to identify pin 1.
1.1
Functional modes
The M24SR04 has two functional modes available. The difference between the modes lies
in the power supply source (see Table 2).
Table 2. Functional mode
Mode
I2C mode
Supply source
Comments
Vcc
The I2C interface is available
Tag mode
RF field only
The 2C interface is disconnected
Both I2C and RF interfaces are available
Dual interface mode
RF field or Vcc
2
1.1.1
1.1.2
I C mode
2
2
M24SR04 is powered by V . The I C interface is connected to the M24SR04. The I C host
can communicate with the M24SR04 device.
CC
Tag mode
The M24SR04 is supplied by the RF field and can communicate with an RF host (RFID
reader or an NFC phone). The User memory can only be accessed by the RF commands.
10/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
Functional description
1.1.3
Dual interface mode
2
2
Both interfaces, RF and I C, are connected to the M24SR04 and both RF or I C host can
communicate with the M24SR04 device. The power supply and the access management
are carried out by the M24SR04 itself. For further details, please refer to the token
mechanism chapter.
DocID024754 Rev 15
11/90
20
Signal descriptions
M24SR04-Y M24SR04-G
2
Signal descriptions
2.1
Serial clock (SCL)
This input signal is used to strobe all data in and out of the device. In applications where this
signal is used by slave devices to synchronize the bus to a slower clock, the bus master
must have an open drain output, and a pull-up resistor must be connected from Serial clock
(SCL) to V . (Figure 17 indicates how the value of the pull-up resistor can be calculated).
CC
In most applications, though, this method of synchronization is not employed, and so the
pull-up resistor is not necessary, provided that the bus master has a push-pull (rather than
open drain) output.
2.2
2.3
Serial data (SDA)
This bidirectional signal is used to transfer data in or out of the device. It is an open drain
output that may be wire-OR'ed with other open drain or open collector signals on the bus. A
pull-up resistor must be connected from Serial data (SDA) to V . (Figure 17 indicates how
CC
the value of the pull-up resistor can be calculated).
Antenna coil (AC0, AC1)
These inputs are used to connect the device to an external coil exclusively. It is advised not
to connect any other DC or AC path to AC0 or AC1.
When correctly tuned, the coil is used to access the device using NFC Forum Type 4
commands.
2.4
Ground (VSS)
V
, when connected, is the reference for the V supply voltage for all pads, even AC0
CC
SS
and AC1.
2.5
Supply voltage (VCC)
This pin can be connected to an external DC supply voltage.
Note:
2.5.1
An internal voltage regulator allows the external voltage applied on V to supply the
M24SR04.
CC
Operating supply voltage V
CC
Prior to selecting the M24SR04 and issuing instructions to it, a valid and stable V voltage
CC
within the specified [V (min), V (max)] range must be applied. To maintain a stable DC
CC
CC
supply voltage, it is recommended to decouple the V line with suitable capacitors (usually
CC
of the order of 10 nF and 100 pF) close to the V /V package pins.
CC SS
This voltage must remain stable and valid until the end of the transmission of the instruction
and, for a writing instruction (UpdateBinary, ChangeReferenceData,
12/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
Signal descriptions
EnableVerificationRequirement, DisableVerificationRequirement, EnablePermanentState,
DisablePermanentState, until the completion of the internal I²C write cycle (t ).
W
2.5.2
2.5.3
Power-up conditions
When the power supply is turned on, V rises from V to V . The V rise time must not
vary faster than 1V/µs.
CC
SS
CC
CC
Device reset in I²C mode
In order to prevent inadvertent write operations during power-up, a power-on reset (POR)
circuit is included. At power-up (continuous rise of V ), the M24SR04 does not respond to
CC
any I²C instruction until V has reached the power-on reset threshold voltage (this
CC
threshold is lower than the minimum V operating voltage defined). When V passes
CC
CC
over the POR threshold, the device is reset and enters the Standby power mode. However,
the device must not be accessed until V has reached a valid and stable V voltage
CC
CC
within the specified [V (min), V (max)] range.
CC
CC
In a similar way, during power-down (continuous decrease in V ), as soon as V drops
CC
CC
below the power-on reset threshold voltage, the M24SR04 stops responding to any
instruction sent to it.
2.5.4
Power-down conditions
During power-down (continuous decay of V ), the M24SR04 must be in Standby power
CC
mode (mode reached after decoding a Stop condition, assuming that there is no internal
operation in progress).
2.6
RF disable
This input signal is used to disable the RF communication. When the voltage on the V pin
CC
is below the POR level or not connected, an internal pull-down resistor is connected on this
pad. Thus, the RF disable pad is maintained to the low level and the RF analog front end is
activated. When the voltage on the V pin is higher than the POR level, the I²C host shall
CC
set this pin to enable or disable the RF communication. In Dual interface mode, RF disable
must not be left floating.
2.7
General purpose output (GPO)
The GPO pad is an open drain pad and a external pull-up resistor shall be connected to it.
This pad is a configurable output signal. On delivery, GPO is configured as Session opened.
2
Its behavior is consistent with the I C or RF session activated and with the mode chosen by
2
the user. The GPO pad is enable when an RF or an I C session is open. When neither an
2
RF nor an I C session is open, the GPO is high impedance.
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Signal descriptions
M24SR04-Y M24SR04-G
(1)
The user can select one of these configurations
:
2
•
•
SessionOpen: an RF or I C session is ongoing.
MIP (NDEF Message updating In Progress): the RF host is writing an NDEF length
different from 0x0000. This mode can be used to detect when the RF host changes the
NDEF message as defined by the NFC Forum.
•
•
WIP (Writing In Progress): the M24SR04 is executing a writing operation.
2
INT (interrupt): the I C or RF host can force the M24SR04 to send a negative pulse on
the GPO pin.
2
2
•
•
I C ready response: an I C response is ready to be read by the I²C host.
2
State mode: the I C or RF host can control the state of the GPO pad during the RF
session.
•
RF busy: an RF host is communicating with the M24SR04.
2.7.1
Session Open configuration (GPO field = 0xX1 or 0x1X)
2
When the GPO is configured as "Session Open", it goes to the Low state when an RF or I C
session is ongoing (see Figure 3).
An RF session is taken when M24SR04 receives a valid Select Application. The session is
released after M24SR04 has received a valid Deselect command, if M24SR04 has received
2
a Kill RF session command in I C or when the RF field became OFF.
2
An I C session is taken when M24SR04 receives a valid Get session command or a valid
2
Kill RF session command. The session is released after M24SR04 has received I C token
release sequence or after a Power Off.
GPO is driven low after a delay (1) or (3) when the session is open.
GPO is released after a delay (2) or (4) when the session is released.
Figure 3. GPO configured as Session Open (GPO field = 0xX1 or 0x1X)
^ĞƐƐŝŽŶ
Z&ꢁ
^ĞƐƐŝŽŶ
Z&ꢁ^ĞƐƐŝŽŶ
/Ϯꢂꢁ^ĞƐƐŝŽŶ
;ϰͿ
;ϯͿ
;ϭͿ
;ϮͿ
'WKꢁĂƐꢁ^ĞƐƐŝŽŶꢁKƉĞŶ
D^ϯϬϳϴϰsϮ
1. CmdEOFtoGPlow (RF command End of frame to GPORF Session pad low)
2. CmdEOFtoGPHZ (RF command End of frame to GPORF Session pad HZ)
3. CmdSTPtoGPlow (I2C command stop to GPO low)
4. AnswerlbLBtoGPHZ (I2C answer last bit of last byte to GPO HZ)
1. See Table 81 for more details.
14/90
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Signal descriptions
2.7.2
WIP Writing in Progress configuration (GPO field = 0xX2 or 0x2X)
2
When the GPO is configured as "WIP", it goes to the Low state during an I C or RF writing
operation.
2
During an RF or I C session, when M24SR04 updates a file, GPO is driven low after a delay
(1) or (3) following the beginning of the correspondent UpdateBinary command execution.
GPO will remain low during the writing time (2) or (4), before being released.
Figure 4. GPO configured as WIP (GPO field = 0xX2 or 0x2X)
;ϭͿꢁ
Z&ꢁŽƌꢁ/Ϯꢂꢁ
ĐŚĂŶŶĞůꢁꢁ
Žƌꢁ
;ϯͿ
hƉĚĂƚĞꢁ
ĐŽŵŵĂŶĚ
ꢄŶĚꢁŽĨꢁǁƌŝƚŝŶŐꢁ
ŽƉĞƌĂƚŝŽŶ
ꢃŶLJꢁŽƚŚĞƌꢁ
ĐŽŵŵĂŶĚ
'WKꢁĂƐꢁt/W
;ϮͿꢁŽƌꢁ;ϰͿ
D^ϯϬϳϴϲsϯ
1. CmdSTPtoGPlow (I2C Command Stop to GPO low)
2. Writing time duration
3. CmdEOFtoGPlow (RF Command End of frame to GPO low)
4. Writing time duration
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Signal descriptions
2
M24SR04-Y M24SR04-G
2.7.3
I C answer ready configuration (GPO field = 0xX3)
2
When the GPO is configured as I C answer ready, it goes to the Low state when the
2
2
M24SR04 has finished to treat the I C command and is ready to send the I C response.
2
2
During an I C session, after receiving a valid I C command, GPO pin is driven low after a
2
delay when M24SR04 is ready to deliver a response on the I C bus.
GPO is released when M24SR04 receives a new command.
2
Figure 5. GPO configured as I C answer ready (GPO field = 0xX3)
/ϸꢂꢁĐŚĂŶŶĞů
KƉĞŶꢁ
^ĞƐƐŝŽŶ
ꢃŶLJꢁ/ϸꢂꢁ
ĐŽŵŵĂŶĚ
DϮϰ^Zdždžꢁ
ƌĞƐƉŽŶƐĞ
ꢃŶLJꢁ/ϸꢂꢁ
ĐŽŵŵĂŶĚ
DϮϰ^Zdždžꢁ
ƌĞƐƉŽŶƐĞ
ꢃŶLJꢁ/ϸꢂꢁ
ĐŽŵŵĂŶĚ
DϮϰ^Zdždžꢁ
ƌĞƐƉŽŶƐĞ
'WKꢁĂƐꢁ/ϸꢂꢁ
ĂŶƐǁĞƌꢁƌĞĂĚLJ
D^ϯϬϳϴϴsϰ
16/90
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M24SR04-Y M24SR04-G
Signal descriptions
2.7.4
MIP NDEF Message writing in Progress configuration
(GPO field = 0x3X)
When the GPO is configured as MIP, its state goes to the low state when the RF host writes
the NDEF length to another value than 0x0000.
During an RF session, when M24SR04 changes an NDEF file and updates the NDEF length
with a value different from 0x0000, GPO is driven low after a delay (1) following the
beginning of the correspondent UpdateBinary command execution.
GPO will remain low during the writing time (2), before being released.
Figure 6. GPO configured as MIP (GPO field = 0x3X)
Z&ꢁĐŚĂŶŶĞů
hƉĚĂƚĞꢁƚŚĞꢁEꢀꢄ&ꢁ
ůĞŶŐƚŚꢁ͊сꢁϬdžϬϬϬϬ
DϮϰ^Zdždžꢁ
ƌĞƐƉŽŶƐĞ
ꢃŶLJꢁŽƚŚĞƌꢁ
ĐŽŵŵĂŶĚ
'WKꢁĂƐꢁD/W
;ϭͿ
;ϮͿ
D^ϯϬϳϴϱsϯ
1. CmdEOFtoGPlow (RF command End of frame to GPO low)
2. Writing time duration
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Signal descriptions
M24SR04-Y M24SR04-G
2.7.5
INT Interrupt configuration (GPO field = 0xX4 or 0x4X)
2
The I C or RF host can send a negative pulse on the GPO pad. The GPO pad goes to the
low state at the end of the command and goes to the high state at the end of the M24SR04
response.
2
During an RF or I C session, when M24SR04 receives a valid Interrupt command,
M24SR04 GPO pin is driven low after (1) or (3) for a duration of (4) in RF, or after
responding in I2C (2). Then GPO pin is released.
Figure 7. GPO configured as INT (GPO field = 0xX4 or 0x4X)
Z&ꢁŽƌꢁ/ϸꢂꢁ
ĐŚĂŶŶĞů
;ϭͿꢁ
Žƌꢁ
;ϯͿ
;ϮͿꢁꢁ
DϮϰ^Zdždžꢁ
ƌĞƐƉŽŶƐĞ
^ĞŶĚꢁ
/ŶƚĞƌƌƵƉƚ
ꢃŶLJꢁŽƚŚĞƌꢁ
ŽƉĞƌĂƚŝŽŶ
'WKꢁĂƐꢁ/Ed
;ϰͿꢁꢁ
D^ϯϬϳϴϳsϯ
1. CmdSTPtoGPlow (I2C command Stop to GPO low)
2. After NewCmdlbFB (new I2C command last bit of first byte)
or
after AnswerlbFB (I2C answer last bit of first byte)
3. CmdEOFtoGPlow (RF command End of frame to GPO low)
4. GPO pulse duration
18/90
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M24SR04-Y M24SR04-G
Signal descriptions
2.7.6
State Control configuration (GPO field = 0xX5 or 0x5X)
2
When the GPO is configured as State Control, the I C or RF host can control the state of the
GPO by sending a dedicated command.
2
During an RF or I C session, the M24SR04 can control the GPO pin. After receiving a valid
Set GPO command, GPO pin is driven low after a delay (1) or (3). GPO will be released
after a valid Reset command or after a Power off or upon closing the RF session.
Figure 8. GPO configured as State Control (GPO field = 0xX5 or 0x5X)
5)ꢄRUꢄ,ð&ꢄ
FKDQQHO
ꢎꢂꢏꢄ
RUꢄ
ꢎꢀꢏ
ꢎꢁꢏꢄ
RUꢄ
ꢎꢆꢏ
5HVHWꢄ*32ꢄ
FRPPDQGꢄꢄ
$Q\ꢄRWKHUꢄ
FRPPDQG
6HWꢄ*32ꢄ
FRPPDQG
*32ꢄDVꢄ
6WDWH&RQWURO
06ꢀꢊꢈꢃꢍ9ꢆ
1. CmdSTPtoGPlow (I2C Set GPO command Stop to GPO low)
2. CmdSTPtoGPHZ (I2C Reset GPO command Stop to GPO HZ)
3. CmdEOFtoGPlow (RF Set GPO command End of frame to GPO low)
4. CmdEOFtoGPHZ (RF Reset GPO command End of frame to GPO HZ)
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Signal descriptions
M24SR04-Y M24SR04-G
2.7.7
RF busy configuration (GPO field = 0x6X)
When the GPO is configured as RF busy, the GPO goes to the low state when the
M24SR04 is processing an RF command or when an RFsession is ongoing.
When an RF field is present, GPO is driven low after a delay (1) when M24SR04 detects the
first command. If the RF session is ongoing and M24SR04 receives a not-supported
command, GPO remains low. It will be released only at the end of the RF session, after (2).
Figure 9. GPO configured as RF busy (GPO field = 0x6X)
Z&ꢁĐŚĂŶŶĞů
;ϭͿ
;ϮͿ
;ϭͿ
;ϮͿ
Z&ꢁ
ĐŽŵŵĂŶĚ
^ĞŶƐZĞƋꢁΘꢁ
^ĞŶƐZĞƐ
Z&ꢁĐŽŵŵĂŶĚꢁ
ŶŽƚꢁƐƵƉƉŽƌƚĞĚꢁꢁꢁꢁ
^;ꢀꢄ^Ϳ
'WKꢁĂƐꢁZ&ꢁďƵƐLJ
D^ϯϬϳϵϬsϯ
1. CmdSOFtoGPlow (RF command Start of frame to GPO low)
2. CmdEOFtoGPHZ (RF command End of frame to GPO HZ)
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M24SR04 memory management
3
M24SR04 memory management
3.1
Memory structure
The M24SR04 supports the NDEF Tag Application as defined in the NFC Forum Type 4
Tag. The M24SR04 is composed of three files:
•
•
•
One Capability Container file
One NDEF file
One System file: this is an ST-proprietary file
The System file contains some information on the configuration of the M24SR04 device.
The CC file gives some information about the M24SR04 itself and the NDEF file. The NDEF
file contains the User data.
3.1.1
File identifier
The file identifier is the value used in the Select command to select a file.
Table 3. File identifier
File identifier
0xE101
Meaning
System file
CC file
0xE103
0x0001
NDEF file
3.1.2
CC file layout
The CC file gives some information about the M24SR04 and the NDEF file. This file is a
read-only file for the RF or I²C host and cannot be modified by issuing a write command.
The T field, Read Access and Write Access fields can be changed by the RF or I²C host by
issuing a specific process (refer to Section 8: Functional procedures).
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M24SR04 memory management
File offset
M24SR04-Y M24SR04-G
Table 4. CC file layout for 1 NDEF file
Meaning
Value
Comments
15 bytes
0x0000
0x0002
0x0003
0x0005
0x0007
0x0008
0x0009
Number of bytes of CC file
Mapping version(1)
Maximum number of bytes that can be read
0x000F
0x20 or 0x10
0x00F6
V 2.0 or V 1.0
246 bytes
246 bytes
T field
Maximum number of bytes that can be written 0x00F6
0x04 (2)
0x06
L field
0x0001
FileID
NDEF file control TLV
0x0200
Maximum NDEF
file size
0x000B
0x000D
0x000E
0x00 (2)
0x00 (2)
Read access
Write access
1. According to the reader.
2. Delivery state.
3.1.3
NDEF file layout
The NDEF file contains the NDEF message which contains the User data. The RF host or
the I²C host can read and write data inside the file. The first two bytes named NDEF
Message Length define the size of the NDEF message. The NDEF Message Length shall
be managed by the application and the M24SR04 device does not check if its value is
relevant vs the data written by the RF or I²C host. The M24SR04 device uses the NDEF
Message Length, e. g. the standard read can be processed only inside the NDEF message;
otherwise, the M24SR04 device returns an error code. For more details about the read
command, refer to Section 5.6.7: ReadBinary command.
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M24SR04 memory management
Table 5. NDEF file layout
Byte 0 Byte 1
NDEF message length
File offset
Byte 2
Byte 3
0x0000
0x0004
...
User data
User data
User data
User data
User data
User data
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
0x01FC
User data
3.1.4
System file layout
The system file specifies the configuration of the M24SR04. Table 6 lists the different fields.
Table 6. Field list
Numberof
File offset
Field name
Read access Write access
Delivery state (1)
bytes
0x0000
0x0002
0x0003
0x0004
0x0005
0x0006
Length system file
I²C protect
2
1
1
1
1
1
I²C or RF
I²C or RF
I²C or RF
I²C or RF
I²C or RF
I²C or RF
-
0x0012
0x01
I²C (2)
I²C (2)
I²C (2)
I²C (2)
I²C (2)
I²C watchdog
GPO
0x00
0x11
ST reserved
RF enable
0x00
0x xxxx xxx1(3)
NDEF File
number (RFU)
0x0007
0x0008
1
7
I²C or RF
I²C or RF
none
none
0x00
0x0286 xx xx xx xx
xxor 0x028E xx xx xx
xx xx(4) (5)
UID
0x000F
0x0011
Memory Size
Product Code
2
1
I²C or RF
I²C or RF
none
none
0x01FF
0x86 or 0x8E(5)
1. The delivery state for all passwords = 0x00000000000000000000000000000000.
2. The access is granted when the field I²C protect is set to the state Unprotected or when the right I²C
password was correctly received (see Section 3.5: I2C password).
3. Refer Table 11.
4. x values are defined by ST to insure UID unicity.
5. Automotive grade
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M24SR04 memory management
File offset
M24SR04-Y M24SR04-G
Table 7. Details about I2C watchdog
b7- b0
The “I2C Watchdog” ensures the I2C host will not keep the session open, while
there is no more activity on the I2C bus (between the stop bit of the previous
transaction and the start bit of the next one)
0x0003
– 0x00 (default value): the Watchdog is off
– Other values: If programmed to a non null value N, the Watchdog is enabled
and counts N*30 ms (30 ms is approximate) before releasing the I2C session.
Table 8. Details about the GPO field
File offset
b7
b6-b4
b3
b2-b0
0x0004
RFU
When an RF session is open:
0b000: High impedance
0b001: Session opened
0b010: WIP
0b011: MIP
0b100: Interrupt
0b101: State Control
0b110: RF Busy
0b111: RFU
RFU
When an I²C session is open:
0b000: High impedance
0b001: Session opened
0b010: WIP
0b011: I²C Answer Ready
0b100: Interrupt
0b101: State Control
0b110: RFU
0b111: RFU
Table 9. Details about the RF Session field
File offset
0x0004
b7
b6-b4
b3-b0
RFU
When an RF session is open:
0b001: Session opened
RFU
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Table 10 gives some details about the ST reserved field.
Table 10. Details about the ST reserved field
File offset b7-b0
0x0005
0x00
Table 11 gives some details about the RF enable field.
Table 11. Details about the RF enable field
b7 b6-b4 b3 b2-b1
File offset
0x0006
b0
0: the RF field is off (1)
1: the RF field is on (1)
RFU
0: the RF disable pad is at low state (1)
1: the RF disable pad is at high state (1)
RFU
0: the M24SR04 does not decode the command received from the RF interface
1: the M24SR04 decodes the command received from the RF interface
1. this field is written by the M24SR04.
3.2
Read and write access rights to the memory
An NDEF file can be locked for read or write accesses. It is also protected by a 128-bit
password that the host shall present before accessing the NDEF file. There are two 128-bit
passwords, one for the read access and the other one for the write access.
An NDEF file can be permanently locked for read or write accesses. Thus, the host cannot
access the NDEF file.
The read password shall be sent to the M24SR04 device before reading a read-locked
NDEF file.
The write password shall be present on the M24SR04 device before writing a write-locked
NDEF file. The write password shall be sent to change the read or write access. The read or
write access right is defined for the NDEF file.
3.2.1
State of the Read and Write access rights
Two bytes in the CC file are used to define the Read and Write access rights to the NDEF
file. For more details, refer to Section 3.1.2: CC file layout.
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M24SR04 memory management
Value
M24SR04-Y M24SR04-G
Table 12. Read access right
Meaning
0x00
0x80
0xFE
Read access without any security
Locked (1)
Read not authorized
1. The read password shall be sent before reading in the NDEF file.
Table 13. Write access right
Value
Meaning
0x00
0x80
0xFF
Write access without any security
Locked (1)
Write not authorized
1. The write password shall be sent before writing in the NDEF file.
The state 0xFF and 0xFE cannot be changed by using the Read or Write passwords.
3.2.2
Changing the read access right to NDEF files
The state diagram on Figure 10 shows how to change the access right to read an NDEF file.
Figure 10. Changing the read access right to an NDEF file
ϬdžϬϬ
>ŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞꢁ;ϭͿ
hŶůŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞꢁ;ϮͿ
WĞƌŵĂŶĞŶƚůLJꢁůŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞꢁ;ϯͿ
ϬdžϴϬꢁ;ϰͿ
Ϭdž&ꢄꢁ;ϰͿ
WĞƌŵĂŶĞŶƚůLJꢁƵŶůŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞ
D^ϯϬϳϳϮsϰ
1. See the procedure to lock the read access (Section 8.4: Locking an NDEF file).
2. See the procedure to unlock the read access (Section 8.5: Unlocking an NDEF file).
3. See the procedure to permanently lock the read access (Section 8.6: Reaching the read-only state for an
NDEF file).
4. Proprietary state, not defined by NFC Forum Type 4 Tag. For NFC Forum compatible tags, the only
possible value of the read access rights are 0x00 (no restrictions on reads).
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M24SR04 memory management
3.2.3
Changing the write access right to NDEF files
The state diagram on Figure 11 shows how to change the write access right to an NDEF file.
Figure 11. Changing the write access right to an NDEF file
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>ŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞꢁ;ϭͿ
hŶůŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞꢁ;ϮͿ
WĞƌŵĂŶĞŶƚůLJꢁůŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞꢁ;ϯͿ
ϬdžϴϬꢁ;ϰͿ
Ϭdž&&
WĞƌŵĂŶĞŶƚůLJꢁƵŶůŽĐŬꢁƚŚĞꢁEꢀꢄ&ꢁĨŝůĞ
D^ϯϬϳϳϯsϰ
1. See the procedure to lock the write access.
2. See the procedure to unlock the write access.
3. See the procedure to permanently lock the write access (Section 8.6: Reaching the read-only state for an
NDEF file).
4. Proprietary state, not defined by NFC Forum Type 4 Tag. For NFC Forum compatible tags, it is mandatory
that the write access rights are set to either 0x00 (no restrictions on writes) or 0xFF (permanently locked).
0x80 might not be fully decoded with some smart phones.
3.3
3.4
Access right life time
The access right life time is validated while the NDEF file is selected or until the end of the
RF or I²C session. Once the read or write access right is granted, the host can send one or
more ReadBinary or UpdateBinary commands.
At the end of a session or when the host selects another file, the read and write access
rights are initialized.
NDEF file passwords
The NDEF file passwords protect the read or write access from an RF or I²C interface
from/to an NDEF file.
Two NDEF file passwords are available for each NDEF file:
•
•
Read password
Write password
The length of a password is 128 bits (16 bytes).
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3.5
I2C password
The I²C password can be sent only by the I²C host. It activates the SuperUser rights. The I²C
host with the SuperUser rights can:
•
Access the NDEF file regardless of the right access and without sending the NDEF file
passwords.
•
Change the access rights regardless of the current state.
The length of the I²C password is 128 bits (16 bytes).
3.5.1
I²C password and I²C protect field of the System file
The I²C protect field in the system file can be set to:
•
•
0x00: the I²C host has the SuperUser right access without sending the I²C password
0x01: the I²C host has the SuperUser right access after sending the I²C password
For more details about the system file layout, refer to Section 3.1.4: System file layout.
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Communication mechanism
4
Communication mechanism
2
This chapter describes the principle of communication between an RF or an I C host and
the M24SR04 device.
4.1
Master and slave
2
The M24SR04 acts as a slave device on either the I C-bus or the RF channel and therefore
2
waits for a command from the I C master or the RF host before sending its response.
The RF host shall generate the RF field and the RF commands.
2
2
The I C host shall supply the M24SR04 through the V pin and shall generate the I C
CC
clock on the SCL pad.
4.2
M24SR04 session mechanism
2
The M24SR04 is a dynamic NFC/RFID tag which can be accessed either from the RF or I C
interface. The M24SR04 implements a token system. This token has two possible values,
2
2
RF or I C. When the token exists and is assigned to one interface (RF or I C), the M24SR04
cannot communicate with the other host.
4.2.1
4.2.2
RF token
The token is given to the RF interface once the anticollision is done. The release condition
can be either an RF field cut-off, or the reception of the command deselect, or when the I²C
host sends the KillRFsession.
2
I C token
2
2
The token is given to the I C interface when the I C host has sent the correct device Select.
The release condition can be either a power down condition on V pin or the reception of a
CC
2
2
I C token release sequence from the I C host, after which M24SR04 goes in Standby power
mode.
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5
I²C and RF command sets
The command sets of the M24SR04 can be split in different command families. Most
commands are common between the RF and the I²C interface. Some commands are
specific to the RF interface and some others are specific to the I²C interface. This section
describes the M24SR04 command sets that can be issued by the RF or the I²C host.
There are three command families:
•
•
•
the NFC Forum Type 4 Tag command set
the ISO/IEC 7816-4 command set
the proprietary command set
The NFC Forum Type 4 Tag command set and the ISO/IEC 7816-4 command set use the I-
Block format. For more details about the I-Block format, refer to Section 5.2: I-Block format.
Two other command formats exist:
•
•
the commands using the R-Block format
the commands using the S-Block format
For more details about these formats, refer to the corresponding sections: Section 5.3: R-
Block format and Section 5.4: S-Block format.
This section gives a brief description of the RF and I²C host common commands. The
format of these command sets is the I-Block format.
Table 14 lists the RF and I²C command sets.
Table 14. RF and I²C command sets
Family
command set
Class Instruction
Command name
Brief description
byte
code
NDEF Tag Application
Select
NDEF Tag Application Select
0x00
0xA4
CC select
0x00
0x00
0x00
0x00
0xA4
0xA4
0xA4
0xB0
Select the CC file
NDEF select
System select
ReadBinary
Select the NDEF file
Select the system file
Read data from file
NFC Forum
Type 4 Tag
Write or erase data to a
NDEF file
UpdateBinary
Verify
0x00
0x00
0x00
0xD6
0x20
Checks the right access of
a NDEF file or sends a
password
Change a Read or write
password
ChangeReferenceData
0x24
0x28
0x26
ISO/IEC 7816-4
Activate the password
security
EnableVerificationRequirement 0x00
DisableVerificationRequirement 0x00
Disable the password
security
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Table 14. RF and I²C command sets (continued)
Class Instruction
Family
command set
Command name
Brief description
byte
code
Enables the Read Only or
Write Only security state
ST Proprietary EnablePermanentState
ST Proprietary ExtendedReadBinary
0xA2
0xA2
0x28
0xB0
Read data from file
5.1
Structure of the command sets
The exchange of data between the RF or the I²C host and the M24SR04 uses three kinds of
data formats, called blocks:
•
•
•
I-Block: to exchange the command and the response
R-Block: to exchange positive or negative acknowledgment
S-Block: to use either the Deselect command or the Frame Waiting eXtension (WTX)
command or response
Note:
max WTX value = 0x0B
This section describes the structure of the I-Block, R-block and S-Block. This format is used
for the application command set.
5.2
I-Block format
The I-Block is used to exchange data between the RF or the I²C host and the M24SR04. It is
composed of three fields. Table 15 details the I-Block format.
Table 15. I-Block format
SoD
Payload
0
EoD
CRC
Name
PCB
DID
Length
1 byte
1 byte
1 to 251 bytes
2 bytes
PCB field
DID field (optional)
RF or I²C host to M24SR04: C-APDU
M24SR04 to RF or I²C host: R-APDU
2 CRC bytes
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Table 16. PCB field of the I-Block format
b7-b6
0b00
b5
0
b4
0
b3
X
b2
0
b1
1
b0
X
I-Block
RFU
Must be set to 0
DID field, if bit is set
Must be set to 0
Must be set to 1
Block number
When the RF or I²C host sends a command to the M24SR04 the format of the payload is the
C-APDU.
When the M24SR04 sends a command to the RF or I²C host, the format of the payload is
the R-APDU.
5.2.1
C-APDU: payload format of a command
The C-APDU format is used by the RF or the I²C host to send a command to the M24SR04.
Table 17 describes its format.
Table 17. C-APDU format
Payload field
Name
CLA
INS
P1
P2
LC
Data
Le
Length
1 byte
1 byte
1 byte
1 byte
1 byte
Lc byte
1 byte
Class byte
0x00: standard command
0xA2: ST command
Instruction byte
Param Byte 1
Param Byte 2
Number of bytes of the Data field
Data bytes
Number of bytes to be read in the M24SR04 memory
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5.2.2
R-APDU: payload format of a response
the M24SR04 uses the I-Block format to reply to a command which used the I-Block format.
This format is described in Table 18.
Table 18. R-APDU format
Payload field
Name
Data (optional)
Le byte
SW1
SW2
Length
1 byte
1 byte
Data
Status byte 1
Status byte 2
5.3
R-Block format
The R-Block is used to convey positive or negative acknowledgment between the RF or I²C
host and the M24SR04.
Table 19. R-Block format
PCB
CRC
R(ACK) without the DID field: 0xA2 or 0xA3
R(ACK) with the DID field: 0xAA or 0xAB
R(NAK) without the DID field: 0xB2 0xB3
R(NAK) with the DID field: 0xBA 0xBB
2 CRC bytes
There are two kinds of R-Blocks:
•
•
R(ACK): the acknowledgment block sent by the RF or I²C host or by the M24SR04.
R(NAK): the non-acknowledgment block sent by the RF or I²C host or by the
M24SR04.
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Table 20. R-Block detailed format
b7-b6
0b10
b5
1
b4
X
b3
X
b2
0
b1
0
b0
X
R-Block
RFU
0: NAK
1: ACK
0: DID field is not present
1: DID field is present
Must be set to 0
RFU
Block number
5.4
S-Block format
The S-Block is used to exchange control information between a reader and a contactless
tag.
Table 21. S-Block format
SoD
EoD
CRC
NFC frame
Length
PCB
DID
Payload
1 byte
1 byte
0 to 1 bytes
2 bytes
0xC2: for S(DES) when the DID field is not present
0xCA: for S(DES) when the DID field is present
0xF2: for S(WTX) when the DID field is not present
0xFA: for S(WTX) when the DID field is present
DID field (optional)
WTX field (1)
2 CRC bytes
1. This field is present when b5-b4 bits are set to 0b11 (S-Block is a WTX). see Table 22: S-Block detailed format.
There are two requests using the S-Block format:
•
•
•
S(DES): the deselect command
S(DES) is only applicable to RF
S(WTX): the Waiting Frame eXtension command or response.
2
A Waiting Time eXtension request occurs, in RF or I C, when the operating time
needed by M24SRxx is greater than 9.6 ms.
The WTX field indicates the increase time factor to be used in this command execution
(FDTtemp = WTX * 9.6 ms). The max WTX value is equal 0x0B.
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Table 22. S-Block detailed format
b7-b6
0b11
b5-b4
X
b3
X
b2
0
b1
1
b0
0
S-Block
0b00: Deselect
0b11: WTX
0: DID field is not present
1: DID field is present
-
RFU
RFU
Note:
After receiving the deselect command, the session is released and M24SR04 enters the
Standby power mode. In I C, the session is released after executing the I2C token release
2
sequence.
In response to a RATS command, M24SR04 returns FWI parameter (default frame waiting
time used); when M24SR04 needs more time for a command execution, it requests a frame
waiting time extension by responding 0xF2 0xWTX (Request waiting time = FWI * WTX). If
the reader accepts M24SR04 request, it acknowledges by sending the command 0xF2
0xWTX. The frame waiting time becomes FWI * WTX for the current command only.
5.5
CRC of the I2C and RF frame
The two CRC bytes check the data transmission between the RF host or I²C host and the
M24SR04. For the RF frame, the CRC is computed on all the data bits in the frame,
excluding parity bits, SOF and EOF, and the CRC itself.
For the I²C frames, the CRC is computed on all data bits of the frame excluding Device
select and the CRC itself.
The CRC is as defined in ISO/IEC 13239. The initial register content shall be 0x6363 and
the register content shall not be inverted after calculation.
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5.6
NFC Forum Type 4 Tag protocol
5.6.1
Commands set
With the NFC Forum Type 4 Tag protocol, the commands are common to RF and I²C.
Table 23. Command set overview
Command name
NDEF Tag Application Select
Brief description
Select the NDEF Tag Application
Select the capability container (CC) file using the
Select command
Capability Container Select
NDEF Select
System File Select
ReadBinary
Select the NDEF file
Select the system file
Read data from a file
Write new data to a file
UpdateBinary
5.6.2
Status and error codes
This section lists the status and the error code of the M24SR04.
Table 24. Status code of the M24SR04
SW1
SW2
Comment
Command completed
successfully
Value
0x90
0x00
Table 25. Error code of the M24SR04
SW1
SW2
Comment
Length
1 byte
1 byte
Value
0x62
0x80
File overflow (Le error)
End of file or record reached
before reading Le bytes
Value
Value
0x62
0x63
0x82
0x00
Password is required
Password is incorrect, X further
retries allowed (X can take
value 0,1, 2)
Value
0x63
0xCX
Value
Value
0x65
0x67
0x81
0x00
Unsuccessful updating
Wrong length
Cmd is incompatible with the
file structure
Value
0x69
0x81
Value
Value
0x69
0x69
0x82
0x84
Security status not satisfied
Reference data not usable
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Table 25. Error code of the M24SR04 (continued)
SW1
SW2
Comment
Length
1 byte
1 byte
Value
Value
Value
Value
Value
Value
0x6A
0x6A
0x6A
0x6A
0x6D
0x6E
0x80
0x82
0x84
0x86
0x00
0x00
Incorrect parameters Le or Lc
File or application not found
File overflow (Lc error)
Incorrect P1 or P2 values
INS field not supported
Class not supported
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5.6.3
NDEF Tag Application Select command
the RF or the I²C host shall send this command to activate the NDEF Tag Application.
To activate the NDEF Tag Application, the RF host sends the Select command (see
Table 26) in addition to the sequence defined in the NFC Forum digital protocol.
To activate the NDEF Tag Application, the I²C host sends the Select command (see
Table 26) in addition to the GetSession or the Kill RF session command.
Table 26 defines the C-APDU of the Select command to select the NDEF Tag Application
(called NDEF Tag Application Select).
Table 26. C-APDU of the NDEF Tag Application Select command
Name
Value
Class byte
CLA
INS
P1
P2
Lc
Data
Le
0xD27600
00850101
0x00
0xA4
0x04
0x00
0x07
0x00
Select instruction code
P1 field
P2 field
Number of bytes of data
Application ID
Le field
Table 27 defines the R-APDU of the NDEF Tag Application Select command.
Table 27. R-APDU of the NDEF Tag Application Select command
Data
SW1
SW2
Comment
Length
Value
Value
Value
-
-
-
-
1 byte
0x90
0x6A
0x6D
1 byte
0x00
0x82
0x00
-
Command completed
NDEF Tag Application not found
Class not supported
5.6.4
Capability Container Select command
The RF or I²C host uses the Capability Container Select procedure to select the capability
container (CC) file.
The CC file is selected when this command returns "command completed" in the R-APDU.
Table 28 defines the C-APDU of the Select command to select the CC file (called Capability
Container Select).
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Name
I²C and RF command sets
Table 28. C-APDU of the Capability Container Select command
CLA
INS
P1
P2
Lc
Data
Le
Value
0x00
0xA4
0x00
0x0C
0x02
0xE103
-
Class byte
Select instruction code
P1 field
P2 field
Number of bytes of data
CC file ID
-
Table 29 defines the R-APDU of the CC Select command.
Table 29. R-APDU of the Capability Container Select command
Data
SW1
SW2
Comment
Length
Value
Value
Value
-
-
-
-
1 byte
0x90
0x6A
0x6D
1 byte
0x00
0x82
0x00
-
Command completed
File or application not found
Class not supported
5.6.5
NDEF Select command
The RF or I²C host uses the NDEF Select command to select the NDEF file.
The NDEF file is selected when this command returns “command completed” in the R-
APDU. Table 30 defines the C-APDU of the Select command to select the NDEF file (called
NDEF Select).
In case of a password is required to access the NDEF file, the NDEF Select command will
disable any previously granted access rights to this file. The Verify command might be
required to access the file.
Table 30. C-APDU of the NDEF Select command
Name
Value
Class byte
CLA
INS
P1
P2
Lc
Data
Le
0x00
0xA4
0x00
0x0C
0x02
0x000X
-
Select instruction code
P1 field
P2 field
Number of bytes of data
0x0001: first NDEF file
-
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Table 31 defines the R-APDU of the NDEF Select command.
Table 31. R-APDU of the NDEF Select command
Data
SW1
1 byte
SW2
1 byte
Comment
Length
Value
Value
-
-
-
-
0x90
0x6A
0x00
0x82
Command completed
File or application not found
5.6.6
System File Select command
The RF or I²C host uses this command to select the system file.
The System file is selected when this command returns "command completed" in the R-
APDU.
Table 32 defines the C-APDU of the command to select the System file (called System
Select).
Table 32. C-APDU of the System File Select command
Name
CLA
INS
P1
P2
Lc
Data
Le
0x00
0xA4
0x00
0x0C
0x02
0xE101
-
Class byte
Select instruction code
P1 field
P2 field
Number of bytes of data
System file ID
-
Table 33 defines the R-APDU of the System File Select command.
Table 33. R-APDU of the System File Select command
Data
SW1
SW2
Comment
Length
Value
-
-
1 byte
0x90
1 byte
0x00
-
Command completed
Capability container not found, no data
is returned
Value
-
0x6A
0x82
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5.6.7
ReadBinary command
On receiving the ReadBinary command, the M24SR04 reads the requested memory field
and sends back its value in the R-APDU response.
Before sending a ReadBinary command, a file shall be selected by using a Select
command.
The Response of the ReadBinary command is successful when the data to be read is within
(1)
the selected file ; in other words, when the sum of P1-P2 and Le fields is equal to or lower
than the selected file length.
Table 34 defines the ReadBinary command.
Table 34. C-APDU of the ReadBinary command
Name
CLA
INS
P1 & P2
Lc
Data
Le
0x00
0xB0
2 bytes
-
-
1 byte
Class byte
Read instruction code
Offset in the file selected
-
-
Number of bytes to read between
0x01 ≤ Le ≤ max(Selected File length, 0xF6)
Table 35 defines the R-APDU of the ReadBinary command.
Table 35. R-APDU of the ReadBinary command
Data
SW1
SW2
Comment
Length
Value
Value
Value
Value
Value
-
1 byte
0x90
0x67
0x69
0x6A
0x6E
1 byte
-
Content read
Don’t care(1) Command completed
-
-
-
-
0x00
0x82
0x82
0x00
Wrong length
Security status not satisfied
File or application not found
Class not supported
1. For more information, please contact your local ST support.
1. For more details about CC file, refer to Section 3.1.2: CC file layout.
For more details about NDEF file, refer to Section 3.1.3: NDEF file layout.
For more details about System file, refer to Section 3.1.4: System file layout.
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5.6.8
UpdateBinary command
On receiving the UpdateBinary command, the M24SR04 writes the data field into the
selected file and sends back a status in the R-APDU response. If needed, M24SRxx will
request a timing extension (see Section 5.4).
Before sending an UpdateBinary command, a file shall be selected by issuing a Select
command.
Table 36 defines the UpdateBinary command.
Table 36. C-APDU of the UpdateBinary command
Name
CLA
INS
P1 & P2
Lc
Data
Le
0x00
0xD6
2 bytes
1 byte
Lc bytes
-
Class byte
Write instruction code
Offset in the file selected
Number of bytes of data (0x01 ≤Lc ≤0xF6)
Data to write in the M24SR04 memory
-
Table 37 defines the R-APDU of the UpdateBinary command.
Table 37. R-APDU of the UpdateBinary command
Data
SW1
SW2
Comment
Length
Value
Value
Value
Value
Value
Value
-
-
-
-
-
-
-
1 byte
0x90
0x65
0x67
0x69
0x6A
0x6E
1 byte
0x00
0x81
0x00
0x82
0x82
0x00
-
Command completed
Unsuccessful updating
Wrong length
Security status not satisfied
File or application not found
Class not supported
Note:
Chaining is not supported on “UpdateBinay” command.
For further return codes and definitions, refer to Status and error codes.
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5.7
ISO/IEC 7816-4 commands
The ISO/IEC 7816-4 command set offers some extended features such as the protection of
the NDEF file. This command set is used to manage the right access of the NDEF file.
5.7.1
Verify command
The Verify command has two functions:
1. Check if a password is required to access to the NDEF file (the LC field = 0x00).
2. Check that the password embedded in the Verify command allows the access to the
memory (the Lc field = 0x10 and the password is present).
When the Lc field if equal to 0x00, the verify command returns a success code (0x90 00)
provided that the access to the NDEF file does not require a password. When the access to
the NDEF file is protected, the response to the Verify command returns an error code
(0x63 00).
When the Lc field equals 0x10, on receiving the Verify command, the M24SR04 compares
the requested password with the data contained in the request and reports whether the
operation has been successful in the response.
Before sending this command, an NDEF file shall be selected by issuing the NDEF Select
command. Thus, this command checks the right access condition of the last NDEF file
selected.
After a successful command, an access is granted for the whole NDEF file.
Table 38 defines the Verify command.
Table 38. Verify command format
Name
CLA
INS
P1 & P2
Lc
Data
Le
0x00
0x20
2 bytes
1 byte
Lc bytes
-
Class byte
Instruction code
Password identification
0x0001: Read NDEF password transmit
0x0002: Write NDEF password transmit
0x0003: I²C password transmit (1)
Other: RFU
0x00: the password is not present
0x10: the password is present in the data field
Password
-
1. This code can only be issued by the I²C host.
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Table 39 defines the R-APDU of the Verify command.
Table 39. R-APDU of the Verify command
SW1 SW2 Comment
1 byte 1 byte
Data
Length
Value
-
-
-
0x90
0x69
0x00
0x85
Command completed, the password is correct
The conditions of use are not satisfied (e.g. no
NDEF file was selected)
Value
-
Value
Value
Value
Value
-
-
-
-
0x69
0x69
0x6A
0x63
0x81
0x82
0x80
0x00
Cmd incompatible with file structure
Security status not satisfied
Incorrect parameter in cmd data field
A password is required
The password transmitted is incorrect and X
encodes the number of further allowed retries.
Value
Value
-
-
0x63
0x6E
0xCX (1)
0x00
Class not supported
1. At each session, the RF or I2C host can check a password 3 times.
5.7.2
Change Reference Data command
The Change Reference Data command replaces the read or write password related to the
NDEF files previously selected. It can be performed only if the security status satisfies the
security attributes for this command.
Before sending this command, the verify command with the correct NDEF write password
shall be issued. Thus, this command changes the reference data of the NDEF file.
Table 40 defines the Change Reference Data command.
Table 40. Change reference data command format
Name
CLA
INS
P1 & P2
Lc
Data
Le
0x00
0x24
2 bytes
1 byte
Lc bytes
-
Class byte
Instruction code
Password identification
0x0001: Read password transmit
0x0002: Write password transmit
0x0003: I²C password transmit (1)
Other: RFU
0x10: the password is present in the data field
NDEF file or I²C Password
-
1. This code can only be issued by the I²C host.
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Table 41 defines the R-APDU of the Change Reference Data command.
Table 41. R-APDU of the Change Reference Data command
Data
SW1
SW2
Comment
Length
Value
0
1 byte
1 byte
-
Command completed, the access right has
been changed
-
-
0x90
0x69
0x00
0x81
Cmd is incompatible with the
file structure
Value
Value
Value
Value
Value
Value
Value
-
-
-
-
-
-
0x65
0x69
0x6A
0x6A
0x6A
0x6E
0x81
0x82
0x80
0x82
0x86
0x00
Unsuccessful updating
Security status not satisfied
CC file or System file selected
File or application not found
Incorrect P1 or P2 values
Class not supported
5.7.3
Enable Verification Requirement command
The Enable Verification Requirement command activates the protection by password of the
NDEF file. When this command is successful, the read or write access to the NDEF file is
protected by a 128-bit password. It can be performed only if the security status satisfies the
security attributes for this command.
This command can update the right access of the NDEF file by writing into the EEPROM. In
this case, the response timing will be around 5 ms.
Before sending this command, the verify command with the correct NDEF write password
shall be issued. Thus, this command changes the access right of the NDEF file.
Table 42 defines the Enable Verification requirement command.
Table 42. Enable Verification Requirement command format
Name
CLA
INS
P1 & P2
Lc
Data
Le
0x00
0x28
2 bytes
-
-
-
Class byte
Instruction code
New security attributes
0x0001: Enable the read protection of the NDEF file
0x0002: Enable the write protection of the NDEF file
Other: RFU
-
-
-
The last five bits identify the password sent in the Verify command.
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Table 43 defines the R-APDU of the Enable Verification Requirement command.
Table 43. R-APDU of the Enable Verification Requirement command
Data
SW1
SW2
Comment
Length
Value
0
1 byte
1 byte
-
Command completed, the password is
correct
-
0x90
0x00
Value
Value
Value
Value
Value
-
-
-
-
-
0x69
0x69
0x6A
0x6A
0x6A
0x81
0x82
0x80
0x82
0x86
Cmd is incompatible with the file structure
Security status not satisfied
CC file or System file selected
File or application not found
Incorrect P1 or P2 values
5.7.4
Disable Verification Requirement command
The Disable Requirement command deactivates the protection by password of the NDEF
file. When this command is successful, the read or write access to the NDEF file is granted
without security requirements. It can be performed only if the security status satisfies the
security attributes for this command.
Before sending this command, the verify command with the correct NDEF write password
shall be issued. Thus, this command changes the access right of the NDEF file.
This command can update the right access of the NDEF file by writing into the EEPROM. In
this case, the response timing will be around 6 ms.
Table 44 defines the Disable Verification Requirement command.
Table 44. Disable Verification Requirement command format
Name
CLA
INS
P1 & P2
Lc
Data
Le
0x00
0x26
2 bytes
-
-
-
Class byte
Instruction code
New security attributes
0x0001: Disable the read protection of the NDEF file
0x0002: Disable the write protection of the NDEF file
Other: RFU
-
-
-
Table 45 defines the R-APDU of the Disable Verification Requirement command.
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Table 45. R-APDU of the Disable Verification Requirement command
Data
SW1
SW2
Comment
Length
Value
Value
Value
Value
Value
Value
Value
Value
0
-
-
-
-
-
-
-
-
1 byte
0x90
0x69
0x69
0x6A
0x6A
0x6A
0x6E
0x65
1 byte
0x00
0x81
0x82
0x80
0x82
0x86
0x00
0x81
-
Command completed, the password is correct
Cmd is incompatible with the file structure
Security status not satisfied
CC file or System file selected
File or application not found
Incorrect P1 or P2 values
Class not supported
Update failed
5.8
ST Proprietary command set
The RF or I²C host can be issued with the command set described in this chapter.
5.8.1
ExtendedReadBinary command
On receiving the ExtendedReadBinary command, the M24SR04 reads the requested
memory field and sends back its value in the R-APDU response.
Before sending an ExtendedReadBinary command, a file shall be selected by issuing an
NDEF select command.
The response of the ExtendedReadBinary command will be successful even if the data to
be read is beyond the NDEF message. The command returns an error code if the data to be
read goes beyond the end of the file.
Table 46. C-APDU of the ExtendedReadBinary command
Name
Length
ST Class byte
CLA
INS
P1 & P2
Lc
Data
Le
0xA2
0xB0
2 bytes
-
-
1 byte
Read instruction code
Offset in the file selected
-
-
-
Number of bytes to read between 0x01 ≤ Le ≤ 0xF6
Table 47 defines the R-APDU of the read binary command.
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Table 47. R-APDU of the ExtendedReadBinary command
Data
SW1
SW2
comment
Length
Value
Value
Value
Value
Value
Value
Le bytes
1 byte
0x90
0x67
0x69
0x6A
0x6A
0x6E
1 byte
-
Content read
Don’t care(1)
0x00
Command completed
Wrong length
-
-
-
-
-
0x82
Security status not satisfied
File or application not found
Incorrect P1 or P2 values
Class not supported
0x82
0x86
0x00
1. For more information, please contact your local ST support.
5.8.2
EnablePermanentState command
The command configures the NDEF file to the ReadOnly or to the WriteOnly State.
This command can update the right access to the NDEF file by writing into the EEPROM. In
this case, the response timing will be around 6 ms.
Table 48 defines the EnablePermanentState requirement command.
Table 48. EnablePermanentState command format
Name
Length
CLA
INS
P1 & P2
Lc
Data
Le
0xA2
0x28
2 bytes
-
-
-
Class byte
Instruction code
New security attributes
0x0001: Enable the read protection of the NDEF file
0x0002: Enable the write protection of the NDEF file
Other: RFU
-
-
-
-
Table 49 defines the R-APDU of the EnablePermanentState command.
Table 49. R-APDU table of the EnablePermanentState command
Data
SW1
SW2
comment
Length
Value
Value
Value
-
-
-
-
1 byte
0x90
0x65
0x67
1 byte
0x00
0x81
0x00
-
Command completed
Update failed
Wrong length
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Table 49. R-APDU table of the EnablePermanentState command (continued)
Data
SW1
SW2
comment
Value
Value
Value
Value
Value
-
-
-
-
-
0x69
0x6A
0x6A
0x6A
0x6E
0x82
0x80
0x82
0x86
0x00
Security status not satisfied
CC file or System file selected
File or application not found
Incorrect P1 or P2 values
Class not supported
5.8.3
DisablePermanentState command
The command configures the NDEF file to the Lock state.
This command can update the right access of the NDEF file by writing into the EEPROM. In
2
this case, the response timing will be around 6 ms. This command is only valid in I C. The
SuperUser rights must have been granted to execute the command.
Before sending this command, an NDEF file shall be selected by issuing the NDEF Select
command.
Table 50 defines the DisablePermanentState requirement command.
Table 50. DisablePermanentState command format
Name
Length
CLA
INS
P1 & P2
Lc
Data
Le
0xA2
0x26
2 bytes
-
-
-
Class byte
Instruction code
New security attributes
0x0001: Disable the read protection of the NDEF file
0x0002: Disable the write protection of the NDEF file
Other: RFU
-
-
-
Table 51 defines the R-APDU of the DisablePermanentState command.
Table 51. R-APDU of the DisablePermanentState command
Data
SW1
SW2
comment
Length
Value
Value
Value
Value
-
-
-
-
-
1 byte
0x90
0x65
0x67
0x69
1 byte
0x00
0x81
0x00
0x82
-
Command completed
Update failed
Wrong length
Security status not satisfied
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Table 51. R-APDU of the DisablePermanentState command (continued)
Data
SW1
SW2
comment
Value
Value
Value
Value
-
-
-
-
0x6A
0x6A
0x6A
0x6E
0x80
0x82
0x86
0x00
CC file or System file selected
File or application not found
Incorrect P1 or P2 values
Class not supported
5.8.4
UpdateFileType command
This command allows to modify the file type of a selected file to Proprietary file (0x05) or
NDEF file (0x04).
NFC Forum compatible tags must configure the file as NDEF file (0x04).
This command is granted only, when application and file are selected and if the file length
and access right have previously been set to 0X00h (message invalid, all access rights
granted).
This command will update the file type located in the CC file by writing into the EEPROM. In
this case, the response timing will be around 6 ms.
Table 52 defines the UpdateFileType command.
Table 52. UpdateFileType command format
Name
Value
Class byte
CLA
INS
P1
P2
Lc
Data
Le
0x04 or
0x05
0xA2
0xD6
0x00
0x00
0x01
-
Select instruction code
P1 field
P2 field
Number of bytes of data
File type
-
Table 53 describes the R-APDU of the UpdateFileType command.
Table 53. R-APDU of the UpdateFileType command
Data
SW1
SW2
Comment
Length
Value
Value
Value
-
-
-
-
1 byte
0x90
0x69
0x6A
1 byte
0x00
0x82
0x80
-
Command completed
Security status not satisfied
CC file or System file selected
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Table 53. R-APDU of the UpdateFileType command (continued)
Data
SW1
SW2
Comment
File or application not found
Incorrect P1 or P2 values
Value
Value
-
-
0x6A
0x6A
0x82
0x86
5.8.5
SendInterrupt command
On receiving the SendInterrupt command, the M24SR04 generates a negative pulse on the
GPO pin. It starts at the end of the command and ends at the end of the RF response.
Before sending this command, the system file shall be selected by issuing the System
Select command.
Table 54 defines the SendInterrupt command.
Table 54. SendInterrupt command format
CLA
INS
P1&P2
Lc
Data
Le
Length
Value
1 byte
0xA2
1 byte
0xD6
2 bytes
0x001E
1 byte
0x00
-
-
-
-
Table 55 describes the R-APDU of the SendInterrupt command.
Table 55. R-APDU of the SendInterrupt command
Data
SW1
SW2
Comment
Length
Value
Value
Value
Value
Value
-
-
-
-
-
-
1 byte
0x90
0x6A
0x6A
0x6A
0x6E
1 byte
0x00
0x80
0x82
0x86
0x00
-
The interrupt has been sent
The GPO is not configured as an interrupt mode
File or application not found
Incorrect P1 or P2 values
Class not supported
5.8.6
StateControl command
On receiving the StateControl command with reset value: data 0x00, the M24SR04 drives
the GPO pin low. On receiving the StateControl command with set value: data 0x01, the
M24SR04 releases the GPO pin which returns to HZ.
Before sending this command, the system file shall be selected by issuing the System
Select command.
Table 56 defines the State Control command.
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Table 56. StateControl command format
CLA
INS
P1&P2
Lc
Data
Le
Length
1 byte
0xA2
0xA2
1 byte
0xD6
0xD6
2 bytes
0x001F
0x001F
1 byte
0x01
0x01
-
-
-
-
Reset value
Set value
0x00
0x01
Table 57. R-APDU of the StateControl command
Data
SW1
SW2
Comment
Length
Value
Value
Value
Value
Value
-
-
-
-
-
-
1 byte
0x90
0x6A
0x6A
0x6A
0x6E
1 byte
0x00
0x80
0x82
0x86
0x00
-
The set or reset has been sent
The GPO is not configured in StateControl mode
File or application not found
Incorrect P1 or P2 values
Class not supported
5.9
Specific RF command set
This section describes the command set that can be issued only by the RF host.
5.9.1
Anticollision command set
Table 58 lists the commands that can be issued only by the RF host. The format of these
commands is described in the NFC Forum Digital Protocol specification.
Table 58. Commands issues by the RF host
Family command set
Command name
Instruction code
0x52 (1)
ALL_REQ
SENS_REQ
SDD_REQ
SEL_REQ
SLP_REQ
0x26 (1)
NFC-A technology
1. Code on 7 bits.
0x93 or 0x95 or 0x97
0x93 or 0x95 or 0x97
0x50
5.9.2
RATS command and ATS response
RATS command and ATS response are used for NFC Forum Type 4A Tag Platform Device
Activation (as defined in NFC Forum Digital Protocol specification).
Table 59 details the RATS command. This command shall be sent after the anticollision
process.
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Table 59. RATS command
Param
Name
Byte field
Bit field
INS
CRC
0xE0
1 byte
b7-b4
2 bytes
b3-b0
Instruction code
FSDI
DID (0 ≤ DID ≤ 14)
2 CRC bytes
The FSDI field codes the FSD that defines the maximum size that an RF or I²C host is able
to receive. Table 60 gives the conversion from FDSI to FSD.
Table 60. Conversion from FDSI to FSD
0x9h-
FSDI
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0xF
0xE
FSD
16
24
32
40
48
64
96
128
256
RFU
256
The DID field defines the value of the addressed M24SR04.
Table 61. ATS response
Name
Byte field
Bit field
TL
T0
TA(1)
TB(1)
TC(1)
0x02
CRC
0x05
0x78
1 byte
1 byte
2 bytes
b8-b5
b4-b1
Length of the ATS
response
FSCI = 256 bytes
The maximum ascending data rate is 106 kbps
The maximum descending data rate is 106 kbps
FWI field (9.6 ms when TB = 0x50)
SFGI field (302 µs when TB = 0x50)
The DID is supported
2 CRC bytes
The FSCI codes the FSC which stands for the maximum frame size that the M24SR04 is
able to receive. The M24SR04 is able to receive up to 256 bytes of command. If the RF or
I²C host sends a command with more than 256 bytes, the M24SR04 will not be able to treat
the command and will not reply.
The FWI which stands for the Frame Waiting time Integer codes the FWT. This time
corresponds to the maximum duration while an RF or I²C host shall send before sending the
next command.
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The SFGI which stands for the Start-up Frame Guard Time is the minimum time that the
reader shall wait after receiving the response of the M24SR04.
5.9.3
PPS command & response
PPS (Protocol and Parameter Selection) command and response are defined in ISO/IEC
14443-4, in the Protocol Activation of PICC Type A.
The PPS command allows to change the data rates of the ascending (RF host to M24SR04)
and descending (M24SR04 to RF host) data rates.
Table 62. PPS command
Name
Byte field
Bit field
INS
PPS0
0x11
PPS1
1 byte
b3-b2
CRC
-
0xDX
2 bytes
b7-b4
b3-b0
0b0000
b1-b0
Instruction code
DID
INS
PPS1 is present
RFU
PPS1 Descending data rate
Ascending data rate
2 CRC bytes
The ascending and descending data rates shall be coded as described in Table 63.
Table 63. Ascending and descending data rate coding
Value
Data rate
0b00
0b01
0b10
0b11
106 kbps
RFU
RFU
RFU
When the M24SR04 is able to change both data rates, it returns the following response. The
data rate of this response is 106 kbps; then, the M24SR04 changes the ascending and
descending data rates.
Table 64 gives the details of the PPS response.
Table 64. PPS response
Name
Byte field
Bit field
INS
-
-
PPS0
0x11
0xDX
b8-b5
b4-b1
Response code
DID field
2 CRC bytes
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5.10
Specific I²C command set
Table 65 lists the commands that can only be issued by the I²C host.
Table 65. Specific I²C commands
Instruction
Command name
Format
Class byte
Brief description
code
Open an I²C session when the
RF session is not ongoing
GetI2Csession
KillRFsession
-
-
-
-
0x26
Kill the RF session and open an
I²C session
0x52
5.10.1
GetI2Csession command
The GetI2Csession command opens an I²C session if an RF session is not ongoing.
Table 66 defines the GetI2Csession command.
Table 66. GetI2Csession command format
INS
Length
Value
1 byte
0x26
The GetI2Csession command does not create a reply.
When an RF session is ongoing, the M24SRxx will not acknowledge the command.
When no RF session is ongoing, the M24SRxx will acknowledge the command and open an
I²C session.
5.10.2
KillRFsession command
The KillRF session command closes the RF session and opens an I²C session.
Table 67 defines the KillRFsession command.
Table 67. KillRFsession command format
INS
Length
Value
1 byte
0x52
The KillRFsession command does not create a reply. The RF session is closed when the
device acknowledges the command.
Caution:
A successful completion of the RF command is not certain.
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6
RF device operation
6.1
Anticollision and Device Activation command set for the RF
interface
The M24SR04 device supports the command set defined in the NFC-A Technology and the
Type 4A Tag Platform chapters of the NFC Digital Protocol V1.0 specification.
6.2
Open an RFsession
Once the RF host has terminated the anticollision procedure and retrieve the ATS response,
it shall send the SelectApplication command. The M24SR04 will open an RF session. At this
point, the RF host can send the applicative command set and the I²C cannot communicate
2
with the M24SR04 without closing first the RF session using the I C KillRFsession
command.
6.3
6.4
Close an RFsession
The RF host can close the RF session by issuing one of these methods:
•
•
send an S(DES) command
turn off the RF field
Applicative command set
The applicative command set is composed of the following command sets:
•
•
•
the NFC Forum Type 4 Tag command set
the ISO/IEC 7816-4 command set
the proprietary command set
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2
7
I C device operation
2
The M24SR04 device supports the I C protocol. The device that controls the data transfer is
known as the bus master, and the other one as the slave device. A data transfer can only be
initiated by the bus master, which also provides the serial clock for synchronization. The
M24SR04 device is a slave in all communications.
7.1
I2C communication protocol
2
2
The I C communication is built on a system of command and reply exchange. The I C host
starts the communication by sending a request. Once a valid request is received by the
M24SR04 device, it carries out an internal operation and creates its answer.
As defined in this document, and except for the GetI2C session and Kill RF session
commands, the definition of a valid request is a command with a right CRC value.
Figure 12 shows an exchange of a command and a response between the I²C host and the
M24SR04. Once the I²C session is open, the I²C host can send a command. The command
is composed of:
•
•
a Device Select field with the R/W bit set to 0.
the command field.
The M24SR04 acknowledges on the reception of each byte.
Once the M24SR04 is ready to send the answer, the I²C host shall:
•
•
send a Device Select field with the R/W bit set to 1.
release the SDA line and send an SCL clock.
The I²C host shall acknowledge on the reception of each byte.
Figure 12. Command and response exchange
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S is the I C Start bit sequence
P is the I C Stop bit sequence
R/W is the 8 bit of Device Select.
2
th
Note:
A restart during a command and response exchange is not supported by the M24SR04.
2
After a command, the I C host can execute a Polling sequence to determine when the
response is available.
Polling sequence: Loop on < START (S) + DeviceSelect with RW=0 + read NACK/ACK
+ STOP (P) >
The response is available as soon as the M24SR04 sends an ACK ( host read will a
'0').
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7.2
Start condition
A Start condition is identified by a falling edge of serial data (SDA) while the serial clock
(SCL) is stable in the high state. A Start condition must precede any data transfer command.
The device continuously monitors (except during an instruction processing) the SDA and the
SCL for a Start condition, and does not respond unless one is given.
7.3
7.4
Stop condition
A Stop condition is identified by a rising edge of serial data (SDA) while the serial clock
(SCL) is stable and driven high. A Stop condition terminates a command between the device
and the bus master.
I²C token release sequence
As explained in the M24SR04-Y M24SR04-G session mechanism, the I²C communication is
reserved to the I²C host when the session token has the I²C value.
The following sequence explains how to release the I²C value of the session token.
I²C communication with the M24SR04 starts with a valid Start condition, followed by a
device select code.
If the delay between the Start condition and the following rising edge of the Serial Clock
(SCL) that samples the most significant of the Device Select exceeds the t
START_OUT_MAX
time (see Table 78), the I²C logic block is reset and further incoming data transfer is ignored
until the next valid Start condition.
Figure 13. I²C token release sequence
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If the above delay is below t
unmodified.
(see Table 78), I C session token stays
START_OUT_min
2
If the delay is between t
and t
, I C session token might or not
START_OUT_min
START_OUT_max
be released. This range of delay is not authorized for safe operation.
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7.5
I²C timeout on clock period
2
During a data transfer on the I C bus, if the serial clock high pulse or serial clock low pulse
2
exceeds t
value that is the maximum value specified in Table 78, the I C logic
CL_RESET
block is reset and any further incoming data transfer is ignored until the next valid Start
condition.
If the serial clock high pulse is under the maximum value of tCHCL and the serial clock low
2
pulse is under the maximum value of t
in Table 78, the I C logic block is not reset.
CLCH
For proper operation, the serial clock high pulse should not be higher than tCHCL and lesser
than t , and the serial clock low pulse should not be higher than tCHCH and lesser
CL_RESET
t
.
CL_RESET
7.6
Acknowledge bit (ACK)
The acknowledge bit is used to indicate a successful byte transfer. The bus transmitter,
whether a bus master or a slave device, releases the serial data (SDA) after sending eight
bits of data. During the 9th clock pulse period, the receiver pulls the SDA low to
acknowledge the receipt of the eight data bits.
7.7
7.8
Data input
During data input, the device samples serial data (SDA) on the rising edge of the serial clock
(SCL). For a correct device operation, the SDA must be stable during the rising edge of the
SCL, and the SDA signal must change only when the SCL is driven low.
I²C device address
2
The device address is the concatenation of the group number coded on 4 bits and the I C
address coded on 3 bits, as shown in Table 68.
2
Table 68. I C device address format
b7-b4
b3
1
b2
1
b1
0
b0
0b1010
0bx
Group number
E2 bit
E1 bit
E0 bit
0 = Request
1 = Answer
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I2C device operation
M24SR04-Y M24SR04-G
7.9
I²C frame format
2
The I C frame is composed of three fields:
1. SOD field: contains the device select and the PCB. The PCB field is detailed in
Section 5.2.
2
2. Payload field: contains the command and its parameter, as defined in the I C command
set.
3. EOD field: contains the two CRC bytes computed on the SOD but excluding the device
select byte field.
2
Table 69 shows the format of an I C frame.
2
Table 69. I C frame format
I2C frame
SOD
Payload
EOD
0xAC or 0xAD
1 byte
1 to 251 bytes
2 bytes
Device select
0xAC: to send a request to the M24SR04
0xAD: to read a response of the M24SR04
PCB field
I2C command or I2C answer
2 CRC bytes
7.9.1
Example of I²C frame commands
NDEF Tag Application command
2
2
This example presents the I C frame of an NDEF Tag Application Select command. The I C
frame is detailed in Table 70.
2
Table 70. I C host to M24SR04
Field
SOD
Payload
EOD
Value
0xAC
0x02 or 0x03
Command field
35 C0 or DF BE
Device select
PCB field
0x00 A4 04 00 07 D2 76 00 00 85 01 01 00
2 CRC bytes
2
2
Before sending a new command, the I C host can send an I C frame to read the M24SR04
answer to the NDEF tag Application Select command.
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M24SR04-Y M24SR04-G
Field
I2C device operation
EOD
2
Table 71. M24SR04 to I C host
SOD
Payload
I2C host to
M24SR04
M24SR04 to I2C host
0x90 00
Value
0xAD
0x02 or 0x03
F1 09 or 2D 53
Device select
PCB field
I2C command
2 CRC bytes
2
Figure 14 shows the I C frame of the NDEF tag Application Select command.
Figure 14. NDEF tag Application Select command
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I2C device operation
M24SR04-Y M24SR04-G
7.10
Open an I²C session
To open an I²C session, the I²C host shall send either the GetSession command or the
KillRFsession command. The GetSession Command opens an I²C session if an RF session
in not currently opened.
A KillRFsession command closes the current RF session if it exist and opens an I²C
session.
When an I²C session is opened, the RF host cannot communicate with the M24SR04 and
cannot close the I²C session.
7.11
Close the I²C session
There are three ways to close an I²C session:
•
•
•
•
turn off the Vcc power supply
send the I2C token release sequence
wait for the I²C watchdog when it is enabled
wait for the I²C timeout on clock period
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Functional procedures
8
Functional procedures
This section describes some procedure to access the memory or manage its protection.
8.1
Selection of an NDEF message
The RF or I²C host shall use this procedure to detect the NDEF message inside an
M24SR04.
The NDEF detection procedure is as follows:
1. Open an RF or an I²C session
2. Send the SelectNDEFTagApplication command
3. Select the CC file
4. Read the CC file
5. Select the NDEF file.
8.2
Reading of an NDEF message
The RF or I²C host executes the NDEF read procedure to read the NDEF file.
1. Detect successfully the NDEF file using the NDEF detection procedure
2. Check that the read access without any security is granted for the NDEF file from the
information provided by the CC file
3. Select the NDEF file
4. Read the NDEF file.
Note:
Reading the NDEF file should not go beyond the NDEF Length field (NLEN), which
indicates the size of the NDEF message stored in the NDEF file.
8.3
Reading a locked NDEF file
The RF or I²C host executes this procedure to read an NDEF file which has been locked
previously.
1. Select the NDEF Tag Application
2. Select the NDEF file
3. Verify the Read password by using the Verify command
4. Read the data in the NDEF file.
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Functional procedures
M24SR04-Y M24SR04-G
8.4
Locking an NDEF file
The RF or I²C host executes this procedure to protect an NDEF file.
1. Select the NDEF Tag Application
2. Check the right access provided by the CC file
3. Select the NDEF file
4. Transmit the NDEF file Write password by using the Verify command
5. Lock the NDEF file by sending the Enable verification command.
8.5
8.6
Unlocking an NDEF file
The RF or I²C host executes this procedure to unlock an NDEF file which has been locked
previously.
1. Select the NDEF Tag Application
2. Select the NDEF file
3. Verify the NDEF file Write password or the I²C password by using the Verify command
4. Unlock the NDEF file by sending the Disable verification command.
Reaching the read-only state for an NDEF file
The RF or I²C host executes this procedure to reach the read-only state for an NDEF file.
1. Select the NDEF Tag Application
2. Select the NDEF file
3. Transmit the NDEF file Write password or the I²C password by using the Verify
command
4. Send an EnablePermanentState command as the Write access right of the previous
Select NDEF file.
8.7
Changing an NDEF password procedure
The RF or I²C host could use this procedure to change one NDEF password. it can be a
Read or Write password.
1. Select the NDEF Tag Application
2. Select the NDEF file
3. Transmit the NDEF file Write password or the I²C password by using the Verify
command
4. Change the password by sending a ChangeReferenceData command.
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Functional procedures
8.8
Changing a File type Procedure
The RF or I²C host executes this procedure to change the File Type of a file for which all
access rights were previously granted.
1. Select the NDEF Tag Application
2. Select the File to be modified
3. Set the File Length to 0x00 using the UpdateBinary command
4. Send an UpdateFileType command with the New file Type as data.
8.9
Updating a NDEF file
When there's enough space in the file to update it with new content, the following steps
should be followed to update the NDEF message:
1. Select the NDEF Tag Application
2. Select the NDEF file
3. Unlock the NDEF file if necessary
4. Write the NDEF length to 0x0000 with the Update Binary command.
5. Write the NDEF message in the NDEF message field using one or more Update Binary
commands.
6. Write the NDEF length of the NDEF message using the Update Update command.
It is recommended the NDEF length is read back and checked against the desired value to
ensure the Update sequence has been correctly performed.
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UID: Unique identifier
M24SR04-Y M24SR04-G
9
UID: Unique identifier
The M24SR04 is uniquely identified by a 7 bytes unique identifier (UID). The UID is a read-
only code and comprises:
•
•
•
The IC manufacturer code on 1 byte (0x02 for STMicroelectronics).
The Product code on 1 byte.
A device number on 5 bytes.
Table 72 describes the UID format.
Table 72. UID format
0x02
0x86 or 0x8E(1)
5 bytes
IC manufacturer code
M24SR04 product code
Device number
1. Automative grade
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Maximum ratings
10
Maximum ratings
Stressing the device above the ratings listed in Table 73 may cause permanent damage to
the device. These are stress ratings only and operation of the device at these or any other
conditions above those indicated in the operating sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect the device
reliability.
Table 73. Absolute maximum ratings
Symbol
Parameter
Min.
Max.
Unit
Ambient operating temperature
for grade 6
- 40
85
TA
°C
Ambient operating temperature
for grade 5
- 25
85
UFDFPN8,
SO8, TSSOP8
Storage temperature
Storage temperature
- 65
15
150
25
°C
°C
Sawn Bumped
Wafer (kept in
its antistatic
bag)
TSTG
Storage time
-
9
months
°C
Lead temperature
during soldering
UFDFPN8,
SO8, TSSOP8
TLEAD
VIO
see note (1)
I2C input or output range and GPO
RF supply current AC0 - AC1
RF input voltage
- 0.50
-
6.5
V
(2)
ICC
100
mA
amplitude between
AC0 and AC1, GND
(2)
VMAX_1
VAC0-VAC1
-
10
V
pad left floating
AC voltage between
VAC0-GND or
(2)
VMAX_2
AC0 and GND, or AC1
VAC1-GND
- 0.5
4.5
V
V
V
and GND
Electrostatic discharge
VESD
voltage (human body
AC0-AC1
-
-
1000
3500
model) (3)
Electrostatic discharge
voltage (human body
model) (3)
VESD
Other pads
1. Compliant with JEDEC Std J-STD-020D (for small body, Sn-Pb or Pb assembly), the ST ECOPACK®
7191395 specification, and the European directive on Restrictions on Hazardous Substances (ROHS
directive 2011/65/EU, July 2011).
2. Based on characterization, not tested in production. Maximum absorbed power = 100 mW @ 7.5 A/m
3. AEC-Q100-002 (compliant with JEDEC Std JESD22-A114A, C1 = 100 pF, R1 = 1500 Ω, R2 = 500 Ω)
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I2C DC and AC parameters
M24SR04-Y M24SR04-G
2
11
I C DC and AC parameters
This section summarizes the operating and measurement conditions, and the DC and AC
2
characteristics of the device in I C mode. The parameters in the DC and AC characteristic
tables that follow are derived from tests performed under the measurement conditions
summarized in the relevant tables. Designers should check that the operating conditions in
their circuit match the measurement conditions when relying on the quoted parameters.
2
Table 74. I C operating conditions
Symbol
Parameter
Supply voltage range Y
Min.
Max.
Unit
2.7
2.4
–40
-25
5.5
5.5
85
VCC
V
Supply voltage range G
Ambient operating temperature for grade 6
Ambient operating temperature for grade 5
TA
°C
85
Table 75. AC test measurement conditions
Symbol
Parameter
Min.
Max.
Unit
CL
Load capacitance
100
pF
ns
V
tr, tf
Input rise and fall times
Input levels
-
50
Vhi-lo
Vref(t)
0.2 VCC to 0.8 VCC
0.3 VCC to 0.7 VCC
Input and output timing reference levels
V
Figure 15. AC test measurement I/O waveform
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Table 76. Input parameters
Symbol
Parameter
Input capacitance (SDA)
Min.
Max.
Unit
CIN
CIN
tNS
-
-
-
8
6
pF
pF
ns
Input capacitance (other pins)
Pulse width ignored (Input filter on SCL and SDA)
80
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I2C DC and AC parameters
2
Table 77. I C DC characteristics
Symbol
Parameter
Test condition
Min.
Max.
Unit
Input leakage current
(SCL, SDA)
VIN = VSS or VCC
device in Standby mode
ILI
-
± 2
µA
SDA in Hi-Z, external voltage applied on SDA:
VSS or VCC
ILO
Output leakage current
-
± 2
µA
V
CC = 3.3 V, with RF ON
CC = 3.3 V, with RF OFF
CC = 5.5 V, with RF ON(1)
VCC = 5.5 V, with RF OFF
CC = 3.3 V, with RF ON
CC = 3.3 V, with RF OFF
VCC = 5.5 V, with RF ON
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
30
5
V
Standby power mode
supply current
ICC0
µA
V
30
5
V
150
150
150
150
250
200
250
200
550
500
550
500
V
Supply current
ICC1
ICC2
ICC3
µA
µA
µA
(I2C Session open)
VCC = 5.5 V, with RF OFF
VCC = 3.3 V (fC = 1 MHz), with RF ON (3)
Supply current (2)
(Read binary)
V
CC = 3.3 V (fC = 1 MHz), with RF OFF (3)
V
CC = 5.5 V (fC = 1 MHz),with RF ON (3)
VCC = 5.5 V (fC = 1 MHz),with RF OFF (3)
V
CC = 3.3 V (fC = 1 MHz),with RF ON (3)
CC = 3.3 V (fC = 1 MHz),with RF OFF (3)
Supply current (2)
(Update binary)
V
VCC = 5.5 V (fC = 1 MHz), with RF ON (3)
VCC = 5.5 V (fC = 1 MHz), with RF OFF (3)
VCC = 2.7 V (grade Y)
VCC = 2.4 V (grade G)
VCC = 5.5 V
Input low voltage
(SDA, SCL)
0.3
VCC
VIL
VIH
VIL
VIH
-0.45
V
V
V
VCC = 2.7 V (grade Y)
Input high voltage
(SDA, SCL)
VCC = 2.4 V (grade G)
0.7 VCC
6.5
VCC = 5.5 V
VCC = 2.7 V (grade Y)
Input low voltage
(RF disable)
-
VCC = 2.4 V (grade G)
0.45
VCC = 5.5 V
VCC = 2.7 V (grade Y)
VCC = 2.4 V (grade G)
VCC = 5.5 V
Input high voltage
(RF disable)
1.4
-
V
V
V
Output low voltage (SDA)
Output low voltage (GPO)
IOL = 3 mA, VCC = 5.5 V
-
-
0.4
0.4
IOL = 1 mA,
VCC = 2.7 V (grade Y) or 2.4 V (grade G)
to VCC = 5.5 V
VOL
1. When an RF session is Opened, Icc corresponds to the standby power mode.
2. Characterized only.
3. Input levels as defined in Figure 15.
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I2C DC and AC parameters
M24SR04-Y M24SR04-G
2
Table 78. I C AC characteristics (400 kHz)
Test conditions specified in Table 74
(preliminary data based on design simulations)
Symbol
Alt.
Parameter
Min.
Max.
Unit
fC
fSCL
Clock frequency
0.05
0.6
400
kHz
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ms
ns
ms
(1)
tCHCL
tHIGH Clock pulse width high
tLOW Clock pulse width low
20000
20000
(2)
tCLCH
1.3
tCL_reset
tXH1XH2
tXL1XL2
tDL1DL2
tDXCX
-
Clock reset
40000
-
(3)
(3)
tR
tF
tF
Input signal rise time
Input signal fall time
SDA (out) fall time
(3)
(3)
20
100
0
300
tSU:DAT Data in set up time
tHD:DAT Data in hold time
-
tCLDX
-
-
(4)
tCLQX
tDH
tAA
Data out hold time
100
-
(5)
tCLQV
Clock low to next data valid (access time)
900
-
(6)
tCHDX
tSU:STA Start condition set up time
tHD:STA Start condition hold time
tSU:STO Stop condition set up time
600
600
600
1300
-
tDLCL
tCHDH
tDHDL
-
-
tBUF
Time between Stop condition and next Start condition
-
I²C write time in one page
5
tW
tWR
I²C write time up to 246 bytes
-
150
80
40
(7)
tNS
-
-
Pulse width ignored (input filter on SCL and SDA)
Delay for I²C token release
-
tSTART_OUT
20
1. tCHCL timeout.
2. tCLCH timeout.
3. There is no min. or max. value for the input signal rise and fall times. It is however recommended by the I²C specification that the input
signal rise and fall times be more than 20 ns and less than 300 ns when fC < 400 kHz.
4. To avoid spurious Start and Stop conditions, a minimum delay is placed between SCL=1 and the falling or rising edge of
SDA.
5.
tCLQV is the time (from the falling edge of SCL) required by the SDA bus line to reach 0.8VCC in a compatible way with the
I2C specification (which specifies tSU:DAT (min) = 100 ns), assuming that the Rbus × Cbus time constant is less than 500 ns
(as specified in Figure 17).
6. For a restart condition, or following a write cycle.
7. Characterized only, not tested in production.
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I2C DC and AC parameters
2
Table 79. I C AC characteristics (1 MHz)
Test conditions specified in Table 74
(preliminary data based on design simulations)
Symbol
Alt.
Parameter
Min.
Max.
Unit
fC
fSCL Clock frequency
0.05
260
1000
-
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(1)
tCHCL
tHIGH Clock pulse width high
tLOW Clock pulse width low
(2)
tCLCH
500
-
(3)
(3)
tXH1XH2
tXL1XL2
tDL1DL2
tDXCX
tR
tF
tF
Input signal rise time
Input signal fall time
SDA (out) fall time
(3)
(3)
20
50
120
tSU:DAT Data in set up time
tHD:DAT Data in hold time
-
tCLDX
0
-
tCLQX
tDH
tAA
Data out hold time
100
-
-
(4)(5)
tCLQV
Clock low to next data valid (access time)
450
(6)
tCHDX
tSU:STA Start condition set up time
tHD:STA Start condition hold time
tSU:STO Stop condition set up time
250
250
250
-
-
-
tDLCL
tCHDH
Time between Stop condition and next Start
condition
tDHDL
tBUF
tWR
-
500
-
ns
I²C write time in one page
I²C write time up to 246 bytes
-
-
5
ms
ms
tW
150
Pulse width ignored (input filter on SCL and
SDA)
(7)
tNS
-
80
ns
1. tCHCL timeout.
2. tCLCH timeout.
3. There is no min. or max. value for the input signal rise and fall times. It is however recommended by the I²C
specification that the input signal rise and fall times be less than 120 ns when fC < 1 MHz.
4. To avoid spurious Start and Stop conditions, a minimum delay is placed between SCL=1 and the falling or
rising edge of SDA.
5. tCLQV is the time (from the falling edge of SCL) required by the SDA bus line to reach 0.8VCC in a
compatible way with the I2C specification (which specifies tSU:DAT (min) = 100 ns), assuming that the Rbus
× Cbus time constant is less than 500 ns (as specified in Figure 17).
6. For a reStart condition, or following a write cycle.
7. Characterized only, not tested in production.
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I2C DC and AC parameters
M24SR04-Y M24SR04-G
2
Figure 16. I C AC waveforms
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11.1
I2C timing measurement condition
Figure 17 represents the Maximum Rbus value versus bus parasitic capacitance (Cbus) for
2
an I C bus at maximum frequency f = 400 kHz.
C
Figure 17. Maximum Rbus value with f = 400 kHz
C
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72/90
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M24SR04-Y M24SR04-G
I2C DC and AC parameters
Figure 18 represents the Maximum Rbus value versus bus parasitic capacitance (Cbus) for
2
an I C bus at maximum frequency f = 1 MHz.
C
Figure 18. Maximum Rbus value with f = 1 MHz
C
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2
Figure 19. I C bus protocol
3#,
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3$!
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34!24
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34/0
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3#,
3$!
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34!24
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ꢏ
ꢂ
3#,
3$!
-3"
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34/0
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!)ꢀꢀꢁꢂꢅ"
DocID024754 Rev 15
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78
I2C DC and AC parameters
M24SR04-Y M24SR04-G
Table 80. Device select code
Device type identifier (1)
Chip Enable address
b3 b2 b1
RW
b0
b7
b6
b5
b4
Device select code 1
0
1
0
1
1
0
RW
1. The most significant bit, b7, is sent first.
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GPO parameters
12
GPO parameters
This section lists the timing of the GPO according to its configuration.
(1)
Table 81. GPO timings measurement
GPO field
I/F
Condition
Command
Kill session
Get session
Symbol
Typ. Unit
CmdSTPtoGPlow
*add 100 µs for boot
after POR
15*
15*
µs
µs
GPO low when
session active
I2C
0xX1
0x1X
I2C token release
sequence
I2C
RF
GPO return HZ
AnswerlbLBtoGPHZ 105
ns
µs
Session Open
GPO low when
session active
NDEF select
Deselect
CmdEOFtoGPlow
170
RF
I2C
GPO return HZ
CmdEOFtoGPHZ
CmdSTPtoGPlow
370
45
µs
µs
GPO low when
programming
Update Binary
Update Binary
Writing time duration
(No time extension)
0xX2
0x2X
I2C
RF
RF
5
75
5
ms
µs
WIP
CmdEOFtoGPlow
GPO low when
programming
Writing time duration
(No time extension)
ms
µs
GPO low when a
command is
computed
ReadBinary
or
UpdateBinary
55
or
5
I2C
CmdSTPtoGPlow
ms
ns
Answer Ready
0xX3
0x3X
GPO return HZ on
new command
After NewCmdlbFB
or AnswerlbFB
I2C
RF
RF
All commands
105
75
5
GPO low when
modifying NDEF
UpdateBinary
(Msg Length #0)
CmdEOFtoGPlow
µs
Message In
Progress
GPO low when
modifying NDEF
Writing time duration
(No time extension)
UpdateBinary
SendInterrupt
All commands
SendInterrupt
ms
GPO low after
receiving an
Interrupt command
I2C
I2C
CmdSTPtoGPlow
50
µs
ns
0xX4
0x4X
After NewCmdlbFB
or AnswerlbFB
Interrupt
GPO return HZ
105
RF
RF
GPO low after
receiving an
Interrupt command
CmdEOFtoGPlow
Pulse duration
75
µs
µs
540
DocID024754 Rev 15
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78
GPO parameters
GPO field
M24SR04-Y M24SR04-G
(1)
Table 81. GPO timings measurement (continued)
I/F
Condition
Command
Symbol
Typ. Unit
GPO low when
reset
I2C
Reset GPO
CmdSTPtoGPlow
40
40
60
60
µs
µs
µs
µs
0xX5
0x5X
GPO return HZ
when set
I2C
RF
RF
Set GPO
Reset GPO
Set GPO
CmdSTPtoGPHZ
CmdEOFtoGPlow
CmdEOFtoGPHZ
State Control
GPO low when
reset
GPO return HZ
when set
Anticollision
command or start
of RF disturb
(command using
another RF
GPO low after
receiving an RF
command
RF
RF
CmdSOFtoGPlow
CmdEOFtoGPHZ
6
µs
µs
protocol)
RF Busy
0x6X
Deselect or end of
RF disturb
(command using
another RF
GPO return HZ
afterdeselectionor
RF command in
another protocol
460
protocol)
1. Characterized only.
76/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
Write cycle definition
13
Write cycle definition
(1)
Table 82. Write cycle definition
Test Conditions
Symbol
Ncycle
Parameter
Min
Max
Units
TA ≤ 25 °C, VCC(min) < VCC < VCC(max)
TA ≤ 85 °C, VCC(min) < VCC < VCC(max)
-
-
1,000,000
600,000
Write cycle
Write cycle
endurance(2)
1. A write cycle is calculated per byte, and corresponds to a write to this byte.
2. Write cycle endurance is defined by characterization and qualification.
DocID024754 Rev 15
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78
RF electrical parameters
M24SR04-Y M24SR04-G
14
RF electrical parameters
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device in RF mode.
The parameters in the DC and AC characteristics tables that follow are derived from tests
performed under the Measurement Conditions summarized in the relevant tables.
Designers should check that the operating conditions in their circuit match the measurement
conditions when relying on the quoted parameters.
Table 83. Default operating conditions
Symbol
Parameter
Min.
Max.
Unit
Ambient operating temperature for grade 6
Ambient operating temperature for grade 5
–40
-25
85
85
TA
°C
(1)
Table 84. RF characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
fC
External RF signal frequency
13.553
1500
13.56 13.567 MHz
H_ISO
Operating field according to ISO
TA = 0 °C to 50 °C
-
-
7500 mA/m
7500 mA/m
Operating field in extended
temperature range
H_Extended
TA = -40 °C to 85 °C
500
MICARRIER 100% carrier modulation index
MI=(A-B)/(A+B)
90
28/fC
7/fC
1.5xt4
0
-
-
-
-
-
100
40.5/fC
t1
%
µs
µs
µs
µs
t1
t2
t3
t4
Pause A length
-
-
-
-
Pause A low time
Pause A rise time
Pause A rise time section
16/fC
6/fC
Minimum time from carrier
generation to first data
tMIN CD
Wt
From H-field min
-
-
-
-
5
-
ms
ms
RF write time (including internal
Verify) for one page
6
CTUN
Internal tuning capacitor in SO8 (2)
fC = 13.56 MHz
Chip reset
22.5
-
25
-
27.5
5
pF
tRF_OFF
RF OFF time
ms
1. All timing characterizations were performed on a reference antenna with the following characteristics:
External size: 75 mm x 48 mm
Number of turns: 6
Width of conductor: 0.6 mm
Space between two conductors: 0.6 mm
Value of the tuning capacitor in SO8: 25 pF (M24SR04)
Value of the coil: 5 µH
Tuning frequency: 14.2 MHz.
2. Characterized only, at room temperature only, measured at VAC0-VAC1 = 2 V peak to peak at 13.56 MHz.
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M24SR04-Y M24SR04-G
Package information
15
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
®
®
ECOPACK packages, depending on their level of environmental compliance. ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
®
ECOPACK is an ST trademark.
15.1
SO8N package information
Figure 20. SO8N - 8-lead plastic small outline, 150 mils body width, package outline
H X ꢂꢃ
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C
CCC
B
E
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1. Drawing is not to scale.
Table 85. SO8N - 8-lead plastic small outline, 150 mils body width,
package data
millimeters
Typ
inches (1)
Symbol
Min
Max
Min
Typ
Max
A
A1
A2
b
-
-
1.750
0.250
-
-
0.0689
0.0098
-
0.100
1.250
0.280
0.170
4.800
5.800
3.800
-
-
0.0039
0.0492
0.0110
0.0067
0.1890
0.2283
0.1496
-
-
-
-
-
0.480
0.230
5.000
6.200
4.000
-
-
0.0189
0.0091
0.1969
0.2441
0.1575
-
c
-
4.900
6.000
3.900
1.270
-
-
D
E
0.1929
0.2362
E1
e
0.1535
0.0500
h
0.250
0°
0.500
8°
0.0098
0°
-
-
-
0.0197
8°
k
-
L
0.400
-
1.270
0.0157
0.0500
DocID024754 Rev 15
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86
Package information
M24SR04-Y M24SR04-G
Table 85. SO8N - 8-lead plastic small outline, 150 mils body width,
package data (continued)
millimeters
inches (1)
Symbol
Min
Typ
Max
Min
Typ
Max
L1
-
-
1.040
-
-
-
-
0.0409
-
-
ccc
0.100
0.0039
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Figure 21. SO8N - 8-lead plastic small outline, 150 mils bosy width,
package recommended footprint
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ꢂꢇꢁꢈ
2ꢈB62ꢃ1B)3B9ꢂ
80/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
Package information
15.2
TSSOP8 package information
Figure 22. TSSOP8 - 8-lead thin shrink small outline, 3 x 4 mm, 0.5 mm pitch
package outline
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1. Drawing is not to scale.
/
Table 86. TSSOP8 - 8-lead thin shrink small outline, 169 mils width, package data
millimeters
Min
inches (1)
Symbol
Typ
Max
Typ
Min
Max
A
A1
A2
b
-
-
1.200
0.150
1.050
0.300
0.200
0.100
3.100
-
-
-
0.0472
0.0059
0.0413
0.0118
0.0079
0.0039
0.1220
-
0.050
0.800
0.190
0.090
-
-
0.0020
0.0315
0.0075
0.0035
-
-
0.0394
-
1.000
-
c
-
-
CP
D
-
-
2.900
-
3.000
0.650
6.400
4.400
0.600
1.000
0.1142
-
0.1181
0.0256
0.2520
0.1732
0.02636
0.0394
-
e
E
6.200
4.300
0.450
-
6.600
4.500
0.750
-
0.2441
0.1693
0.0177
-
0.2598
0.1772
0.0295
-
E1
L
L1
α
0°
8°
0°
8°
1. Values in inches are converted from mm and rounded to 4 decimal digits.
DocID024754 Rev 15
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86
Package information
M24SR04-Y M24SR04-G
15.3
UFDFPN8 package information
Figure 23. UFDFPN8 - 8-lead, 2 x 3 mm, 0.5 mm pitch ultra thin profile fine pitch
dual flat package outline
$
'
%
1
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=:EB0(B9ꢂ
1. Max package warpage is 0.05 mm.
2. Exposed copper is not systematic and can appear partially or totally according to the cross section.
3. Drawing is not to scale.
4. The central pad (the area E2 by D2 in the above illustration) must be either connected to VSS or left floating
(not connected) in the end application.
82/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
Package information
Table 87. UFDFPN8 - 8- lead, 2 x 3 mm, 0.5 mm pitch ultra thin profile fine pitch
dual flat package mechanical data
millimeters
Typ
inches (1)
Symbol
Min
Max
Min
Typ
Max
A
0.450
0.550
0.600
0.050
0.300
2.100
1.600
3.100
1.600
-
0.0177
0.0217
0.0236
0.0020
0.0118
0.0827
0.0630
0.1220
0.0630
-
A1
0.000
0.020
0.0000
0.0008
b(2)
0.200
0.250
0.0079
0.0098
D
1.900
2.000
0.0748
0.0787
D2 (rev MC)
1.200
-
0.0472
-
E
2.900
3.000
0.1142
0.1181
E2 (rev MC)
1.200
-
0.0472
-
e
K (rev MC)
L
-
0.500
-
0.0197
0.300
-
-
-
-
-
-
-
-
-
-
0.0118
-
-
-
-
-
-
-
-
-
-
0.300
0.500
0.150
-
0.0118
0.0197
0.0059
-
L1
-
-
L3
0.300
0.0118
aaa
-
-
-
-
-
0.150
0.100
0.100
0.050
0.080
-
-
-
-
-
0.0059
0.0039
0.0039
0.0020
0.0031
bbb
ccc
ddd
eee (3)
1. Values in inches are converted from mm and rounded to 4 decimal digits.
2. Dimension b applies to plated terminal and is measured between 0.15 and 0.30 mm from the terminal tip.
3. Applied for exposed die paddle and terminals. Exclude embedded part of exposed die paddle from
measuring.
DocID024754 Rev 15
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86
Package information
M24SR04-Y M24SR04-G
15.4
WFDFPN8 package information
Figure 24. WFDFPN8 (MLP8) 8-lead, 2 x 3 mm, 0.5 mm pitch very thin fine pitch
dual flat package outline
'ꢁ
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'DWXPꢄ<
H
$
%
'
3LQꢄꢐꢂꢄ,'ꢄPDUNLQJ
3LQꢄꢐꢂ
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.
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-
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GGG
&
&
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&
$
HHH #
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6LGHꢄYLHZ
Hꢅꢁ
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$ꢊ<ꢀB0(B9ꢀ
1. Drawing is not to scale.
Table 88. WFDFPN8 8-lead thin fine pitch dual flat package no lead
mechanical data
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
A
A1
b
0.700
0.025
0.200
1.900
2.900
-
0.750
0.045
0.250
2.000
3.000
0.500
-
0.800
0.065
0.300
2.100
3.100
-
0.0276
0.0010
0.0079
0.0748
0.1142
-
0.0295
0.0315
0.0026
0.0118
0.0827
0.1220
-
0.0018
0.0098
D
0.0787
E
0.1181
e
0.0197
L1
L3
D2
E2
-
0.150
-
-
-
-
-
-
0.0059
-
0.300
1.050
1.050
-
0.0118
0.0413
0.0413
-
1.650
1.450
0.0650
0.0571
-
84/90
DocID024754 Rev 15
M24SR04-Y M24SR04-G
Package information
Table 88. WFDFPN8 8-lead thin fine pitch dual flat package no lead
mechanical data (continued)
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
K
L
0.400
0.300
-
-
-
0.0157
0.0118
-
-
-
0.500
0.0197
NX(2)
ND(3)
aaa
bbb
ccc
8
4
-
8
4
-
-
-
-
-
-
0.150
0.100
0.100
0.050
0.080
-
-
-
-
-
0.0059
0.0039
0.0039
0.0020
0.0031
-
-
-
-
ddd
eee(4)
-
-
-
-
1. Values in inches are converted from mm and rounded to four decimal digits.
2. NX is the number of terminals.
3. ND is the number of terminals on “D” sides.
4. Applied for exposed die paddle and terminals. Excluding embedding part of exposed die paddle from
measuring.
DocID024754 Rev 15
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86
Part numbering
M24SR04-Y M24SR04-G
16
Part numbering
Table 89. Ordering information scheme for packaged devices
M24 SR 04- Y MN
Example:
6
T
/2
Device type
M24 = I2C interface device
Device feature
SR = Short range
Memory size
04 = memory size in Kbits
Voltage range
Y = 2.7 to 5.5 V
G = 2.4 to 5.5 V, only available in grade 5 (-25 to 85 °C)
Package
MN = SO8N
DW = TSSOP8
MC = UFDFPN8
MF = WFDFPN8(1)
SG12I = 120 µm ± 15 µm bumped and sawn inkless wafer on 8-inch frame(2)
Device grade
5 = industrial: device tested with standard test flow over -25 to 85 °C
6 = industrial: device tested with standard test flow over –40 to 85 °C
(No parameter for SG12I)
Option
T = Tape and reel packing
(No parameter for SG12I)
Capacitance
/2 = 25 pF
1. Package for automotive grade.
2. SG12I is only available for voltage range “G”.
Note:
Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are
not yet qualified and therefore not yet ready to be used in production and any consequences
deriving from such usage will not be at ST charge. In no event, ST will be liable for any
customer usage of these engineering samples in production. ST Quality has to be contacted
prior to any decision to use these Engineering samples to run qualification activity.
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Revision history
17
Revision history
Table 90. Document revision history
Changes
Date
Revision
13-Jun-2013
1
Initial release.
Added UFDFPN8 drawing on page 1.
Edited Section 2.6: RF disable.
29-Aug-2013
2
Updated ICC0 parameter in Table 77: I2C DC characteristics and added a note.
Added Section 15.3: UFDFPN8 package information and UFDFPN8 package.
Updated the Capacitance value to 25 pF.
Removed all “Battery assisted” and “Wire power management” information (conditioned
for a future use).
Moved GetI2Csession command before Section 5.10.2: KillRFsession command.
Added 2 new sections: Section 7.4: I²C token release sequence and Section 7.5: I²C
timeout on clock period.
Removed “DID field” information from Section 7.9: I²C frame format and from Table 69
to Table 71 .
28-Oct-2013
3
Updated different values in Table 73: Absolute maximum ratings, Table 74: I2C
operating conditions, Table 77: I2C DC characteristics, Table 78: I2C AC characteristics
(400 kHz), Table 79: I2C AC characteristics (1 MHz), and Table 84: RF characteristics,
and removed all “(forecast data)” from the table titles.
Moved RF characteristics table before Table 84: RF characteristics, deleted footnote (1)
and updated footnote (2).
Fully edited.
Added a note to Section 7.1: I2C communication protocol below Figure 12: Command
and response exchange.
08-Nov-2013
4
Changed the datasheet status from “Preliminary data” to “Production data”.
Restored the whole content of Table 77: I2C DC characteristics.
Updated the capacitor values in Section 2.5.1: Operating supply voltage VCC.
Removed bullet (4) from Section 8.6: Reaching the read-only state for an NDEF file.
Updated VESD value in Table 73: Absolute maximum ratings, ICC values in Table 77:
I2C DC characteristics, and H_Extended value in Table 84: RF characteristics.
18-Dec-2013
5
Added details to “S(WTX)” bullet in Section 5.4: S-Block format.
Added sentences to Section 5.6.8: UpdateBinary command and to Section 5.8.3:
DisablePermanentState command.
Changed ‘0x001E’ value into ‘0x001F’ in Table 56: StateControl command format.
Updated values in Table 61: ATS response.
Added Note (4) to Figure 10: Changing the read access right to an NDEF file and
Figure 11: Changing the write access right to an NDEF file.
DocID024754 Rev 15
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89
Revision history
M24SR04-Y M24SR04-G
Table 90. Document revision history (continued)
Changes
Date
Revision
Updated Figure 5: GPO configured as I2C answer ready (GPO field = 0xX3) and
Figure 8: GPO configured as State Control (GPO field = 0xX5 or 0x5X).
Added I2C text to the Note below Table 22: S-Block detailed format.
Edited the third paragraph of Section 5.8.1: ExtendedReadBinary command.
Added Section 5.8.4: UpdateFileType command and Section 8.8: Changing a File
type Procedure.
Updated bullet 3 in Section 7.9: I²C frame format, and the Payload row of Table 70: I2C
host to M24SR04. Updated bullet 2 in Section 7.11: Close the I²C session.
26-Feb-2014
6
Edited VIO row and removed VESD (machine model) row from Table 73: Absolute
maximum ratings.
Updated ICC rows and added a Note to Table 77: I2C DC characteristics.
Updated Figure 20: SO8N - 8-lead plastic small outline, 150 mils body width, package
outline.
Fixed a typo in Figure 23: UFDFPN8 - 8-lead, 2 x 3 mm, 0.5 mm pitch ultra thin profile
fine pitch dual flat package outline title: UFDPFN8 changed into UFDFPN8.
Added data for automotive grade in Table 6: Field list and Table 72: UID format
Added WFDFPN8 package for automotive grade under qualification
Added Figure 24: WFDFPN8 (MLP8) 8-lead, 2 x 3 mm, 0.5 mm pitch very thin fine pitch
dual flat package outline
Added WFDFPN8 package for automotive grade under qualification
11-Jun-2014
7
Added Table 88: WFDFPN8 8-lead thin fine pitch dual flat package no lead mechanical
data
Added MF = WFDFPN8 inside Table 89: Ordering information scheme for packaged
devices
Inserted byte <04> between A4 and 00 inside Figure 14: NDEF tag Application
Select command
Added:
– New Root Part Number on cover page
– single supply voltage for I2C for grade G and note (1)
Updated:
20-Nov-2014
8
– Figure 14
– Figure 73,Figure 74, Figure 77, Figure 78, Figure 83, Figure 89
Added
– Figure 21: SO8N - 8-lead plastic small outline, 150 mils bosy width, package
recommended footprint
Updated
– Section 15: Package information
– Table 73: Absolute maximum ratings
– Table 74: I2C operating conditions
– Table 78: I2C AC characteristics (400 kHz)
– Table 89: Ordering information scheme for packaged devices
20-Aug-2015
9
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Revision history
Table 90. Document revision history (continued)
Changes
Date
Revision
Updated:
– Features
– Section 2.7.6: State Control configuration (GPO field = 0xX5 or 0x5X)
Added:
04-Mar-2016
10
– Table 7: Details about I2C watchdog
– Table 82: Write cycle definition
Updated:
– Features
– Table 73: Absolute maximum ratings
– Table 82: Write cycle definition
Added:
27-Apr-2016
11
– Section 13: Write cycle definition
Updated:
– Section 3.2.2: Changing the read access right to NDEF files
– Section 3.2.3: Changing the write access right to NDEF files
– Section 5.6.5: NDEF Select command
– Section 5.8.4: UpdateFileType command
– Section 5.8.5: SendInterrupt command
– Section 8.2: Reading of an NDEF message
– Section 8.5: Unlocking an NDEF file
– Section 8.6: Reaching the read-only state for an NDEF file
– Section 16: Part numbering
14-Oct-2016
12
Added:
– Section 8.9: Updating a NDEF file
Updated:
– Table 35: R-APDU of the ReadBinary command
– Table 47: R-APDU of the ExtendedReadBinary command
– Table 89: Ordering information scheme for packaged devices
18-Nov-2016
07-Feb-2017
08-Feb-2017
13
14
15
Added:
– Note 4. on Figure 23.: UFDFPN8 - 8-lead, 2 x 3 mm, 0.5 mm pitch ultra thin profile
fine pitch dual flat package outline
Updated:
– Table 89: Ordering information scheme for packaged devices
Package SB12I replaced with SG12I.
Updated:
– Table 73: Absolute maximum ratings
– Table 89: Ordering information scheme for packaged devices
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improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on
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