AT24C256C-XPD-T [MICROCHIP]
EEPROM, 32KX8, Serial, CMOS, PDSO8, 4.40 MM, GREEN, PLASTIC, MO-153AA, TSSOP-8;
| 型号： | AT24C256C-XPD-T |
| 厂家： | 
MICROCHIP |
| 描述： | EEPROM, 32KX8, Serial, CMOS, PDSO8, 4.40 MM, GREEN, PLASTIC, MO-153AA, TSSOP-8 可编程只读存储器 电动程控只读存储器 电可擦编程只读存储器 光电二极管 |
| 文件： | 总23页 (文件大小：893K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AT24C128C and AT24C256C
I2C Automotive Temperature Serial EEPROM
128K (16,384 x 8), 256K (32,768 x 8)
DATASHEET
Features
2-Wire Serial Interface Compatible with I2C
Internally Organized 16,384 x 8 (128K), 32,768 x 8 (256K)
Low-voltage, Medium-voltage and High-voltage Operation
̶
Grade 1, VCC = 2.5V to 5.5V
Grade 2(1) and 3, VCC = 1.7V to 5.5V
̶
Extended Temperature Range (Grade 1, 2(1), and 3 as defined in AEC-Q100)
̶
Grade 1 Temperature Range: -40C to 125C
Grade 2 Temperature Range(1): -40C to 105C
Grade 3 Temperature Range: -40C to 85C
̶
̶
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
400kHz Compatibility
Write Protect Pin for hardware data protection
64 byte Page Write Modes
Partial Page Writes are Allowed
Self-timed Write Cycle (5ms max)
High-reliability
̶
̶
Endurance: 1,000,000 Write Cycles
Data Retention: 100 Years
8-lead JEDEC SOIC, 8-lead TSSOP, and 8-pad UDFN Packages
Note: 1. Contact Sales for Grade 2 Availability
Description
The Atmel® AT24C128C/256C provides 131,072/262,144 bits of Serial Electrically
Erasable and Programmable Read-Only Memory (EEPROM) organized as
16,384/32,768 words of 8 bits each. The device is optimized for use in many
automotive applications where low-power and low-voltage operation are essential.
AT24C128C/256C is available in space-saving 8-lead JEDEC SOIC, 8-lead
TSSOP, and 8-pad UDFN packages and is accessed via a 2-wire serial interface.
This device operates from 2.5V to 5.5V for Grade 1 or 1.7V to 5.5V for Grades 2(1)
and 3.
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
Table of Contents
1. Pin Configurations and Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Absolute Maximum Ratings* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.1
5.2
5.3
Pin Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6. Device Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7. Device Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8. Write Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9. Read Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9.1
Power Recommendation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10.1 Ordering Code Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10.2 Ordering Code Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
10.2.1 Automotive Grade 1, VCC = 2.5V to 5.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
10.2.2 Automotive Grade 3, VCC = 1.7V to 5.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10.3 Product Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11. Packaging Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11.1 8S1 — 8-lead JEDEC SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11.2 8X — 8-lead TSSOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11.3 8MA2 — 8-pad UDFN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
12. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
1.
Pin Configurations and Pinouts
Figure 1.
Pin Configurations
8-lead SOIC
(Top View)
8-lead TSSOP
(Top View)
Pin Name
SDA
Function
Serial Data
A0
A1
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
A0
A1
A2
VCC
WP
SCL
SDA
A2
SCL
Serial Clock Input
Write Protect
Address Inputs
Ground
GND
GND
WP
A0 to A2
GND
8-pad UDFN
(Top View)
A0
A1
A2
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
VCC
Power Supply
GND
Note:
Drawings are not to scale.
2.
Absolute Maximum Ratings*
*Notice: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions beyond those
indicated in the operational sections of this
specification is not implied. Exposure to
Operating Temperature . . . . . . . . . . .-55C to +125C
Storage Temperature . . . . . . . . . . . . .-65C to +150C
Voltage on any pin
with respect to ground . . . . . . . . . . . . . -1.0V to +7.0V
Maximum Operating Voltage . . . . . . . . . . . . . . . 6.25V
DC Output Current . . . . . . . . . . . . . . . . . . . . . . .5.0mA
absolute maximum rating conditions for
extended periods may affect device reliability.
Atmel AT24C128C/256C Automotive [DATASHEET]
3
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
3.
Block Diagram
Figure 3-1.
Block Diagram
V
CC
GND
WP
SCL
SDA
Start
Stop
Logic
Serial
Control
Logic
EN
H.V. Pump/Timing
Data Recovery
LOAD
COMP
Device
Address
Comparator
LOAD
INC
A
A
A
2
1
0
R/W
Data Word
ADDR/Counter
EEPROM
Serial MUX
Y DEC
DOUT/ACK
Logic
D
IN
D
OUT
4
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
4.
Pin Description
Serial Clock (SCL): The SCL input is used to positive edge clock data into each EEPROM device and negative
edge clock data out of each device.
Serial Data (SDA): The SDA pin is bidirectional for serial data transfer. This pin is open-drain driven and may
be wire-ORed with any number of other open-drain or open-collector devices.
Device Addresses (A2, A1, A0): The A2, A1, and A0 pins are device address inputs that are hardwired or left not
connected for hardware compatibility with other Atmel AT24C devices. When the pins are hardwired, as many
as eight 128K/256K devices may be addressed on a single bus system (device addressing is discussed in detail
in Section 7., Device Addressing). If the pins are left floating, the A2, A1, and A0 pins will be internally pulled
down to GND if the capacitive coupling to the circuit board VCC plane is < 3pF. If coupling is > 3pF, Atmel
recommends connecting the pin to GND.
Write Protect (WP): AT24C128C/256C has a Write Protect pin that provides hardware data protection. The
Write Protect pin allows normal read/write operations when connected to ground (GND). When the Write Protect
pin is connected to VCC, the write protection feature is enabled and operates as shown in the following table.
Table 4-1.
Write Protect
WP Pin Status
Part of the Array Protected
Full (128K/256K) Array
At VCC
At GND
Normal Read/Write Operations
Atmel AT24C128C/256C Automotive [DATASHEET]
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Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
5.
Memory Organization
AT24C128C/256C, 128K/256KSerial EEPROM: The 128K/256K is internally organized as 256/512 pages of
64 bytes each. Random word addressing requires a 14/15 bit data Word Address.
5.1
Pin Capacitance
Table 5-1.
Pin Capacitance(1)
Symbol
CI/O
Test Condition
Max
8
Units
pF
Conditions
VI/O = 0V
VIN = 0V
Input/Output Capacitance (SDA)
Input Capacitance (SCL)
CIN
6
pF
Note:
1. This parameter is characterized and is not 100% tested.
5.2
DC Characteristics
Table 5-2.
DC Characteristics
Applicable over recommended operating range from: TA1 = -40C to +125C, VCC1 = 2.5V to 5.5V; TA2 = -40C to 105C,
VCC2 = 1.7V to 5.5V. (unless otherwise noted).
Symbol
Parameter
Test Condition
Grade 1
Min
2.5
1.7
Typ
Max
5.5
Units
V
VCC1
VCC2
Supply Voltage
Grade 2(2) and 3
5.5
Read at 100kHz
Write at 100kHz
0.4
2.0
1.0
ICC
Supply Current
Standby Current
VCC = 5.0V
mA
3.0
ISB1
ISB2
ISB3
ILI
VCC = 1.7V
0.1
3.0
VCC = 2.5V
VIN = VCC or VSS
1.6
4.0
μA
VCC = 5.0V
4.0
6.0
Input Leakage Current
Output Leakage Current
Input Low Level(1)
VIN = VCC or VSS
VOUT = VCC or VSS
0.10
0.05
3.0
μA
V
ILO
3.0
VIL
-0.6
VCC x 0.3
VCC + 0.5
0.4
VIH
Input High Level(1)
VCC x 0.7
VOL1
VOH1
VOL2
VOH2
Output Low-voltage
Output High-voltage
Output Low-voltage
Output High-voltage
IOL = 3.00mA
IOH = -1.60mA
IOL = 0.15mA
IOH = -100μA
VCC = 2.5V
VCC = 1.7V
V
VCC – 0.8
VCC – 0.2
0.2
V
Notes: 1. VIL min and VIH max are reference only and are not tested.
2. Contact Sales for Grade 2 Availability
6
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
5.3
AC Characteristics
Table 5-3.
AC Characteristics
Applicable over recommended operating range from TA = -40°C to +125°C, VCC = +1.7V to +5.5V, CL = 1 TTL Gate and
100pF unless otherwise noted or restricted by grade. Test conditions are listed in Note 3.
Symbol
Parameter
Min
Max
400
Units
fSCL
Clock Frequency, SCL
Clock Pulse Width Low
Clock Pulse Width High
Noise Suppression Time(1)
Clock Low to Data Out Valid
Time the bus must be free before a new transmission can start(2)
Start Hold Time
kHz
tLOW
tHIGH
tI
1.2
0.6
μs
μs
50
ns
tAA
0.1
1.2
0.6
0.6
0
0.9
μs
tBUF
tHD.STA
tSU.STA
tHD.DAT
tSU.DAT
tR
μs
μs
Start Set-up Time
μs
Data In Hold Time
μs
Data In Set-up Time
100
ns
Inputs Rise Time(2)
300
300
ns
tF
Inputs Fall Time(2)
ns
tSU.STO
tDH
Stop Set-up Time
0.6
50
μs
ns
Data Out Hold Time
tWR
Write Cycle Time
5
ms
Endurance(1) 5.0V, 25C, Page Mode
1,000,000
Write Cycles
Notes: 1. This parameter is characterized and is not 100% tested (TA = 25C).
2. This parameter is characterized.
3. AC measurement conditions:
RL (connects to VCC): 1.3k (2.5V, 5.5V), 10k (1.7V)
Input pulse voltages: 0.3VCC to 0.7VCC
Input rise and fall times: 50ns
Input and output timing reference voltages: 0.5 x VCC
Atmel AT24C128C/256C Automotive [DATASHEET]
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Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
6.
Device Operation
Clock and Data Transitions: The SDA pin is normally pulled high with an external device. Data on the SDA pin
may change only during SCL low time periods. Data changes during SCL high periods will indicate a Start or
Stop condition as defined below.
Figure 6-1.
Data Validity
SDA
SCL
Data Stable
Data Stable
Data
Change
Start Condition: A high-to-low transition of SDA with SCL high is a Start condition which must precede any
other condition.
Stop Condition: A low-to-high transition of SDA with SCL high is a Stop condition. After a read sequence, the
Stop condition will place the EEPROM in a standby power mode.
Figure 6-2.
SDA
Start and Stop Definition
SCL
Start
Condition
Stop
Condition
8
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words.
The EEPROM sends a zero to acknowledge that it has received each word. This happens during the ninth clock
cycle.
Figure 6-3.
Output Acknowledge
1
8
9
SCL
Data In
Data Out
Start
Condition
Acknowledge
Standby Mode: The AT24C128C/256C features a low-power standby mode which is enabled:
Upon power-up.
After the receipt of the stop bit and the completion of any internal operations.
Memory Reset: After an interruption in protocol, power loss, or system reset, any 2-wire part can be reset by
following these steps:
1. Create a Start condition (if possible).
2. Clock nine cycles.
3. Create another Start condition followed by Stop condition as shown in the following figures.
The device should be ready for the next communication after above steps have been completed. In the event
that the device is still non-responsive or remains active on the SDA bus, a power cycle must be used to reset
the device
Figure 6-4.
Memory Reset
Dummy Clock Cycles
3
SCL
1
2
8
9
Start
Stop
Start
Condition
Condition
Condition
SDA
Atmel AT24C128C/256C Automotive [DATASHEET]
9
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
Figure 6-5.
Bus Timing
SCL: Serial Clock, SDA: Serial Data I/O
tHIGH
tF
tR
tLOW
tLOW
SCL
tSU.STA
tHD.STA
tHD.DAT
tSU.DAT
tSU.STO
SDA In
tAA
tDH
tBUF
SDA Out
Figure 6-6.
Write Cycle Timing
SCL: Serial Clock, SDA: Serial Data I/O
SCL
ACK
th
8
bit
SDA
WORDn
(1)
t
wr
Start
Condition
Stop
Condition
Note:
1. The length of the self timed write cycle, or tWR, is defined as the amount of time from the Stop condition that
begins the internal write operation, to the Start condition of the first Device Address byte sent to the device that
it subsequently responds to with an ACK.
10
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
7.
Device Addressing
The 128K/256K EEPROM requires an 8-bit device address word following a start condition to enable the device
for a read or write operation.
The device address word consists of a mandatory one, zero sequence for the first four most significant bits as
shown. This is common to all the Serial EEPROM devices.
The 128K/256K uses the three device address bits, A2, A1, and A0, to allow as many as eight devices on the
same bus. These bits must compare to their corresponding hardwired input pins. The A2, A1, and A0 pins use an
internal proprietary circuit that biases them to a logic low condition if the pins are allowed to float.
The eighth bit of the device address is the Read/Write operation select bit. A read operation is initiated if this bit
is high and a write operation is initiated if this bit is low.
If the device address meets the requirements listed above, the device will acknowledge with a zero by pulling
the SDA signal low. If the comparison is not made, the device will return to a standby state and the SDA signal
will float high.
Figure 7-1.
Device Address
128K/256K
1
0
1
0
A2
A1
A0
R/W
LSB
MSB
Atmel AT24C128C/256C Automotive [DATASHEET]
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Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
8.
Write Operations
Byte Write: A write operation requires two 8-bit data word addresses following the device address word and
acknowledgment. Upon receipt of this address, the EEPROM will again respond with a zero and then clock in
the first 8-bit data word. Following receipt of the 8-bit data word, the EEPROM will output a zero and the
addressing device, such as a microcontroller, must terminate the write sequence with a stop condition. At this
time the EEPROM enters an internally timed write cycle, tWR, to the nonvolatile memory. All inputs are disabled
during this Write Cycle and the EEPROM will not respond until the write is complete.
Figure 8-1.
Byte Write
S
T
A
R
T
W
R
I
S
T
Device
First
Second
T
E
O
P
Data
Address
Word Address
Word Address
t
SDA LINE
M
S
B
L R A
M
S
B
A
C
K
L A
S C
B K
A
C
K
S /
C
B W K
Notes: 1. * = Don't care bit.
2. t = Don't care bit for AT24C128C.
Page Write: The 128K/256K EEPROM is capable of 64 byte page writes.
A Page Write is initiated the same as a Byte Write, but the microcontroller does not send a stop condition after
the first data word is clocked in. Instead, after the EEPROM acknowledges receipt of the first data word, the
microcontroller can transmit up to sixty-three more data words. The EEPROM will respond with a zero after
each data word received. The microcontroller must terminate the Page Write sequence with a stop condition.
The data Word Address lower six bits are internally incremented following the receipt of each data word. The
higher data Word Address bits are not incremented, retaining the memory page row location. When the Word
Address, internally generated, reaches the page boundary, the following byte is placed at the beginning of the
same page. If more than thirty-one data words are transmitted to the EEPROM, the data Word Address will
roll-over and previous data will be overwritten.
Figure 8-2.
Page Write
S
T
A
R
T
W
R
I
S
T
Device
First
Second
T
E
O
P
Address
Data (n)
Data (n + x)
Word Address (n)
Word Address (n)
t
SDA LINE
M
L R A
S / C
B W K
A
C
K
A
C
K
A
C
K
A
C
K
S
B
Notes: 1. * = Don't care bit.
2. t = Don't care bit for AT24C128C.
Acknowledge Polling: Once the internally timed write cycle has started and the EEPROM inputs are disabled,
Acknowledge Polling can be initiated. This involves sending a start condition followed by the device address
word. The Read/Write bit is representative of the operation desired. Only if the internal write cycle has
completed will the EEPROM respond with a zero, allowing the read or write sequence to continue.
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Atmel AT24C128C/256C Automotive [DATASHEET]
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9.
Read Operations
Read operations are initiated the same way as write operations with the exception that the Read/Write select bit
in the device address word is set to one. There are three read operations:
Current Address Read
Random Address Read
Sequential Read
Current Address Read: The internal data word address counter maintains the last address accessed during
the last read or write operation, incremented by one. This address stays valid between operations as long as the
device power is maintained. The address roll-over during read is from the last byte of the last memory page to
the first byte of the first page. The address roll-over during write is from the last byte of the current page to the
first byte of the same page.
Once the device address with the Read/Write select bit set to one is clocked in and acknowledged by the
EEPROM, the current address data word is serially clocked out. The microcontroller does not respond with an
input zero but does generate a following Stop condition.
Figure 9-1.
Current Address Read
S
T
A
R
T
R
E
S
T
Device
A
D
O
P
Address
SDA LINE
M
S
B
L R A
S / C
B W K
N
O
DATA
A
C
K
Random Read: A Random Read requires a dummy Byte Write sequence to load in the data Word Address.
Once the device address word and data Word Address are clocked in and acknowledged by the EEPROM, the
microcontroller must generate another start condition. The microcontroller now initiates a current address read
by sending a device address with the Read/Write select bit high. The EEPROM acknowledges the device
address and serially clocks out the data word. The microcontroller does not respond with a zero but does
generate a following stop condition.
Figure 9-2.
Random Read
S
T
A
R
T
S
T
A
R
T
W
R
E
A
D
S
T
R
I
1st, 2nd Word
Address n
Device
Device
O
P
T
E
Address
Address
t
SDA LINE
M
S
B
L R A
A
C
K
A
C
K
N
O
Data n
S /
C
B W K
A
C
K
Dummy Write
Notes: 1. * = Don’t care bit.
2. t = Don't care bit for AT24C128C.
Atmel AT24C128C/256C Automotive [DATASHEET]
13
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
Sequential Read: Sequential Reads are initiated by either a Current Address Read or a Random Address
Read. After the microcontroller receives a data word, it responds with an acknowledge. As long as the EEPROM
receives an acknowledge, it will continue to increment the data Word Address and serially clock out sequential
data words. When the memory address limit is reached, the data Word Address will roll-over and the Sequential
Read will continue. The Sequential Read operation is terminated when the microcontroller does not send an
acknowledge (pull the SDA signal low), but does generate the Stop condition.
Figure 9-3.
Sequential Read
R
E
A
S
T
A
C
K
A
C
K
A
C
K
Device
Address
O
P
D
SDA LINE
R A
/ C
N
O
Data n
Data n + 1
Data n + 2
Data n + x
W K
A
C
K
9.1
Power Recommendation
The device internal POR (Power-On Reset) threshold is just below the minimum operating voltage of the device.
Power shall rise monotonically from 0.0Vdc to full VCC in less than 1ms. Hold at full VCC for at least 100μs before
the first operation. Power shall drop from full VCC to 0.0Vdc in less than 1ms. Power dropping to a non-zero level
and then slowly going to zero is not recommended. Power shall remain off (0.0Vdc) for 0.5s minimum. Please
consult Atmel if your power conditions do not meet the above recommendations.
14
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
10. Ordering Information
10.1 Ordering Code Details
A T 2 4 C 1 2 8 C - S S P D - T
Atmel Designator
Shipping Carrier Option
B or blank = Bulk (Tubes)
T
E
= Tape and Reel, Standard Quantity Option
= Tape and Reel, Expanded Quantity Option
Product Family
Operating Voltage
24C = Standard I2C Serial EEPROM
D
= 2.5V to 5.5V
= 1.7V to 5.5V
M
Package Device Grade or
Wafer/Die Thickness
Device Density
128 = 128 kilobit
256 = 256 kilobit
9
= Lead-free / Halogen-free
Automotive (-40°C to +85°C)
K(1) = Lead-free / Halogen-free
Automotive (-40°C to +105°C)
P
= Lead-free / Halogen-free
Automotive (-40°C to +125°C)
Device Revision
Package Option
SS = JEDEC SOIC
X
= TSSOP
MA = UDFN
Notes: 1. Contact Sales for Grade 2 Availability
Atmel AT24C128C/256C Automotive [DATASHEET]
15
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
10.2 Ordering Code Information
10.2.1 Automotive Grade 1, VCC = 2.5V to 5.5V
Delivery Information
Atmel Ordering Code
AT24C128C-SSPD
Lead Finish
Package
8S1
Form
Quantity
Operation Range
Bulk (Tubes)
Tape and Reel
Bulk (Tubes)
Tape and Reel
100 per Tube
AT24C128C-SSPD-T
AT24C128C-XPD
4,000 per Reel
100 per Tube
Automotive
Temperature
(-40C to 125C)
NiPdAu
(Lead-free/Halogen-free)
8X
AT24C128C-XPD-T
AT24C128C-MAPD-T
AT24C128C-MAPD-E
5,000 per Reel
5,000 per Reel
15,000 per Reel
8MA2
Tape and Reel
AT24C256C-SSPD
AT24C256C-SSPD-T
AT24C256C-XPD
Bulk (Tubes)
Tape and Reel
Bulk (Tubes)
Tape and Reel
100 per Tube
4,000 per Reel
100 per Tube
8S1
8X
Automotive
Temperature
(-40C to 125C)
NiPdAu
(Lead-free/Halogen-free)
AT24C256C-XPD-T
AT24C256C-MAPD-T
AT24C256C-MAPD-E
5,000 per Reel
5,000 per Reel
15,000 per Reel
8MA2
Tape and Reel
Package Type
8S1
8X
8-lead, 0.150" wide, Plastic Gull Wing Small Outline (JEDEC SOIC)
8-lead 4.4mm body, Plastic Thin Shrink Small Outline (TSSOP)
8MA2
8-pad, 2.00mm x 3.00mm body, 0.50mm pitch, Ultra Thin, Dual No Lead (UDFN)
16
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
10.2.2 Automotive Grade 3, VCC = 1.7V to 5.5V
Atmel Ordering Code
AT24C128C-SS9M
Lead Finish
Package
8S1
Form
Quantity
Operation Range
Bulk (Tubes)
100 per Tube
AT24C128C-SS9M-T
AT24C128C-X9M
Tape and Reel
Bulk (Tubes)
Tape and Reel
4,000 per Reel
100 per Tube
Automotive
Temperature
(-40C to 85C)
NiPdAu
(Lead-free/Halogen-free)
8X
AT24C128C-X9M-T
AT24C128C-MA9M-T
AT24C128C-MA9M-E
5,000 per Reel
5,000 per Reel
15,000 per Reel
8MA2
Tape and Reel
AT24C256C-SS9M
AT24C256C-SS9M-T
AT24C256C-X9M
Bulk (Tubes)
Tape and Reel
Bulk (Tubes)
Tape and Reel
100 per Tube
4,000 per Reel
100 per Tube
8S1
8X
Automotive
Temperature
(-40C to 85C)
NiPdAu
(Lead-free/Halogen-free)
AT24C256C-X9M-T
AT24C256C-MA9M-T
AT24C256C-MA9M-E
5,000 per Reel
5,000 per Reel
15,000 per Reel
8MA2
Tape and Reel
Package Type
8S1
8X
8-lead, 0.150" wide, Plastic Gull Wing Small Outline (JEDEC SOIC)
8-lead 4.4mm body, Plastic Thin Shrink Small Outline (TSSOP)
8MA2
8-pad, 2.00mm x 3.00mm body, 0.50mm pitch, Ultra Thin, Dual No Lead (UDFN)
Atmel AT24C128C/256C Automotive [DATASHEET]
17
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
10.3 Product Markings
AT24C128C and AT24C256C: Package Marking Information
8-lead SOIC
8-lead TSSOP
8-pad UDFN
2.0 x 3.0 mm Body
AT$YWW
AAAAAAA
###
ATML$YWW
###%
AAAAAAAA
###% @
$%@
YTC
@
Note 1:
designates pin 1
Note 2: Package drawings are not to scale
Catalog Number Truncation
AT24C128C
AT24C256C
Truncation Code ###: 2DC
Truncation Code ###: 2EC
Date Codes
% = Voltages
Y = Year
6: 2016
7: 2017
8: 2018
9: 2019
M = Month
A: January
B: February
...
WW = Work Week of Assembly
D: 2.5V minimum
M: 1.7V minimum
0: 2020
1: 2021
2: 2022
3: 2023
02: Week 2
04: Week 4
...
L: December
52: Week 52
Country of Assembly
Lot Number
AAA...A = Atmel Wafer Lot Number
$ = Grade/Lead Finish Material
@ = Country of Assembly
P: Automotive Grade 1/NiPdAu
K: Automotive Grade 2/NiPdAu
9: Automotive Grade 3/NiPdAu
Trace Code
Atmel Truncation
XX = Trace Code (Atmel Lot Numbers Correspond to Code)
Example: AA, AB.... YZ, ZZ
AT: Atmel
ATM: Atmel
ATML: Atmel
3/14/2016
REV.
TITLE
DRAWING NO.
24C128-256CAM, AT24C128C and AT24C256C Automotive
Package Marking Information
Package Mark Contact:
DL-CSO-Assy_eng@atmel.com
24C128-256CAM
C
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Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
11. Packaging Information
11.1 8S1 — 8-lead JEDEC SOIC
C
1
E
E1
L
N
Ø
TOP VIEW
END VIEW
e
b
COMMON DIMENSIONS
(Unit of Measure = mm)
A
MIN
–
0.10
MAX
1.75
0.25
NOM
–
–
NOTE
SYMBOL
A1
A
A1
b
0.31
0.17
–
0.51
0.25
C
D
E
E1
e
–
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
–
D
SIDE VIEW
Notes: This drawing is for general information only.
Refer to JEDEC Drawing MS-012, Variation AA
for proper dimensions, tolerances, datums, etc.
L
0.40
0°
1.27
8°
Ø
–
3/6/2015
DRAWING NO. REV.
8S1
TITLE
GPC
8S1, 8-lead (0.150” Wide Body), Plastic Gull Wing
Small Outline (JEDEC SOIC)
SWB
H
Package Drawing Contact:
packagedrawings@atmel.com
Atmel AT24C128C/256C Automotive [DATASHEET]
19
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
11.2 8X — 8-lead TSSOP
C
1
Pin 1 indicator
this corner
E1
E
L1
N
L
Top View
End View
A
b
A1
COMMON DIMENSIONS
(Unit of Measure = mm)
e
A2
D
SYMBOL
MIN
-
NOM
-
MAX
1.20
0.15
1.05
3.10
NOTE
2, 5
A
Side View
A1
A2
D
0.05
0.80
2.90
-
Notes: 1. This drawing is for general information only.
1.00
Refer to JEDEC Drawing MO-153, Variation AA, for proper
dimensions, tolerances, datums, etc.
3.00
2. Dimension D does not include mold Flash, protrusions or gate
burrs. Mold Flash, protrusions and gate burrs shall not exceed
0.15mm (0.006in) per side.
E
6.40 BSC
4.40
E1
b
4.30
0.19
4.50
0.30
3, 5
4
3. Dimension E1 does not include inter-lead Flash or protrusions.
Inter-lead Flash and protrusions shall not exceed 0.25mm
(0.010in) per side.
4. Dimension b does not include Dambar protrusion.
Allowable Dambar protrusion shall be 0.08mm total in excess
of the b dimension at maximum material condition. Dambar
cannot be located on the lower radius of the foot. Minimum
space between protrusion and adjacent lead is 0.07mm.
5. Dimension D and E1 to be determined at Datum Plane H.
0.25
e
0.65 BSC
0.60
L
0.45
0.09
0.75
0.20
L1
C
1.00 REF
-
2/27/14
TITLE
GPC
TNR
DRAWING NO.
REV.
8X, 8-lead 4.4mm Body, Plastic Thin
Shrink Small Outline Package (TSSOP)
8X
E
Package Drawing Contact:
packagedrawings@atmel.com
20
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
11.3 8MA2 — 8-pad UDFN
E
1
8
7
6
5
Pin 1 ID
2
3
4
D
C
TOP VIEW
E2
SIDE VIEW
A2
A
C
A1
b (8x)
8
1
2
3
4
COMMON DIMENSIONS
(Unit of Measure = mm)
7
6
5
Pin#1 ID
D2
MIN
0.50
MAX
0.60
NOM
0.55
NOTE
SYMBOL
A
A1
A2
D
0.0
-
0.02
-
0.05
0.55
2.10
1.60
3.10
1.40
0.30
e (6x)
L (8x)
BOTTOM VIEW
K
1.90
1.40
2.90
1.20
0.18
2.00
D2
E
1.50
3.00
Notes:
1. This drawing is for general information only. Refer to
Drawing MO-229, for proper dimensions, tolerances,
datums, etc.
E2
b
1.30
0.25
3
2. The Pin #1 ID is a laser-marked feature on Top View.
3. Dimensions b applies to metallized terminal and is
measured between 0.15 mm and 0.30 mm from the
terminal tip. If the terminal has the optional radius on
the other end of the terminal, the dimension should
not be measured in that radius area.
C
0.152 REF
0.40
L
0.35
0.20
0.45
-
e
0.50 BSC
-
K
4. The Pin #1 ID on the Bottom View is an orientation
feature on the thermal pad.
11/2/15
TITLE
DRAWING NO.
REV.
GPC
8MA2, 8-pad 2 x 3 x 0.6mm Body, Thermally
Enhanced Plastic Ultra Thin Dual Flat No-Lead
Package (UDFN)
YNZ
8MA2
H
Package Drawing Contact:
packagedrawings@atmel.com
Atmel AT24C128C/256C Automotive [DATASHEET]
21
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
12. Revision History
Doc. Rev.
Date
Comments
Added the Automotive Grade 2 and 3 and UDFN options and table of contents
8818C
07/2016
Updated the “Software Reset” section, part marking, 8S1 package drawing, disclaimer page,
template and reorganize document.
Removed preliminary status.
8818B
8818A
10/2012
04/2012
Updated 8X — TSSOP package drawing and Atmel logos and disclaimer/copy page.
Initial document release
22
Atmel AT24C128C/256C Automotive [DATASHEET]
Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016
X X
X X X X
Atmel Corporation
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T: (+1)(408) 441.0311
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© 2016 Atmel Corporation. / Rev.: Atmel-8818C-SEEPROM-AT24C128C-256C-Auto-Datasheet_072016.
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