AT88RF020-WL-82 [ATMEL]

Consumer Circuit, WAFER-9;
AT88RF020-WL-82
型号: AT88RF020-WL-82
厂家: ATMEL    ATMEL
描述:

Consumer Circuit, WAFER-9

文件: 总14页 (文件大小:188K)
中文:  中文翻译
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Features  
13.56 MHz RFID Chip for Cards or Tags  
2048-bit Read/Write RFID EEPROM  
ISO 14443-2 Type B Compliant  
Full ISO 14443-3 Compliant Anticollision  
100,000 Write Cycle Reliability  
3 ms Write Time  
Password and Lockwrite Protection  
82 pF Tuning Capacitor  
0 – 70°C Operation  
13.56 MHz,  
2048-bit RFID  
EEPROM  
Description  
The AT88RF020 is a low-end 13.56 MHz RFID (Radio Frequency IDentification)  
device that includes an on-chip EEPROM-based (nonvolatile) memory. The wireless  
interface complies with Type B operation of ISO/IEC 14443. The specific sections of  
compliance are 14443-1, as well as 14443-2:1999(E) (dated 5/2/00) and 14443-  
3:2000(E) (dated 7/13/00).  
AT88RF020  
This device is designed to be used in applications where one or more RFID devices  
will be simultaneously placed within an intelligent reader/writer RF field. Communica-  
tion between the RF reader/writer and this device will take place through the use of  
the featured anticollision command set supported by this device.  
The memory contains a total of 2048 bits, organized as 32 64-bit pages. Write opera-  
tions are designed to complete in less than three milliseconds (ms). The endurance  
rating for the memory is 100,000 write cycles per byte.  
This device supports these security features: password checking, data locking, a one-  
way counter and a guaranteed unique serial number.  
The AT88RF020 includes an on-chip internal tuning capacitor that enables it to oper-  
ate with a single external coil antenna. This antenna completes the RFID channel.  
Figure 1. Block Diagram  
Bridge  
Regulator  
Rectifier  
EEPROM  
Clock  
Extraction  
Control  
Data  
Modulation  
Rev. 2010B–RFID–03/02  
All bits are sent to or read from the chip least significant bit first. Bit fields listed in this  
document are listed with the LSB on the left and the MSB on the right. Multibyte informa-  
tion is sent to the chip least significant byte first.  
The first byte sent to the chip is stored in memory at the lowest address, and the internal  
address is incremented for subsequent bytes. Information is read from the memory and  
transmitted by the chip in exactly the same order in which it was written: the first bit writ-  
ten is the first bit read.  
This specification follows the nomenclature found within the ISO/IEC 14443 document.  
Proximity Coupling Device (PCD) is the reader/writer, and Proximity Integrated Circuit  
Card (PICC) is the tag/card. ETU refers to Elementary Time Unit, which is the time  
required to transmit or receive one bit. One ETU is equal to 128 carrier cycles (9.439  
µs). RFU refers to any feature, item, bit field or bit that is held as Reserved for Future  
Use. When the reader/writer sends data to this device, RFU bits should always be “0”.  
When this device sends data to the reader/writer, RFU bits are undefined.  
Memory Map  
The memory array within this device is organized as shown in Table 1.  
Table 1. Memory Map  
Byte 0  
Byte 1  
Byte 2  
Byte 3  
Byte 4  
Byte 5  
LockBits  
Reserved  
Byte 6  
Byte 7  
Page 0  
Pseudo Unique PICC ID  
Application Data  
Page 1  
Page 2  
Signature  
Counter  
Page 3  
Password  
Page 4  
...  
...  
...  
Page 31  
Bytes marked “–” in Table 1 are user-defined and will be set to 0x00 upon shipment from  
Atmel. The chip accesses these bytes using specific commands described later in this  
document.  
A total of 1904 bits (238 bytes) are available for user-defined purposes, including the  
Reserved and Signature fields but excluding the PUPI, LockBits, Counter and Password  
fields in the above memory map.  
The fields named above are defined as follows:  
Pseudo Unique PICC Identifier: This PUPI field is a unique serial number permanently  
written into the device’s nonvolatile memory at the Atmel factory during wafer probe/test.  
It cannot be modified and is guaranteed to be unique for all AT88RF020 devices. Cus-  
tomers desiring serial numbers longer than 32 bits are expected to use other locations  
within the memory, including the Reserved field within Page 1.  
Application Data: This field is transmitted unmodified from the card to the reader/writer  
as part of the ATQB command response.  
Counter: This field is automatically incremented by the device whenever the COUNT  
instruction is executed. It is factory set to the value of zero upon shipment from Atmel.  
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AT88RF020  
2010B–RFID–03/02  
AT88RF020  
Signature: This field is written unmodified into the first six bytes of Page 2 via the  
COUNT instruction. It is expected that this value will be related to the count and may be  
encrypted by the reader/writer. In this manner, the Counter and Signature fields together  
can provide an additional level of security from tampering.  
Pages 0, 1 and 2 can always be read by the system; Page 3 may never be read by the  
system; and all remaining pages can be read only after the proper password has been  
sent to the chip. The LockBits field within Page 0 can be modified only through the use  
of the LOCK command and only after the proper password has been sent to the chip.  
The contents of Page 2 can only be modified using the COUNT command—again, only  
after the proper password has been sent to the chip.  
All other pages (1 and 3 through 31) can be written to only after the proper password  
has been validated by the chip. The first four bytes of Page 0 comprise the serial num-  
ber (PUPI) and, although the adjacent LockBits field is updateable, the serial number  
can never be changed during any kind of operation.  
Communications  
The electrical signaling of the chip is fully compatible with ISO 14443-2, “Radio Fre-  
quency Power and Signal Interface,” version 1999(e) for Type B only. Anticollision  
operation and frame formatting is compatible with ISO 14443-3 Type B, “Initialization  
and Anticollision,” version 2000(e), Type B only.  
Command/Data  
Transmission Frame  
All data sent between the PICC and PCD is sent as characters (see ISO 14443-3, sec-  
tion 7.1.1). The character is composed of a start bit (logic “0”), 8 bits of data and a stop  
bit (logic “1”).  
Between characters is an extra guard time (EGT) that must not exceed 6 ETUs (~57  
microseconds (µs)) for data sent to the PICC and will be two ETUs for data sent to the  
PCD (see ISO 14443-3, section 7.1.2).  
The PICC will automatically resynchronize character reception (internal clocks) with the  
start bit of each incoming character.  
Groups of characters exchanged between the PCD and PICC comprise a frame, which  
is delimited by a Start of Frame (SOF) and an End of Frame (EOF) signal protocol (see  
ISO 14443-3, sections 7.1.3–7.1.5).  
After the READ command has been received by the PICC, the PICC will respond with  
the data frame following a delay of 8 ETUs (~75.5 µs) and transmit a subcarrier for a  
period of 10 ETUs (~94.4 µs) with no phase changes (see ISO 14443-3, section 7.1.6,  
and ISO 14443-2, section 9.2.5.).  
Note:  
This device ignores attempts to reduce the minimum TR0 and TR1 values from the ISO  
14443-2 defaults as may be specified by the PCD in the ATTRIB command (see ISO  
14443-3, sections 7.10.3.1 and 7.10.3.2.).  
CRC  
A 2-byte CRC code is included in all frame transmissions. The CRC polynomials are  
defined as:  
x
16 + x12 + x5 + x0  
This is a hex polynomial of 1021. The CRC register is initialized to 0xFFFF. When  
receiving information from the system, the device computes the CRC on the incoming  
command, data and CRC bytes (start/stop bits, SOT, EOT and EGT are ignored). When  
the last bit of the CRC has been received, the value in the CRC register should be  
0x0000. When the device transmits data, the CRC is computed based on all outgoing  
data bits.  
3
2010B–RFID–03/02  
Anticollision  
Anticollision is implemented as per ISO 14443-3, Type B (see ISO 14443-3, sections 7.3  
and 7.4). There are four primitive commands that support the anticollision scheme:  
REQB/WUPB, SlotMARKER, ATTRIB and HLTB.  
REQB/WUPB Command  
This 5-byte command (see ISO 14443-3, section 7.7) is used for the PCD to probe the  
field for PICCs or to wake up PICCs that are in the HALT state. The first byte must be a  
fixed 0x05. This chip will respond only to values of 0x00 or 0x01 in the second (AFI)  
byte. Bit 3 of the third byte is used to select between REQB and WUPB commands,  
while Bits 0–2 are used to set N, which is used for the command response (ATQB). If  
the PICC receives a WUPB command with an invalid AFI code, then it will remain in the  
HALT state.  
When the PICC receives one of these commands properly encoded, it will generate a  
random number (R) of up to four bits, according to the value of N passed by the PCD  
and specified in Table 13 of ISO 14443-3 and in Table 2 on page 4. If N = 1 or the ran-  
dom number generator selects R = 1, then the PICC will send an ATQB and listen for  
REQB/WUPB, ATTRIB and HLTB commands. Otherwise, it will wait for the Slot-  
MARKER command that matches the value R selected by the random number  
generator.  
Table 2. Command Codes  
Binary Code (in cmd)  
N
1
Size of R (in bits)  
000  
100  
010  
110  
001  
1
2
3
4
2
4
8
16  
The response to both of these commands is an ATQB packet. This format is as speci-  
fied in ISO 14443-3, section 7.9.1, with the following values:  
PUPI: As stored in memory (unique serial number)  
Application Data: As stored in memory  
Protocol Info: 0x00, 0x00, 0x41  
(Bit_rate_capability: 106 Kbps only)  
(Max_frame_size: 16)  
(Protocol type: not compliant with 14443-4)  
(FWI: Frame Waiting Time minimal, 4.8 ms)  
(ADC: Application Data Coding is proprietary)  
(FO: Only CID (Card Identifier) supported by PICC)  
ATTRIB Command  
The ATTRIB command is used to select among all the chips that may have responded  
to a given REQB/WUPB command. The chip will respond to ATTRIB commands from  
11 to 16 bytes in length where the 2nd, 3rd, 4th and 5th bytes exactly match the PUPI  
stored in the memory. If the chip responds to the ATTRIB command, it enters the  
ACTIVE state where the data transfer commands described above will be honored.  
4
AT88RF020  
2010B–RFID–03/02  
AT88RF020  
The PICC ignores all the PARAM bytes with the exception of the least significant four  
bits of PARAM4, which are stored within the chip as the CID for future responses. Any  
higher layer INF command is also ignored.  
The PICC response to a valid ATTRIB command is always three bytes long. The first  
byte contains the CID in the lower nibble and 0x0 in the upper nibble. The next two bytes  
are the CRC.  
HLTB Command  
The HLTB command is used to set the PICC to the HALT state, after which only the  
WUPB command will be acknowledged. The format of this 7-byte command is 0x50,  
PUPI (4 bytes), CRC (2 bytes). The chip always responds to a valid HLTB command  
with the 3-byte sequence: 0x00, CRC_0 and CRC_1. The HLTB command is not valid if  
the PICC is in the ACTIVE state (see ISO 14443-3 sections 7.4.7 and 7.12 for additional  
information).  
SlotMARKER Command The SlotMARKER command provides a way for the reader to query those cards for  
which the generated random number R is greater than 1. It is a 3-byte command, the  
last two of which are the CRC bytes. The least significant nibble of the first byte is the  
slot number, and if this matches the generated random number, then the ATQB  
response is generated. The chip will truncate the slot number field to match the value of  
N provided in the REQB command. The most significant nibble of this command is fixed  
at 0xA.  
5
2010B–RFID–03/02  
Figure 2. AT88RF020 Anticollision and State Transition Flow Chart  
Power On  
Reset  
Wait for REQB  
or WUPB  
AFI Match ?  
NO  
YES  
Select Random  
Number "R" in  
Range 1 to "N"  
Is N = 1?  
YES  
NO  
Is R = 1?  
NO  
YES  
Send ATQB  
Response  
Wait for  
Slot Marker = "R"  
REQB or WUPB  
Matched  
Slot  
Marker  
Wait for ATTRIB or HLTB  
with PUPI match  
REQB or WUPB  
ATTRIB  
HLTB  
Send Answer  
to HLTB  
Receive CID  
Assignment  
Send Answer  
to ATTRIB  
ACTIVE  
State  
The AT88RF020 processes the following commands when in the  
ACTIVE state and only when the CID embedded in the command  
matches the CID assigned to the IC :  
DESELECT  
HALT  
State  
READ  
WRITE  
LOCK  
CHECK PASSWORD  
COUNT  
Wait for WUPB  
with AFI match  
DESELECT  
All other commands are ignored when the IC is in the ACTIVE state.  
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AT88RF020  
2010B–RFID–03/02  
AT88RF020  
Data Transfer  
Commands  
The following commands are supported for data transfer when the chip is in the ACTIVE  
state (see ISO 14443-3, section 7.4.7). If the command is properly received (CRC cor-  
rect, legal opcode and address, etc.), the chip will respond either with a NACK  
command, an ACK command or data. Otherwise, the chip will silently wait for a proper  
command. The chip supports additional commands as part of the anticollision sequenc-  
ing; these commands are documented elsewhere in this data sheet. On-chip password  
checking is required for most operations. The coding of these commands is described in  
Table 3 and Table 4 on page 9.  
Below is a description of the individual commands supported.  
READ Command  
WRITE Command  
The addressed 64-bit page referenced in the READ command is returned to the PCD.  
The PICC will respond with the data if the address is correct, the page is readable and  
the password has been sent; otherwise, it will respond with a NACK. Password checking  
is not required to read Pages 0, 1 and 2, but all other pages require a previously exe-  
cuted valid password check to read the chip. There is no byte read capability. Page 3  
(the actual password) can never be read directly and is only accessed internally during  
the PASSWORD command. The chip will NACK any attempt to read Page 3.  
The 64-bit memory page referenced in the WRITE command is written with the data that  
follows the command byte. The chip ignores the upper 3 bits of the byte-wide memory  
address and the lower five bits from the memory address.  
If the target page cannot be written to because the page is read only or is locked, or if  
the chip has not been properly opened to access with a valid password, then a NACK  
command will be issued by the PICC. Otherwise, an ACK command will be transmitted  
after the memory write operation has been completed.  
Reader/writer modulation is prohibited during the memory write time, which is the time  
period between the PCD’s EOF and the issuance of the PICC’s ACK command. This  
period is less than 3 ms and is considered to be an extended TR0 wait interval, as per  
ISO 14443.  
Memory is never modified if a NACK command is issued. Pages 0 and 2 (PUPI, Lock-  
Bits, Signature and Counter) cannot be written with this command. Addressing either  
Page 0 or Page 2 within the WRITE command will result in a NACK command being  
issued by the device.  
LOCK Command  
The LOCK command can be executed only after proper password validation has been  
performed. The LOCK command locks the addressed memory location from future  
changes. The memory location can still be read with proper password validation. The  
last 31 bits of data within the LOCK command are logically ORed within the device with  
the 31-bit value stored within the LockBits field of Page 0 (see Memory Map, Table 1 on  
page 2). The result is then written back into the memory. After the memory has been  
written, an ACK command will be transmitted. A NACK command is issued if the LOCK  
command is attempted without previous password validation.  
If power is interrupted during this write, all bits within LockBits may be set to “1”, and the  
chip may be disabled. The first 33 bits of data sent within the command to the PICC are  
ignored.  
The bits within the LockBits field correspond to the pages within the memory and, if set  
to “1”, prevent all future writes to the corresponding page; i.e., LockBits field bit 6 locks  
Page 6 when it is set to a “1”. There is no mechanism to ever “unlock” a page, so once a  
page is locked, it can never be unlocked and, as such, can never be modified. The 31-  
bit LockBits field is set to all “0”s upon shipment from the factory. Bit 0 of the LockBits  
7
2010B–RFID–03/02  
field is ignored for obvious reasons, since it would normally point to memory Page 0,  
which contains the embedded PUPI (serial number) and the actual LockBits field.  
A command to lock Page 0 with password access will result in an ACK command being  
issued with no other effects, since Page 0 can never be locked. Attempting to lock Page  
0 is not viewed as an error, so the command will be executed in the normal manner.  
CHECK PASSWORD  
Command  
The 64-bit value embedded within the CHECK PASSWORD command is compared to  
the password stored within Page 3 of the memory (See Memory Map, Table 1 on page  
2). If the input password matches the stored password, then the chip will reply with an  
ACK command, and the device will be open to access. If the input password does not  
match the internally stored password, then the chip will reply with a NACK command.  
This command must be executed (and the proper password sent) before most device  
accesses are allowed (some accesses are permitted without password validation). The  
chip will remain accessible until power is removed or an incorrect password is sent to  
the chip. If a subsequent password check fails, the chip will become inaccessible until a  
valid password check is again executed.  
Once the password has been properly acknowledged and device access opened, the  
current password can be changed using the WRITE command. The device will remain  
ACTIVE after the new password has been written until power is removed or until a sub-  
sequent invalid password check occurs.  
The only password that is not allowed is the “all ones” password. If the CHECK PASS-  
WORD command is attempted for an “all ones” password, the device will respond with a  
NACK command. If the “all ones” password is validly programmed into this device using  
the WRITE command, the device will forever be locked out of future password validated  
accesses.  
It is strongly suggested that the “all zeroes” password be avoided since this password is  
considered too simplistic and could represent a security risk. The device is delivered  
with all zeros in the password page.  
DESELECT Command  
COUNT Command  
If the DESELECT command is properly received and the PICC is in the ACTIVE state,  
the PICC will issue an ACK command and enter the HALT state. Its functionality is iden-  
tical to HLTB as described in the anticollision section. A NACK response is never issued  
following this command (see ISO 14443-3, section 7.4.7).  
The COUNT command is used to write Page 2. The first six bytes sent by the PCD  
(referred to as the Signature) are written to the first six bytes of Page 2 unmodified. The  
last two bytes of data sent by the PCD in the COUNT command are only placeholders  
and will be ignored.  
The 16-bit value stored in the counter field of Page 2 is incremented by one each time  
COUNT is executed. Once the value of the counter reaches 0x8000, no further count  
operations will be executed, and Page 2 will be effectively locked against further modifi-  
cation. Password validation must occur before the COUNT command is permitted.  
The chip will compute the new incremented count that will be written into the last two  
bytes of Page 2 immediately following the incoming 6-byte data field. It is expected that  
at least part of the 6-byte value will be the result of an externally computed crypto-  
graphic operation on the new Counter value, thus permitting some degree of transaction  
validation.  
8
AT88RF020  
2010B–RFID–03/02  
AT88RF020  
If the write cannot take place (because Counter has a value of 0x8000, Page 2 is locked  
or no password has been sent), then a NACK command will be issued by the PICC; oth-  
erwise, an ACK command will be transmitted after the write has completed.  
Data Transfer  
Command Formats  
The first byte of each command includes the CID as the least significant nibble followed  
by the command opcode (COP) as the most significant nibble. COP is encoded accord-  
ing to Table 3.  
Table 3. Command Summary  
LSB  
MSB  
Command  
READ  
Description  
0
1
0
0
0
0
0
1
1
1
1
1
1
0
0
1
0
1
0
0
0
0
1
1
64-bit page from memory  
64-bit page to memory  
WRITE  
LOCK  
Data is ORed with existing LockBits value  
CHECK PASSWORD  
DESELECT  
COUNT  
All these commands consist of 12 bytes to be sent to the PICC by the PCD. CID is the  
card ID byte as received by the PICC during the anticollision sequence. The address  
field in the following chart is a 5-bit value, and the device ignores the most significant  
three bits of the byte. Therefore, the device will interpret a value of 0xFF as 0x1F.  
The command bytes are shown in Table 4.  
Table 4. Command Bytes  
Commands  
READ  
1st Byte  
CID | 0x4  
CID | 0x3  
CID | 0x2  
CID | 0x6  
CID | 0xA  
CID | 0xE  
2nd Byte  
Address  
Address  
Ignored  
Ignored  
Ignored  
Ignored  
3rd–10th Bytes  
Ignored  
11th Byte  
CRC_0  
CRC_0  
CRC_0  
CRC_0  
CRC_0  
CRC_0  
12th Byte  
CRC_1  
CRC_1  
CRC_1  
CRC_1  
CRC_1  
CRC_1  
WRITE  
64 bits data  
LOCK  
32 bits ignored, 32 bits data  
64 bits data  
CHECK PASSWORD  
DESELECT  
COUNT  
Ignored  
16 bits ignored, 48 bits data  
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2010B–RFID–03/02  
A valid READ command response is a 12-byte frame sent from the PICC to the PCD  
and is formatted as shown in Table 5.  
Table 5. PICC Frame Format  
Commands  
1st Byte  
2nd Byte  
3rd–10th Bytes  
11th Byte  
12th Byte  
READ  
CID | 0x4  
Address  
64 bits data  
CRC_0  
CRC_1  
Both the ACK and NACK responses consist of a 4-byte frame sent from the PICC to the  
PCD and are formatted as shown in Table 6.  
Table 6. ACK and NACK  
Description  
ACK  
1st Byte  
CID | COP  
CID | COP  
2nd Byte  
0xX0  
3rd Byte  
CRC_0  
CRC_0  
4th Byte  
CRC_1  
CRC_1  
NACK  
0xX1  
There are two parts to the second byte of the ACK and NACK response commands (see  
Table 6): the most significant nibble and the least significant nibble.  
For each command, the most significant nibble is not guaranteed, and therefore the  
reader/writer should mask this field when assessing whether an ACK or a NACK has  
been issued by the PICC. As indicated in Table 6, the least significant nibble of the sec-  
ond byte will always be a “0” for an ACK and a “1” for a NACK.  
For an ACK, the most significant nibble of the second byte will be undefined. For a  
NACK, the most significant nibble of the second byte contains an error feedback code.  
This error code represents the error that caused the NACK response command.  
Table 7. Error Codes  
ACK/NACK 2nd Byte  
Command Decode  
X
0
X
0
X
0
X
1
0
0
0
0
0
0
0
1
ACK, no errors detected  
NACK, attempted write to locked page  
NACK, terminal count reached or attempted  
operation to invalid address  
X
X
1
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
NACK, invalid password attempted  
NACK, low-voltage condition detected  
Electrical  
This device includes a voltage reference to ensure that the chip operates only when the  
power supply voltage on the chip is above a required level of 1.8 – 2.0 volts. Memory  
writes are guaranteed above this voltage level. The on-chip regulator will ensure that the  
VDD voltage will be within the range of 2.1 – 2.5 volts.  
The chip is specified to operate over the temperature range of 0°C to 70°C (junction  
temperature). The coil pads (ac1 and ac2) offer ESD protection at levels greater than 2  
kV.  
The input capacitance of the coil pins will be 82 pf and may vary by 10% over process,  
temperature, voltage and frequency. Internal power supply bypass capacitance is inte-  
grated on the chip.  
10  
AT88RF020  
2010B–RFID–03/02  
AT88RF020  
Package Drawing  
16S2 – SOIC  
C
1
E
H
N
A1  
Top View  
End View  
COMMON DIMENSIONS  
(Unit of Measure = inches)  
e
b
MIN  
MAX  
NOM  
NOTE  
SYMBOL  
A
A
A1  
b
0.0926  
0.0040  
0.0130  
0.0091  
0.3977  
0.2914  
0.3940  
0.0160  
0.1043  
0.0118  
0.0200  
0.0125  
0.4133  
0.2992  
0.4190  
0.050  
D
5
C
D
E
H
L
Side View  
2
3
4
e
0.050 BSC  
Notes: 1. This drawing is for general information only; refer to JEDEC drawing MS-013, Variation AA for additional information.  
2. Dimension D does not include mold Flash, protrusions or gate burrs. Mold Flash, protrusions and gate burrs shall not exceed  
0.15 mm (0.006") per side.  
3. Dimension E does not include inter-lead Flash or protrusion. Inter-lead Flash and protrusions shall not exceed 0.25 mm  
(0.010") per side.  
4. L is the length of the terminal for soldering to a substrate.  
5. The lead width B, as measured 0.36 mm (0.014") or greater above the seating plane, shall not exceed a maximum value of 0.61 mm  
(0.024") per side.  
1/9/02  
TITLE  
DRAWING NO.  
REV.  
A
2325 Orchard Parkway  
San Jose, CA 95131  
16S2, 16-lead, 0.300" Wide Body, Plastic Gull Wing  
Small Outline Package (SOIC)  
16S2  
R
11  
2010B–RFID–03/02  
Mechanical  
Package Sample Pinout  
Pin 1 = AC1  
Pin 16 = AC2  
All other pins should float.  
Pad Information  
The layout of the die is shown in Figure 3 on page 13. The antenna coil contact pads  
(ac1 and ac2) and the test 5, 6 and 7 pad passivation openings are 90x90 microns. The  
antenna coil and test 5, 6 and 7 pads are designed to be compatible with current factory  
production bump mounting processes.  
Ordering Information  
Ordering Code  
Package  
Operation Range  
AT88RF020-WBC-82  
AT88RF020-WC-82  
AT88RF020-WBC-10  
AT88RF020-WC-10  
Bumped Wafer, 82 pf  
Die on Wafer, 82 pf  
Bumped Water, 10 pf  
Die on Wafer, 10 pf  
Commercial  
(0°C to 70°C)  
12  
AT88RF020  
2010B–RFID–03/02  
AT88RF020  
Die Layout  
Figure 3. Die Layout  
AT29654  
.0735" x .0769"  
Test 6  
Test 7  
Overall Die Size:  
Pad Size:  
1.866 mm x 1.953 mm  
73.5 mils x 76.9 mils  
80 µm (square pad)  
3.1 mils  
3.5 mils  
90 µm (octagon pad)  
Pad Location  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
198.44 µm  
645.44 µm  
581.40 µm  
645.44 µm  
102.54 µm  
854.48 µm  
235.68 µm  
854.48 µm  
383.44 µm  
854.48 µm  
533.20 µm  
854.48 µm  
776.80 µm  
732.00 µm  
776.80 µm  
732.00 µm  
805.84 µm  
732.00 µm  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
X=  
Y=  
7.813 mils  
AC1  
25.411 mils  
22.890 mils  
25.411 mils  
4.037 mils  
33.641 mils  
9.279 mils  
33.641 mils  
15.096 mils  
33.641 mils  
20.992 mils  
33.641 mils  
30.583 mils  
28.819 mils  
30.583 mils  
28.819 mils  
31.726 mils  
28.819 mils  
AC2  
Test 1  
Test 2  
Test 3  
Test 4  
Test 5  
Test 6  
Test 7  
13  
2010B–RFID–03/02  
Atmel Headquarters  
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Corporate Headquarters  
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TEL 1(408) 441-0311  
FAX 1(408) 487-2600  
Memory  
RF/Automotive  
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TEL 1(408) 436-4270  
FAX 1(408) 436-4314  
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Postfach 3535  
74025 Heilbronn, Germany  
TEL (49) 71-31-67-0  
FAX (49) 71-31-67-2340  
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Microcontrollers  
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CH-1705 Fribourg  
Switzerland  
TEL (41) 26-426-5555  
FAX (41) 26-426-5500  
Atmel Corporate  
Atmel Colorado Springs  
1150 East Cheyenne Mtn. Blvd.  
Colorado Springs, CO 80906  
TEL 1(719) 576-3300  
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San Jose, CA 95131  
TEL 1(408) 436-4270  
FAX 1(408) 436-4314  
FAX 1(719) 540-1759  
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Room 1219  
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TEL (852) 2721-9778  
ASIC/ASSP/Smart Cards  
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Zone Industrielle  
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TEL (33) 4-42-53-60-00  
FAX (33) 4-42-53-60-01  
Japan  
Atmel Japan K.K.  
9F, Tonetsu Shinkawa Bldg.  
1-24-8 Shinkawa  
Chuo-ku, Tokyo 104-0033  
Japan  
Atmel Colorado Springs  
1150 East Cheyenne Mtn. Blvd.  
Colorado Springs, CO 80906  
TEL 1(719) 576-3300  
TEL (81) 3-3523-3551  
FAX (81) 3-3523-7581  
FAX 1(719) 540-1759  
Atmel Smart Card ICs  
Scottish Enterprise Technology Park  
Maxwell Building  
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FAX (44) 1355-242-743  
e-mail  
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Web Site  
http://www.atmel.com  
© Atmel Corporation 2002.  
Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty  
which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors  
which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does  
not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted  
by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical  
components in life support devices or systems.  
ATMEL® is the registered trademark of Atmel.  
IECis a trademark of the International Electrontechnical Commission. ISO® is a registered trademark of  
the International Organization for Standardization. ISO/IEC 1443 can be purchased at http://www.iso.ch  
or http://www.iec.ch  
Printed on recycled paper.  
Other terms and product names may be the trademarks of others.  
2010B–RFID–03/02  

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