AT88SC0104CRF_08 Datasheet, PDF (21/108 Pages) ATMEL Corporation – CryptoRF Specification

AT88SC0104/0204/0404/0808/1616/3216/6416CRF
4.8 Read User Zone Command [$c2]
The Read User Zone command reads data from the currently selected User Zone. See Read
User Zone (Large Memory) command for the AT88SC6416CRF read command information.
Reader
PICC
Command >
CID
$2
$00
ADDR
“L”
CRC1
CRC2
Echo Command >
CID
$2
NACK
STATUS
CRC1
CRC2
FAILURE RESPONSE
< Error Code
Echo Command >
4.8.1 Operation
CID
$2
ACK
DATA 1
DATA 2
..........
DATA “L”
DATA “L+1”
STATUS
CRC1
CRC2
SUCCESS RESPONSE
< Status Code
The Read User Zone command reads data from the device's currently selected User Zone.
The data byte address is internally incremented as each byte is read from memory. If the data
byte address increments beyond the end of the current zone during a read, then the address will
"roll over" to the first byte of the same zone. Only PICCs in the Active State are permitted to
answer this command.
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5276A–RFID–07/08