
AT88RF1354 SPI User Guide For CryptoRF
®
3.8
Write User Zone Command [$c3]
The Write User Zone command writes data into the currently selected User Zone. See Write
User Zone (Large Memory) command for the AT88SC6416CRF write command information.
3.8.1
Command Format
PICC CID
$3
PICC
Command Processing
RF Transmit Response
Command Processing
Host
Reader
Send twelve bytes
TX Data ($03)
Bytes sent to PICC
PARAM
FWI
ISTAT stays Low
Get six bytes
RF Transmit Command
$00
Data "L"
Data "L + 1"
ISTAT goes High
Response Processing
Response Bytes
PICC ACK/NACK
PICC Status Code
Write Zone ($c3)
PARAM
EREG Register Byte
PICC Bytes Received
ADDR
"L", Bytes Written - 1
Data 1
Data 2
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