
AT88RF1354 SPI User Guide For CryptoRF
®
3.10
Write System Zone Command [$c4]
The Write System Zone command writes data to the configuration memory. This command is
also used to program the security fuses.
3.10.1 Command Format
PICC CID
$4
PICC Status Code
Write System Zone ($c4)
PARAM
EREG Register Byte
PICC Bytes Received
ADDR
"L", Bytes Written - 1
Data 1
Data 2
ISTAT stays Low
Get six bytes
RF Transmit Command
PARAM
Data "L"
Data "L + 1"
ISTAT goes High
Response Processing
Response Bytes
PICC ACK/NACK
Host
Reader
Send twelve bytes
TX Data ($03)
Bytes sent to PICC
PARAM
FWI
PICC
Command Processing
RF Transmit Response
Command Processing
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