
AT88RF1354 SPI User Guide For CryptoRF
®
3.4
HLTB Command [$50]
The HLTB command places an Active State PICC in the Halt State, where it is not allowed to
answer an REQB command. The command and response are ISO/IED 14443-3 compliant.
3.4.1
Command Format
$00
PUPI 0
PARAM
EREG Register Byte
PICC Bytes Received
PUPI 2
PUPI 3
Bytes sent to PICC
PARAM
FWI
ISTAT stays Low
Get fourteen bytes
RF Transmit Command
PUPI 1
ISTAT goes High
Response Processing
Response Bytes
HLTB ($50)
PICC
Command Processing
RF Transmit Response
Command Processing
Host
Reader
Send nine bytes
TX Data ($03)
3-6
8586A—RFID—5/09