T5557 Datasheet, PDF (11/30 Pages) ATMEL Corporation – Multifunctional 330-bit Read/Write RF-Identification IC

Figure 14. Anticollision Procedure Using AOR Mode
Reader
init tags with
AOR = '1' , PWD = '1'
Tag
wait for t_w > 2.5ms
Field OFF => ON
POWER ON RESET
read configuration
enter AOR mode
"Select a single tag"
send OPCODE + PWD
=> "wake up command"
wait for OPCODE + PWD
=> "wake up command"
Receive damping ON
decode data
NO
Password correct ?
YES
send block 1...MAXBLK
NO
all tags read ?
YES
T5557
EXIT
11
4517E–RFID–02/03