E5551 데이터 시트보기 (PDF) - Temic Semiconductors

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E5551

Standard R/W Identification IC with Anticollision

Temic Semiconductors 

VCoil 1 – Coil 2

e5551

Modulation on

POR

Loading block 0

No modulation OP-code (’10’) followed by valid password

(STOP = 0, AOR = 1)

Figure 13. Answer-on-request (AOR) mode

BASE station

init tags with

AOR = ’1’, PWD = ’1’, Stop = ’0’

Field OFF –> ON

TAG

wait for t W > 2.5ms

POWER ON RESET

read configuration

wait for OPCODE + PWD

(== wake up command)

”select single tag”

send OPCODE + PWD

(== wake up command)

decode data

send stop command

NO

all tags read ?

YES

write damping

NO

PWD correct ?

YES

send block 1...MAXBLK

until STOP command

enter AOR mode

internal reset sequence

Rev. A2, 19-Apr-00

EXIT

Figure 14. Anticollision procedure

9 (21)

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