ACR1281U-C1 – Application Programming Interface
Version 1.08
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5.1.6.7.
Present code memory card (for SLE4442 and SLE5542 only)
This command submits the secret code to the memory card to enable the write operation with the
SLE4442 and SLE5542 card. The following actions are executed:
1. Search a ‘1’ bit in the presentation error counter and write bit ‘0’.
2. Present the specified code to the card.
3. Try to erase the presentation error counter.
Command
Command
Class INS
P1
P2
MEM_L
Code
Byte 1
Byte 2
Byte 3
Present Code
Memory Card
FFh
20h 00h 00h
03h
Where:
Code
(3 bytes)
Secret code (PIN)
Response
Response
Data Out
Result
SW1
ErrorCnt
Where:
ErrorCnt
(1 byte)
Error Counter
07h = indicates the verification is correct.
00h = indicates the password is locked (exceeding the maximum number of
retries).
Other values indicate the verification failed.