ACR1281U-C1 – Application Programming Interface
Version 1.08
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Page 27 of 96
5.1.5.3.
Read presentation error counter memory card (for SLE4428 and
SLE5528 only)
This command reads the presentation error counter for the secret code.
Command
Command
Class INS
P1
P2
MEM_L
Read Presentation Error Counter
FFh
B1h 00h 00h
03h
Response
Response
ErrCnt
Dummy 1
Dummy 2
SW1
SW2
Result
Where:
ErrCnt
(1 byte)
The value of the presentation error counter
FFh = indicates the verification is correct
00h = indicates the password is locked (exceeding the maximum
number of retries)
Other values indicate the verification failed.
Dummy 1, Dummy 2
(2 bytes)
Dummy data read from the card
SW1 SW2
= 90 00h if the operation is completed successfully.
5.1.5.4.
Read protection bit
This command reads the protection bit.
Command
Command
Class
INS
Byte Address
MEM_L
MSB
LSB
Read Protection Bit
FFh
B2h
Where:
MSB Byte Address
(1 byte)
The memory address location of the memory card
= 0000 00 A9 A8b
LSB Byte Address
(1 byte)
The memory address location of the memory card
= A7 A6 A5 A4 A3 A2 A1 A0b