User's Manual

ACR1281U
 Advanced Card Systems Ltd. Page 63 of 81
Pseudo-APDU
CLA INS P1 Byte
Address
MEM_L Byte 1 .... .... Byte N
FF
H
D0
H
00
H
Byte Address = Memory address location of the memory card.
MEM_L Length of data to be written to the memory card.
BYTE Byte value to be written to the card
• Response data format
SW1 SW2
• SW1, SW2 = 90 00 if no error
8.4 Erase Scratch Pad Memory Card
To erase the data of the scratch pad memory of the inserted card. All memory bits inside the
scratch pad memory will be programmed to the state of ‘1’.
• Command format
Pseudo-APDU
CLA INS P1 Byte
Address
MEM_L
FF
H
D2
H
00
H
00
H
Byte Address
= Memory byte address location of the scratch pad. Typical value is 0x02.
• Response data format
SW1 SW2
• SW1, SW2 = 90 00 if no error
8.5 Verify User Code
To submit User Code (2 bytes) to the inserted card. User Code is to enable the memory access of
the card.
The following actions are executed:
- present the specified code to the card
- search a '1' bit in the presentation error counter and write the bit to '0'
- erase the presentation error counter. The User Error Counter can be erased when
the submitted code is correct.
• Command format