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ACR33U-A1 SmartDuo Reference Manual
Version 1.00
Page 50 of 56
www.acs.com.hk
8.2.13.2. READ_MEMORY_CARD
Command format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA
INS
P1
Byte
Address
MEM_L
FF
H
B0
H
00
H
Byte Address
= Memory address location of the memory card.
MEM_L
Length of data to be read from the memory card.
Response data format (abData field in the RDR_to_PC_DataBlock)
BYTE 1
…
…
BYTE N
SW1
SW2
BYTE x
Data read from memory card
SW1, SW2
=
90
H
00
H
if no error
8.2.13.3. WRITE_MEMORY_CARD
To write data to the specified address of the inserted card. The byte is written to the card with LSB
first, i.e., the bit at card address 0 is regarded as the LSB of byte 0.
The byte at the specified card address is not erased prior to the write operation and, hence, memory
bits can only be programmed from '1' to '0'.
Command format (abData field in the PC_to_RDR_XfrBlock)
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 (abData field in the RDR_to_PC_DataBlock)
SW1
SW2
SW1, SW2
=
90
H
00
H
if no error