Write_Memory_Card; Write_Protection_Memory_Card - ACS ACR 38 Reference Manual

Response data format
Header Status Data length
01
H
BYTE x Data read from memory card
PROT y Bytes containing the protection bits from protection memory
SW1, SW2 = 90 00
H
The arrangement of the protection bits in the PROT bytes is as follows:
PROT 1
P8 P7 P6 P5 P4 P3
Px is the protection bit of BYTE x in the response data
'0' byte is write protected
'1' byte can be written

WRITE_MEMORY_CARD

Command format
Header Instruction
01 A0
H
Byte Address = A A
7 6
LEN = 5 + MEM_L
MEM_L Length of data to be written to the memory card.
Byte x Data to be written to the memory card.
Response data format
SW1, SW2 = 90 00
H

WRITE_PROTECTION_MEMORY_CARD

Each of the bytes specified in the command is internally in the card compared with the byte stored at the specified address
and if the data matches, the corresponding protection bit is irreversibly programmed to '0'.
ACR38 Reference Manual
Version 2.2 January 2008
A C R 3 8 S m a r t C a r d R e a d e r / W r i t e r
BYTE 1 ... ...
LEN
if no error
H
PROT 2
P2 P1 P16 P15 P14 P13
Data length
LEN CLA
MSB LSB
FF
H H
A A A A A A is the memory address location of the memory card.
5 4 3 2 1 0 b
Header Status
01
H
if no error
H
BYTE N PROT 1 PROT 2
P12 P11 P10 P9 .. .. ..
Data
INS P1 Byte MEM_L
Address
D0 00
H H
Data length SW1 SW2
LEN
PROT3 PROT 4 SW1 SW2
...
.. .. .. P18 P17
Byte 1 .... .... Byte N
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