SCL3711
R
EFERENCE
M
ANUAL
41
6.4.1.3. Read Byte (READ)
Description
This command reads a single EEPROM memory byte within the static memory model
area of blocks 0x0-0xE.
Format
CLA
INS
P1
P2
P3
Data
0xFF
0x54
0x00
Byte Address
0x00
-
Where P2 is coded as follow
Bit #
Value
Description
b0 – b2
Byte number to be addressed(value between 0x0 and 0x7)
b3 – b6
Block number (value between 0x0 and 0xE)
b7
(0)b
Number of the key to be used for authentication
Response
Data
SW1 SW2
1 byte of data
0x90 0x00
6.4.1.4. Write-Erase Byte (WRITE-E)
Description
This commands erases and then writes the value of an individual memory byte within the static
memory model area of blocks 0x0-0xE.
Format
CLA
INS
P1
P2
P3
Data
0xFF
0x56
0x00
Byte Address
0x01
1 byte of data to be written
Where P2 is coded as follow
Bit #
Value
Description
b0 – b2
Byte number to be addressed(value between 0x0 and 0x7)
b3 – b6
Block number (value between 0x0 and 0xE)
b7
(0)b
Number of the key to be used for authentication
Response
Data
SW1 SW2
Byte value that has been written
0x90 0x00