SLE 4442 M3.2 Infineon Technologies, SLE 4442 M3.2 Datasheet - Page 20

• Manufacturer Part Number: SLE 4442 M3.2
• Description: IC EEPROM 256BYTE M3.2 PKG
• Manufacturer: Infineon Technologies

Specifications of SLE 4442 M3.2

• Applications: *
• Package / Case: M3.2 Chip Card Module
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Mounting Type: -
• Other names: SLE4442M3.2; SP000067536

2.3.4 Write Protection Memory (SLE 4432 and SLE 4442)
The execution of this command contains a comparison of the entered data byte with the assigned
byte in the EEPROM. In case of identity the protection bit is written thus making the data information
unchangeable. If the data comparison results in data differences writing of the protection bit will be
suppressed. Execution times and required clock pulses see UPDATE MAIN MEMORY.
Address
(decimal)
255
32
31
3
2
1
0
Command: WRITE PROTECTION MEMORY
Binary
Hexadecimal
Semiconductor Group
:
:
Main Memory
Data Byte 255 (D7 … D0) –
:
Data Byte 32 (D7 … D0)
Data Byte 31 (D7 … D0)
:
Data Byte 3 (D7 … D0)
Data Byte 2 (D7 … D0)
Data Byte 1 (D7 … D0)
Data Byte 0 (D7 … D0)
B7
0
B6
0
B5
1
B4
1
Control
–
Protection Bit 31 (D31) –
:
Protection Bit 3 (D3)
Protection Bit 2 (D2)
Protection Bit 1 (D1)
Protection Bit 0 (D0)
Protection Memory
–
3C
H
B3
1
18
B2
1
B1
0
Security Memory
(only SLE 4442)
–
–
–
–
Reference Data Byte 3 (D7 … D0)
Reference Data Byte 2 (D7 … D0)
Reference Data Byte 1 (D7 … D0)
Error Counter
B0
0
Address
A7…A0
Address
00
H
…1F
H
Data
D7…D0
Input data
Input data
SLE 4432
SLE 4442