SLE4440 Datasheet, PDF (12/14 Pages) Siemens Semiconductor Group – ICs for Chip Cards / Intelligent 256/64/128-Byte EEPROM

SLE 4432
SLE 4442
SLE 4440
SLE 4441
3.
Operational Information
3.1.
Memory Map SLE 4440
Address
(decimal)
64
:
32
31
:
4
3
2
1
0
Main Memory
Data Byte 64 (D7...D0)
:
Data Byte 32 (D7...D0)
Data Byte 31 (D7...D0)
:
Data Byte 4 (D7...D0)
Data Byte 3 (D7...D0)
Data Byte 2 (D7...D0)
Data Byte 1 (D7...D0)
Data Byte 0 (D7...D0)
Protection Memory Security Memory
Protection Bit 31 (D31)
:
Protection Bit 4 (D31)
Protection Bit 3 (D3) Reference Data Byte 3 (D7...D0)
Protection Bit 2 (D2) Reference Data Byte 2 (D7...D0)
Protection Bit 1 (D1) Reference Data Byte 1 (D7...D0)
Protection Bit 0 (D0) Error Counter
The Data bytes 0 to 31 can be protected against further changes by programming the associated
protection bit 0 to 31. The SLE 4440 allows data changing only after correct verification of the
Reference Data bytes. Reading of the Data bytes and of the associated protection bits is always
possible.
3.2.
Memory Map SLE 4441
Address
(decimal)
128
:
32
31
:
4
3
2
1
0
Main Memory
Data Byte 128 (D7...D0)
:
Data Byte 32 (D7...D0)
Data Byte 31 (D7...D0)
:
Data Byte 4 (D7...D0)
Data Byte 3 (D7...D0)
Data Byte 2 (D7...D0)
Data Byte 1 (D7...D0)
Data Byte 0 (D7...D0)
Protection Memory
Protection Bit 31 (D31)
:
Protection Bit 4 (D31)
Protection Bit 3 (D3)
Protection Bit 2 (D2)
Protection Bit 1 (D1)
Protection Bit 0 (D0)
Security Memory
Reference Data Byte 3 (D7...D0)
Reference Data Byte 2 (D7...D0)
Reference Data Byte 1 (D7...D0)
Error Counter
The Data bytes 0 to 31 can be protected against further changes by programming the associated
protection bit 0 to 31. The SLE 4441 allows data changing only after correct verification of the
Reference Data bytes. Reading of the Data bytes and of the associated protection bits is always
possible.
Semiconductor Group
12
Data Sheet Extension 09.98