參數(shù)資料
型號(hào): SLE4432
廠商: SIEMENS AG
英文描述: ICs for Chip Cards Intelligent 256-Byte EEPROM
中文描述: 集成電路芯片卡智能256字節(jié)EEPROM
文件頁(yè)數(shù): 17/35頁(yè)
文件大小: 1011K
代理商: SLE4432
SLE 4432
SLE 4442
Semiconductor Group
15
2.3.2 Read Protection Memory (SLE 4432 and SLE 4442)
The command transfers the protection bits under a continuous input of 32 clock pulses to the output.
I/O is switched to high impedance Z by an additional pulse. The protection memory can always be
read, and indicates the data bytes of the main memory protected against changing.
Figure 6
Read Protection Memory
Address
(decimal)
Main Memory
Protection Memory
Security Memory
(only SLE 4442)
255
Data Byte 255 (D7 … D0) –
:
:
32
Data Byte 32 (D7 … D0)
31
Data Byte 31 (D7 … D0)
Protection Bit 31 (D31) –
:
:
:
3
Data Byte 3 (D7 … D0)
Protection Bit 3 (D3)
Reference Data Byte 3 (D7 … D0)
2
Data Byte 2 (D7 … D0)
Protection Bit 2 (D2)
Reference Data Byte 2 (D7 … D0)
1
Data Byte 1 (D7 … D0)
Protection Bit 1 (D1)
Reference Data Byte 1 (D7 … D0)
0
Data Byte 0 (D7 … D0)
Protection Bit 0 (D0)
Error Counter
Command:
READ PROTECTION MEMORY
Control
Address
Data
B7
B6
B5
B4
B3
B2
B1
B0
A7…A0
D7…D0
Binary
0
0
1
1
0
1
0
0
No effect
No effect
Hexadecimal
34
H
No effect
No effect
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