参数资料
型号: W29C040-90BN
英文描述: EEPROM|FLASH|512KX8|CMOS|DIP|32PIN|PLASTIC
中文描述: 的EEPROM | FLASH动画| 512KX8 |的CMOS |双酯| 32脚|塑料
文件页数: 6/22页
文件大小: 308K
代理商: W29C040-90BN
W29C020C
- 6 -
Command Codes for Software Data Protection
BYTE SEQUENCE
0 Write
1 Write
2 Write
3 Write
4 Write
5 Write
TO ENABLE PROTECTION
ADDRESS
5555H
2AAAH
5555H
-
-
-
TO DISABLE PROTECTION
ADDRESS
5555H
2AAAH
5555H
5555H
2AAAH
5555H
DATA
AAH
55H
A0H
-
-
-
DATA
AAH
55H
80H
AAH
55H
20H
Software Data Protection Acquisition Flow
Software Data Protection
Enable Flow
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data A0
to
address 5555
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 80
to
address 5555
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 20
to
address 5555
Software Data Protection
Disable Flow
Sequentially load
up to 128 bytes
of page data
Pause 10 mS
Exit
Pause 10 mS
Exit
(Optional page-load
operation)
Notes for software program code:
Data Format: DQ7
DQ0 (Hex)
Address Format: A14
A0 (Hex)
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