参数资料
型号: W29C020CP-12
厂商: WINBOND ELECTRONICS CORP
元件分类: PROM
英文描述: 256K X 8 FLASH 5V PROM, 120 ns, PQCC32
封装: PLASTIC, LCC-32
文件页数: 18/21页
文件大小: 182K
代理商: W29C020CP-12
W29C020C
- 6 -
Command Codes for Software Data Protection
BYTE SEQUENCE
TO ENABLE PROTECTION
TO DISABLE PROTECTION
ADDRESS
DATA
ADDRESS
DATA
0 Write
5555H
AAH
5555H
AAH
1 Write
2AAAH
55H
2AAAH
55H
2 Write
5555H
A0H
5555H
80H
3 Write
-
5555H
AAH
4 Write
-
2AAAH
55H
5 Write
-
5555H
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)
相关PDF资料
PDF描述
W29C022T-12 256K X 8 FLASH 5V PROM, 120 ns, PDSO32
W29C022-12 256K X 8 FLASH 5V PROM, 120 ns, PDIP32
W29C022-70 256K X 8 FLASH 5V PROM, 70 ns, PDIP32
W29C040-15B 512K X 8 FLASH 5V PROM, 150 ns, PDIP32
W29C040S-15 512K X 8 FLASH 5V PROM, 150 ns, PDSO32
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