參數(shù)資料
型號(hào): W29C022P-90
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 256K X 8 FLASH 5V PROM, 90 ns, PQCC32
封裝: PLASTIC, LCC-32
文件頁(yè)數(shù): 18/21頁(yè)
文件大小: 303K
代理商: W29C022P-90
W29C022
- 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
Notes for software program code:
Data Format: DQ7
DQ0 (Hex)
Address Format: A14
A0 (Hex)
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