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参数资料
| 型号： | W29C042P-90 |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | PROM |
| 英文描述： | 512K X 8 FLASH 5V PROM, 90 ns, PQCC32 |
| 封装： | PLASTIC, LCC-32 |
| 文件页数： | 22/22页 |
| 文件大小： | 297K |
| 代理商： | W29C042P-90 |
W29C042
Publication Release Date: February 18, 2002
- 9 -
Revision A2
Command Codes for Boot Block Lockout Enable
BYTE SEQUENCE
BOOT BLOCK LOCKOUT FEATURE SET
ON FIRST 16K ADDRESS BOOT BLOCK
BOOT BLOCK LOCKOUT FEATURE SET
ON LAST 16K ADDRESS BOOT BLOCK
ADDRESS
DATA
ADDRESS
DATA
0 Write
5555H
AAH
5555H
AAH
1 Write
2AAAH
55H
2AAAH
55H
2 Write
5555H
80H
5555H
80H
3 Write
5555H
AAH
5555H
AAH
4 Write
2AAAH
55H
2AAAH
55H
5 Write
5555H
40H
5555H
40H
6 Write
00000H
00H
7FFFFH
FFH
Pause 10 mS
Boot Block Lockout Enable Acquisition Flow
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 40
to
address 5555
Wait for 10 mS
Load data 00
to
address 00000
Boot Block Lockout
Feature Set on Last
16K Address Boot Block
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 40
to
address 5555
Load data FF
to
address 7FFFF
Wait for 10 mS
Boot Block Lockout
Feature Set on Last
16K Address Boot Block
Notes for boot block lockout enable:
1. Data Format: DQ7
DQ0 (Hex)
2. Address Format: A14
A0 (Hex)
3. If you have any questions about this command sequence, please contact the local distributor or Winbond Electronics Corp.
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