參數(shù)資料
型號(hào): W29C020C-90Z
廠(chǎng)商: WINBOND ELECTRONICS CORP
元件分類(lèi): PROM
英文描述: 256K X 8 FLASH 5V PROM, 90 ns, PDIP32
封裝: 0.600 INCH, LEAD FREE, PLASTIC, DIP-32
文件頁(yè)數(shù): 5/27頁(yè)
文件大小: 176K
代理商: W29C020C-90Z
W29C020C
Publication Release Date: Nov. 23, 2006
- 13 -
Revision A7
7.5
Command Codes for Boot Block Lockout Enable
BYTE
SEQUENCE
BOOT BLOCK LOCKOUT FEATURE SET
ON FIRST 8K ADDRESS BOOT BLOCK
BOOT BLOCK LOCKOUT FEATURE
SET ON LAST 8K 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
3FFFFH
FFH
Pause 10
μS
Pause 10
μS
7.5.1
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
Pause 10 mS
Load data 00
to
address 00000
Boot Block Lockout
Feature Set on First 8K
Address Boot Block
Boot Block Lockout
Feature Set on Last 8K
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
Pause 10 mS
Load data FF
to
address 3FFFF
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 commend sequence, please contact the local distributor or Winbond Electronics Corp.
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