W49L201 Datasheet, PDF (11/23 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY

Preliminary W49L201
Command Codes for Boot Block Lockout Enable
BYTE SEQUENCE
1 Write
2 Write
3 Write
4 Write
5 Write
6 Write
BOOT BLOCK LOCKOUT FEATURE SET
ADDRESS
DATA
5555H
AAH
2AAAH
55H
5555H
80H
5555H
AAH
2AAAH
55H
5555H
40H
Pause TEC
Boot Block Lockout Enable Acquisition Flow
Boot Block Lockout
Feature Set 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 T EC
Exit
Notes for boot block lockout enable:
Data Format: DQ15-DQ8 Don't Care), DQ7−DQ0 (Hex)
Address Format: A14−A0 (Hex)
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Publication Release Date: May 2000
Revision A1