Rainbow Electronics W49F002U - Manual (Page 11)

W49F002U
Publication Release Date: April 2000
- 11 - Revision A2
Command Codes for Boot Block Lockout Enable
BYTE SEQUENCE ADDRESS DATA
0 Write 5555H AAH
1 Write 2AAAH 55H
2 Write 5555H 80H
3 Write 5555H AAH
4 Write 2AAAH 55H
5 Write 5555H 40H
Pause T BP
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
Exit
Pause T BP
Notes for boot block lockout enable:
Data Format: DQ7
− DQ0 (Hex)
Address Format: A14 − A0 (Hex)