Rainbow Electronics W49L102 - Manual (Page 10)

Preliminary W49L102
- 10 -
Command Codes for Boot Block Lockout Enable
BYTE SEQUENCE BOOT BLOCK LOCKOUT FEATURE SET
ADDRESS DATA
1 Write 5555H AAH
2 Write 2AAAH 55H
3 Write 5555H 80H
4 Write 5555H AAH
5 Write 2AAAH 55H
6 Write 5555H 40H
Pause 1 Sec.
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 1 Sec.
Exit
Notes for boot block lockout enable:
Data Format: DQ15-DQ8 Don't Care), DQ7
−
DQ0 (Hex)
Address Format: A14
−
A0 (Hex)