W29EE012
- 6 -
Command Codes for Software Data Protection
BYTE SEQUENCE TO ENABLE PROTECTION TO DISABLE PROTECTION
ADDRESS DATA ADDRESS DATA
0 Write 5555H AAH 5555H AAH
1 Write 2AAAH 55H 2AAAH 55H
2 Write 5555H A0H 5555H 80H
3 Write - - 5555H AAH
4 Write - - 2AAAH 55H
5 Write - - 5555H 20H
Software Data Protection Acquisition Flow
Software Data Protection
Enable Flow
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data A0
to
address 5555
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 20
to
address 5555
Disable Flow
Notes for software program code:
Data Format: DQ7 − DQ0 (Hex)
Address Format: A14 − A0 (Hex)