Rainbow Electronics W29C040 - Manual (Page 7)

W29C040
Publication Release Date: May 1999
- 7 - Revision A5
Command Codes for Software Chip Erase
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 10H
Software Chip Erase 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 10
to
address 5555
Pause 50 mS
Exit
Notes for software chip erase:
Data Format: DQ7 − DQ0 (Hex)
Address Format: A14
−
A0 (Hex)