Rainbow Electronics W49F002U - Manual (Page 9)

W49F002U
Publication Release Date: April 2000
- 9 - Revision A2
Command Codes for Sector Erase
BYTE SEQUENCE ADDRESS DATA
1 Write 5555H AAH
2 Write 2AAAH 55H
3 Write 5555H 80H
4 Write 5555H AAH
5 Write 2AAAH 55H
6 Write SA* 30H
Sector 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 30
to
address SA*
Exit
Pause T EC
Notes for chip erase:
Data Format: DQ7 − DQ0 (Hex)
Address Format: A14 − A0 (Hex)
SA : For details, see the page 6 .