Rainbow Electronics W49L102 - Manual (Page 8)

Preliminary W49L102
- 8 -
Command Codes for Main Memory 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 5555H 30H
Main Memory 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 5555
Pause 1 Sec.
Exit
Notes for chip erase:
Data Format: DQ15-DQ8: Don't Care; DQ7
−
DQ0 (Hex)
Address Format: A14 − A0 (Hex)