Figure 4
Erase Algorithm
Bus
Operations
Standby
Write
Read
Standby
Command
Sequence
Comments
Erase
Data Polling to Verify Erasure
Compare Output to FFH
Start
Write Erase Command Sequence
(See Below)
A
Data Poll or Toggle Bit
Successfully Completed
Erasure Completed
Chip Erase Command Sequence
(Address/Command)
5555H/AAH
Individual Sector/Multiple Sector
Erase Command Sequence
(Address/Command)
5555H/AAH
2AAAH/55H
2AAAH/55H
5555H/80H
5555H/80H
5555H/AAH
5555H/AAH
2AAAH/55H
2AAAH/55H
5555H/10H
Sector Address/30H
Additional Sector
Erase Commands
are Optional
Sector Address/30H
Sector Address/30H
Aeroflex Circuit Technology
11
SCD1665 REV B 6/29/01 Plainview NY (516) 694-6700