Datasheet

©2011 Silicon Storage Technology, Inc. DS25001A 03/11
27
2 Mbit / 4 Mbit / 8 Mbit Multi-Purpose Flash
SST39LF200A / SST39LF400A / SST39LF800A
SST39VF200A / SST39VF400A / SST39VF800A
Data Sheet
A
Microchip Technology Company
Figure 20: Software ID/CFI Command Flowcharts
1117 F15.4
Load data: XXAAH
Address: 5555H
Software ID Entry
Command Sequence
Load data: XX55H
Address: 2AAAH
Load data: XX90H
Address: 5555H
Wait T
IDA
Read Software ID
Load data: XXAAH
Address: 5555H
CFI Query Entry
Command Sequence
Load data: XX55H
Address: 2AAAH
Load data: XX98H
Address: 5555H
Wait T
IDA
Read CFI data
Load data: XXAAH
Address: 5555H
Software ID Exit/CFI Exit
Command Sequence
Load data: XX55H
Address: 2AAAH
Load data: XXF0H
Address: 5555H
Load data: XXF0H
Address: XXH
Return to normal
operation
Wait T
IDA
Wait T
IDA
Return to normal
operation
Note: X can be V
IL
or V
IH
, but no other value.