2 Mbit / 4 Mbit / 8 Mbit Multi-Purpose Flash
SST39LF200A / SST39LF400A / SST39LF800A
SST39VF200A / SST39VF400A / SST39VF800A
Data Sheet
CFI Query Entry
Command Sequence
Software ID Entry
Command Sequence
Software ID Exit/CFI Exit
Command Sequence
Load data: XXAAH
Address: 5555H
Load data: XXAAH
Address: 5555H
Load data: XXAAH
Address: 5555H
Load data: XXF0H
Address: XXH
Load data: XX55H
Address: 2AAAH
Load data: XX55H
Address: 2AAAH
Load data: XX55H
Address: 2AAAH
Wait T
IDA
Load data: XX98H
Address: 5555H
Load data: XX90H
Address: 5555H
Load data: XXF0H
Address: 5555H
Return to normal
operation
Wait T
Wait T
Wait T
IDA
IDA
IDA
Return to normal
operation
Read CFI data
Read Software ID
1117 F15.4
Note: X can be V or V , but no other value.
IL IH
FIGURE 20: Software ID/CFI Command Flowcharts
©2007 Silicon Storage Technology, Inc.
S71117-09-000
2/07
24
SST [ SILICON STORAGE TECHNOLOGY, INC ]
