SST39WF400A_03 Datasheet, PDF (21/26 Pages) Silicon Storage Technology, Inc – 4 Mbit (x16) Multi-Purpose Flash

4 Mbit Multi-Purpose Flash
SST39WF400A
Data Sheet
CFI Query Entry
Command Sequence
Load data: XXAAH
Address: 5555H
Software ID Entry
Command Sequence
Software ID Exit/CFI Exit
Command Sequence
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 TIDA
Load data: XX98H
Address: 5555H
Load data: XX90H
Address: 5555H
Load data: XXF0H
Address: 5555H
Return to normal
operation
Wait TIDA
Wait TIDA
Wait TIDA
Read CFI data
Read Software ID
Return to normal
operation
Note: X can be VIL or VIH, but no other value.
FIGURE 18: SOFTWARE ID/CFI COMMAND FLOWCHARTS
1220 F18.0
©2003 Silicon Storage Technology, Inc.
21
S71220-04-000
11/03