Datasheet

©2011 Silicon Storage Technology, Inc. DS25040A 05/11
23
16 Mbit Multi-Purpose Flash Plus
SST39VF1681 / SST39VF1682
Data Sheet
A
Microchip Technology Company
Figure 14:Software ID Exit/CFI Exit
Figure 15:Sec ID Entry
1243 F12.2
ADDRESS A
MS-0
DQ
7-0
T
IDA
T
WP
T
WHP
WE#
SW0 SW1 SW2
AAA AAA555
THREE-BYTE SEQUENCE FOR
SOFTWARE ID EXIT AND RESET
OE#
CE#
AA 55 F0
Note: A
MS
= Most Significant Address
A
MS
=A
20
for SST39VF168x
WP# must be held in proper logic state (V
IL
or V
IH
) 1 µs prior to and 1 µs after the command sequence.
X can be V
IL
or V
IH,
but no other value.
1243 F13.1
ADDRESS A
MS-0
T
IDA
DQ
7-0
WE#
SW0 SW1 SW2
AAA AAA555
OE#
CE#
THREE-BYTE SEQUENCE FOR
CFI QUERY ENTRY
T
WP
T
WPH
T
AA
55AA 88
Note: A
MS
= Most Significant Address
A
MS
=A
20
for SST39VF168x
WP# must be held in proper logic state (V
IL
or V
IH
) 1 µs prior to and 1 µs after the command sequence.
X can be V
IL
or V
IH,
but no other value.