©2011 Silicon Storage Technology, Inc. DS25040A 05/11
22
16 Mbit Multi-Purpose Flash Plus
SST39VF1681 / SST39VF1682
Data Sheet
Microchip Technology Company
Figure 12:Software ID Entry and Read
Figure 13:CFI Query Entry and Read
1243 F10.1
ADDRESS A
MS-0
T
IDA
DQ
7-0
WE#
SW0 SW1 SW2
AAA AAA555 0000 0001
OE#
CE#
THREE-BYTE SEQUENCE FOR
SOFTWARE ID ENTRY
T
WP
T
WPH
T
AA
BF Device ID55AA 90
Note: Device ID - See Table 4 on page 9
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 F11.2
ADDRESS A
MS-0
T
IDA
DQ
7-0
WE#
SW0 SW1 SW2
555 AAAAAA
OE#
CE#
THREE-BYTE SEQUENCE FOR
CFI QUERY ENTRY
T
WP
T
WPH
T
AA
55AA 98
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.
