©2011 Silicon Storage Technology, Inc. DS25040A 05/11
11
16 Mbit Multi-Purpose Flash Plus
SST39VF1681 / SST39VF1682
Data Sheet
Microchip Technology Company
4. With A
MS
-A
5
= 0; Sec ID is read with A
4
-A
0
,
SST ID is read with A
4
= 0 (Address range = 00000H to 0000FH),
User ID is read with A
4
= 1 (Address range = 00010H to 0001FH).
Lock Status is read with A
7
-A
0
= 0000FFH. Unlocked: DQ
3
= 1 / Locked: DQ
3
=0.
5. Valid Byte Addresses for Sec ID are from 000000H-00000FH and 000020H-00002FH.
6. The device does not remain in Software Product ID Mode if powered down.
7. With A
MS
-A
1
=0; SST Manufacturer ID = 00BFH, is read with A
0
=0,
SST39VF1681 Device ID = C8H, is read with A
0
=1,
SST39VF1682 Device ID = C9H, is read with A
0
=1,
A
MS
= Most significant address
A
MS
=A
20
for SST39VF1681/1682
8. Both Software ID Exit operations are equivalent
9. If users never lock after programming, Sec ID can be programmed over the previously unprogrammed bits (data=1)
using the Sec ID mode again (the programmed “0” bits cannot be reversed to “1”).
Table 7: CFI Query Identification String
1
1. Refer to CFI publication 100 for more details.
Address Data Data
10H 51H Query Unique ASCII string “QRY”
11H 52H
12H 59H
13H 01H Primary OEM command set
14H 07H
15H 00H Address for Primary Extended Table
16H 00H
17H 00H Alternate OEM command set (00H = none exists)
18H 00H
19H 00H Address for Alternate OEM extended Table (00H = none exits)
1AH 00H
T7.1 25040
Table 8: System Interface Information
Address Data Data
1BH 27H V
DD
Min (Program/Erase)
DQ
7
-DQ
4
: Volts, DQ
3
-DQ
0
: 100 millivolts
1CH 36H V
DD
Max (Program/Erase)
DQ
7
-DQ
4
: Volts, DQ
3
-DQ
0
: 100 millivolts
1DH 00H V
PP
min. (00H = no V
PP
pin)
1EH 00H V
PP
max. (00H = no V
PP
pin)
1FH 03H Typical time out for Byte-Program 2
N
µs (2
3
= 8 µs)
20H 00H Typical time out for min. size buffer program 2
N
µs (00H = not supported)
21H 04H Typical time out for individual Sector/Block-Erase 2
N
ms (2
4
=16ms)
22H 05H Typical time out for Chip-Erase 2
N
ms (2
5
=32ms)
23H 01H Maximum time out for Byte-Program 2
N
times typical (2
1
x2
3
=16µs)
24H 00H Maximum time out for buffer program 2
N
times typical
25H 01H Maximum time out for individual Sector/Block-Erase 2
N
times typical (2
1
x2
4
=32ms)
26H 01H Maximum time out for Chip-Erase 2
N
times typical (2
1
x2
5
=64ms)
T8.1 25040