2 Mbit / 4 Mbit / 8 Mbit Multi-Purpose Flash
SST39LF200A / SST39LF400A / SST39LF800A
SST39VF200A / SST39VF400A / SST39VF800A
Data Sheet
TABLE 4: Software Command Sequence
Command
Sequence
Word-Program
Sector-Erase
Block-Erase
Chip-Erase
CFI Query Entry
Software ID Exit
7
/
CFI Exit
Software ID Exit
/
CFI Exit
1st Bus
Write Cycle
Addr
1
5555H
5555H
5555H
5555H
5555H
XXH
5555H
Data
2
AAH
AAH
AAH
AAH
AAH
AAH
F0H
AAH
2AAAH
55H
5555H
F0H
T4.3 1117
2nd Bus
Write Cycle
Addr
2AAAH
2AAAH
2AAAH
2AAAH
2AAAH
2AAAH
Data
2
55H
55H
55H
55H
55H
55H
3rd Bus
Write Cycle
Addr
5555H
5555H
5555H
5555H
5555H
5555H
Data
2
A0H
80H
80H
80H
90H
98H
4th Bus
Write Cycle
Addr
WA
3
5555H
5555H
5555H
Data
2
Data
AAH
AAH
AAH
5th Bus
Write Cycle
Addr
2AAAH
2AAAH
2AAAH
Data
2
55H
55H
55H
6th Bus
Write Cycle
Addr
SA
X4
BA
X
Data
2
30H
50H
10H
5555H
Software ID Entry
5,6
5555H
1. Address format A
14
-A
0
(Hex), Addresses A
MS-
A
15
can be V
IL
or V
IH
, but no other value, for the Command sequence.
A
MS
= Most significant address
A
MS
= A
16
for SST39LF/VF200A, A
17
for SST39LF/VF400A, and A
18
for SST39LF/VF800A
2. DQ
15
-DQ
8
can be V
IL
or V
IH
, but no other value, for the Command sequence
3. WA = Program word address
4. SA
X
for Sector-Erase; uses A
MS
-A
11
address lines
BA
X
for Block-Erase; uses A
MS
-A
15
address lines
5. The device does not remain in Software Product ID mode if powered down.
6. With A
MS
-A
1
= 0; SST Manufacturer’s ID = 00BFH, is read with A
0
= 0,
SST39LF/VF200A Device ID = 2789H, is read with A
0
= 1.
SST39LF/VF400A Device ID = 2780H, is read with A
0
= 1.
SST39LF/VF800A Device ID = 2781H, is read with A
0
= 1.
7. Both Software ID Exit operations are equivalent
TABLE 5: CFI Query Identification String
1
for SST39LF200A/400A/800A and SST39VF200A/400A/800A
Address
10H
11H
12H
13H
14H
15H
16H
17H
18H
19H
1AH
Data
0051H
0052H
0059H
0001H
0007H
0000H
0000H
0000H
0000H
0000H
0000H
Data
Query Unique ASCII string “QRY”
Primary OEM command set
Address for Primary Extended Table
Alternate OEM command set (00H = none exists)
Address for Alternate OEM extended Table (00H = none exits)
T5.0 1117
1. Refer to CFI publication 100 for more details.
©2007 Silicon Storage Technology, Inc.
S71117-09-000
2/07
8
SST [ SILICON STORAGE TECHNOLOGY, INC ]
