2 Mbit / 4 Mbit / 8 Mbit Multi-Purpose Flash
SST39LF200A / SST39LF400A / SST39LF800A
SST39VF200A / SST39VF400A / SST39VF800A
Data Sheet
TABLE 4: Software Command Sequence
Command
Sequence
1st Bus
Write Cycle
2nd Bus
Write Cycle
3rd Bus
Write Cycle
4th Bus
Write Cycle
5th Bus
Write Cycle
6th Bus
Write Cycle
Addr1 Data2 Addr1 Data2 Addr1 Data2 Addr1 Data2 Addr1 Data2 Addr1 Data2
5555H AAH 2AAAH 55H 5555H A0H Data
WA3
Word-Program
Sector-Erase
Block-Erase
Chip-Erase
4
5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H
5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H
SAX
BAX
30H
50H
4
5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H 5555H 10H
Software ID Entry5,6 5555H AAH 2AAAH 55H 5555H 90H
CFI Query Entry5
Software ID Exit7/
CFI Exit
5555H AAH 2AAAH 55H 5555H 98H
XXH F0H
Software ID Exit7/
CFI Exit
5555H AAH 2AAAH 55H 5555H F0H
T4.3 1117
1. Address format A14-A0 (Hex), Addresses AMS-A15 can be VIL or VIH, but no other value, for the Command sequence.
A
A
MS = Most significant address
MS = A16 for SST39LF/VF200A, A17 for SST39LF/VF400A, and A18 for SST39LF/VF800A
2. DQ15-DQ8 can be VIL or VIH, but no other value, for the Command sequence
3. WA = Program word address
4. SAX for Sector-Erase; uses AMS-A11 address lines
BAX for Block-Erase; uses AMS-A15 address lines
5. The device does not remain in Software Product ID mode if powered down.
6. With AMS-A1 = 0; SST Manufacturer’s ID = 00BFH, is read with A0 = 0,
SST39LF/VF200A Device ID = 2789H, is read with A0 = 1.
SST39LF/VF400A Device ID = 2780H, is read with A0 = 1.
SST39LF/VF800A Device ID = 2781H, is read with A0 = 1.
7. Both Software ID Exit operations are equivalent
TABLE 5: CFI Query Identification String1 for SST39LF200A/400A/800A and SST39VF200A/400A/800A
Address
10H
11H
12H
13H
14H
15H
16H
17H
Data
Data
0051H
0052H
0059H
0001H
0007H
0000H
0000H
0000H
0000H
0000H
0000H
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)
18H
19H
1AH
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 ]
