SST39VF800Q-90-4I-UK データシートの表示（PDF） - Silicon Storage Technology
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SST39VF800Q-90-4I-UK Datasheet PDF : 23 Pages
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8 Megabit Multi-Purpose Flash
SST39VF800Q / SST39VF800
Advance Information
TABLE 4: SOFTWARE COMMAND SEQUENCE
Command
Sequence
1st Bus
Write Cycle
Addr(1) Data
2nd Bus
Write Cycle
Addr(1) Data
3rd Bus
Write Cycle
Addr(1) Data
4th Bus
Write Cycle
Addr(1) Data
5th Bus
6th Bus
Write Cycle Write Cycle
Addr(1) Data Addr(1) Data
Word Program
Sector Erase
Block Erase
Chip Erase
Software ID Entry
CFI Query Entry
Software ID Exit/
CFI Exit
Software ID Exit/
CFI Exit
5555H
5555H
5555H
5555H
5555H
5555H
XXH
5555H
AAH
AAH
AAH
AAH
AAH
AAH
F0H
AAH
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
2AAAH 55H
5555H A0H
5555H 80H
5555H 80H
5555H 80H
5555H 90H
5555H 98H
WA(3)
5555H
5555H
5555H
Data
AAH
AAH
AAH
2AAAH 55H
2AAAH 55H
2AAAH 55H
SAx(2)
BAx(2)
5555H
30H
50H
10H
5555H F0H
Notes:
343 PGM T4.0
(1) Address format A14-A0 (Hex), Addresses A15, A16, A17 and A18 are “Don’t Care” for Command sequence.
(2) SAx for Sector Erase; uses A18-A11 address lines
BAx, for Block Erase; uses A18-A15 address lines
(3) WA = Program word address
(4) Both Software ID Exit operations are equivalent
(5) DQ15 - DQ8 are “Don’t Care” for Command sequence
Notes for Software ID Entry Command Sequence
1. With A18 -A1 =0; SST Manufacturer Code = 00BFH, is read with A0 = 0,
SST39VF800Q/VF800 Device Code = 2781H, is read with A0 = 1.
2. The device does not remain in Software Product ID Mode if powered down.
TABLE 5: CFI QUERY IDENTIFICATION STRING1
Address
Data
Data
10H
0051H
11H
0052H
Query Unique ASCII string “QRY”
12H
0059H
13H
0001H
Primary OEM command set
14H
0007H
15H
0000H
Address for Primary Extended Table
16H
0000H
17H
0000H
Alternate OEM command set (00H = none exists)
18H
0000H
19H
0000H
Address for Alternate OEM extended Table (00H = none exits)
1AH
0000H
Note 1: Refer to CFI publication 100 for more details.
343 PGM T5.1
© 1999 Silicon Storage Technology, Inc.
6
343-04 2/99
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