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SST39SF020-70-4I-PH Datasheet(PDF) 6 Page - Silicon Storage Technology, Inc

Part # SST39SF020-70-4I-PH
Description  2 Megabit (256K x 8) Multi-Purpose Flash
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Manufacturer  SST [Silicon Storage Technology, Inc]
Direct Link  http://www.sst.com/
Logo SST - Silicon Storage Technology, Inc

SST39SF020-70-4I-PH Datasheet(HTML) 6 Page - Silicon Storage Technology, Inc

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© 1998 Silicon Storage Technology, Inc.
326-10 12/98
2 Megabit Multi-Purpose Flash
SST39SF020
Preliminary Specifications
TABLE 4: SOFTWARE COMMAND SEQUENCE
Command
1st Bus
2nd Bus
3rd Bus
4th Bus
5th Bus
6th Bus
Sequence
Write Cycle
Write Cycle
Write Cycle
Write Cycle
Write Cycle
Write Cycle
Addr(1) Data
Addr(1)
Data
Addr(1)
Data
Addr(1)
Data
Addr(1)
Data
Addr(1) Data
Byte Program
5555H
AAH
2AAAH
55H
5555H
A0H
BA(3)
Data
Sector Erase
5555H
AAH
2AAAH
55H
5555H
80H
5555H
AAH
2AAAH
55H
SAx(2)
30H
Chip Erase
5555H
AAH
2AAAH
55H
5555H
80H
5555H
AAH
2AAAH
55H
5555H
10H
Software ID Entry
5555H
AAH
2AAAH
55H
5555H
90H
Software ID Exit
XXH
F0H
Software ID Exit
5555H
AAH
2AAAH
55H
5555H
F0H
Notes:
(1) Address format A14-A0 (Hex), Addresses A15, A16 and A17 are a “Don’t Care” for the
Command sequence.
(2) SAx for sector erase; uses A17-A12 address lines
(3) BA = Program Byte address
(4) Both Software ID Exit operations are equivalent
Notes for Software ID Entry Command Sequence
1. With A17 -A1 =0; SST Manufacturer Code = BFH, is read with A0 = 0,
SST39SF020 Device Code = B6H, is read with A0 = 1.
2. The device does not remain in Software Product ID Mode if powered down.
326 PGM T4.0


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