SST39SF020 Silicon Storage Technology, SST39SF020 Datasheet - Page 6
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SST39SF020
Manufacturer Part Number
SST39SF020
Description
2 Megabit (256K x 8) Multi-Purpose Flash
Manufacturer
Silicon Storage Technology
Datasheet
1.SST39SF020.pdf
(23 pages)
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www.DataSheet4U.com
T
Notes:
Notes for Software ID Entry Command Sequence
© 1998 Silicon Storage Technology, Inc.
www.DataSheet4U.com
Command
Sequence
Byte Program
Sector Erase
Chip Erase
Software ID Entry 5555H AAH
Software ID Exit
Software ID Exit
ABLE
(1)
(2)
(3)
(4)
1. With A
2. The device does not remain in Software Product ID Mode if powered down.
Address format A
Command sequence.
SA
BA = Program Byte address
Both Software ID Exit operations are equivalent
4: S
SST39SF020 Device Code = B6H, is read with A
x
for sector erase; uses A
OFTWARE
17
-A
1
=0; SST Manufacturer Code = BFH, is read with A
Addr
C
5555H AAH
5555H AAH
5555H AAH
XXH
5555H AAH
Write Cycle
14
OMMAND
-A
1st Bus
0
(1)
(Hex), Addresses A
Data
F0H
S
17
EQUENCE
-A
12
Addr
2AAAH
2AAAH
2AAAH
2AAAH
2AAAH
address lines
Write Cycle
2nd Bus
(1)
15,
A
Data
55H
55H
55H
55H
55H
16
and A
0
= 1.
17
Addr
5555H
5555H
5555H
5555H
5555H
are a “Don’t Care” for the
Write Cycle
3rd Bus
(1)
6
0
= 0,
A0H
Data
80H
80H
90H
F0H
Addr
BA
5555H
5555H
Write Cycle
(3)
4th Bus
2 Megabit Multi-Purpose Flash
(1)
Data
Data
AAH
AAH
Addr
2AAAH
2AAAH
Write Cycle
5th Bus
Preliminary Specifications
(1)
Data
55H
55H
SST39SF020
Addr
SA
5555H 10H
Write Cycle
6th Bus
x
(2)
326 PGM T4.0
(1)
326-10 12/98
Data
30H