Datasheet

©2013 Silicon Storage Technology, Inc. DS25022B 04/13
10
1 Mbit / 2 Mbit / 4 Mbit Multi-Purpose Flash
SST39SF010A / SST39SF020A / SST39SF040
Data Sheet
Operations
Table 3: Operation Modes Selection
Mode CE# OE# WE# DQ Address
Read V
IL
V
IL
V
IH
D
OUT
A
IN
Program V
IL
V
IH
V
IL
D
IN
A
IN
Erase V
IL
V
IH
V
IL
X
1
1. X can be V
IL
or V
IH
, but no other value.
Sector address, XXH for Chip-Erase
Standby V
IH
X X High Z X
Write Inhibit X V
IL
X High Z/ D
OUT
X
XXV
IH
High Z/ D
OUT
X
Product Identification
Software Mode V
IL
V
IL
V
IH
See Table 4
T3.3 25022
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
Addr
1
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 SST39SF010A, A
17
for SST39SF020A, and A
18
for SST39SF040
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
2
2. BA = Program Byte address
Data
Sector-Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H SA
X
3
3. SA
X
for Sector-Erase; uses A
MS
-A
12
address lines
30H
Chip-Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H 5555H 10H
Software ID Entry
4,5
4. The device does not remain in Software Product ID mode if powered down.
5. With A
MS
-A
1
= 0; SST Manufacturer’s ID = BFH, is read with A
0
= 0,
SST39SF010A Device ID = B5H, is read with A
0
= 1
SST39SF020A Device ID = B6H, is read with A
0
= 1
SST39SF040 Device ID = B7H, is read with A
0
= 1
5555H AAH 2AAAH 55H 5555H 90H
Software ID Exit
6
6. Both Software ID Exit operations are equivalent
XXH F0H
Software ID Exit
6
5555H AAH 2AAAH 55H 5555H F0H
T4.2 25022