SST39SF020 Silicon Storage Technology, SST39SF020 Datasheet - Page 5

• Manufacturer Part Number: SST39SF020
• Description: 2 Megabit (256K x 8) Multi-Purpose Flash
• Manufacturer: Silicon Storage Technology

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2 Megabit Multi-Purpose Flash
SST39SF020
Preliminary Specifications
T
T
© 1998 Silicon Storage Technology, Inc.
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Symbol
A
DQ
CE#
OE#
WE#
Vcc
Vss
NC
ABLE
ABLE
Mode
Read
Program
Erase
Standby
Write Inhibit
Product Identification
17
Software Mode
Hardware Mode
-A
7
-DQ
2: P
0
3: O
0
IN
PERATION
D
ESCRIPTION
Pin Name
Address Inputs
Data Input/output
Chip Enable
Output Enable
Write Enable
Power Supply
Ground
No Connection
M
ODES
S
ELECTION
CE#
V
V
V
V
X
X
V
V
IL
IL
IL
IH
IL
IL
OE#
V
V
V
X
V
X
V
V
IL
IH
IH
IL
IL
IL
Functions
To provide memory addresses. During sector erase A
To output data during read cycles and receive input data during write
To activate the device when CE# is low.
To gate the data output buffers.
To control the write operations.
To provide 5-volt supply (± 10%)
Unconnected pins.
will select the sector.
cycles. Data is internally latched during a write cycle. The outputs are in
tri-state when OE# or CE# is high.
WE#
V
V
V
X
X
V
V
V
IH
IL
IL
IH
IH
IH
A9
A
A
X
X
X
X
V
A
IN
IN
H
IN
5
DQ
D
D
X
High Z
High Z/D
High Z/D
Manufacturer Code (BF)
Device Code (B6)
ID Code
OUT
IN
OUT
OUT
Address
A
A
Sector address, XXh for
X
X
X
A
A
See Table 4
chip erase
IN
IN
17
17
- A
- A
17
1
1
-A
= V
= V
12
address lines
IL
IL
, A
, A
0
0
326 PGM T3.4
326 PGM T2.1
326-10 12/98
= V
= V
IL
IH
5
6
7
8
13
14
15
16
1
2
3
4
9
10
11
12