1 / 12 page
GS72108ATP/J
256K x 8
2Mb Asynchronous SRAM
7, 8, 10, 12 ns
3.3 V VDD
Center VDD and VSS
SOJ, TSOP
Commercial Temp
Industrial Temp
Rev: 1.05 10/2004
1/12
© 2001, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Features
• Fast access time: 7, 8, 10, 12 ns
• CMOS low power operation: 135/115/95/80 mA at minimum
cycle time
• Single 3.3 V power supply
• All inputs and outputs are TTL-compatible
• Fully static operation
• Industrial Temperature Option: –40° to 85°C
• Package line up
J: 400 mil, 36-pin SOJ package
TP: 400 mil, 44-pin TSOP Type II package
GP:Pb-free 400 mil, 44-pin TSOP Type II package
• Pb-Free TSOP-II package available
Description
The GS72108A is a high speed CMOS Static RAM organized
as 262,144 words by 8 bits. Static design eliminates the need
for external clocks or timing strobes. The GS operates on a
single 3.3 V power supply and all inputs and outputs are TTL-
compatible. The GS72108A is available in 400 mil SOJ and
400 mil TSOP Type-II packages.
SOJ 256K x 8-Pin Configuration
Package J
Pin Descriptions
Symbol
Description
A0–A17
Address input
DQ1–DQ8
Data input/output
CE
Chip enable input
WE
Write enable input
OE
Output enable input
VDD
+3.3 V power supply
VSS
Ground
NC
No connect
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A4
A3
A2
A1
A0
CE
DQ1
DQ2
VDD
VSS
DQ3
DQ4
WE
A17
A16
A15
NC
A5
A6
A7
A8
OE
DQ8
DQ7
VSS
VDD
DQ6
DQ5
A9
A10
A11
A12
36-pin
400 mil SOJ
17
18
A14
A13
20
19
NC
NC