SRAM
AS5C4008
512K x 8 SRAM
PIN ASSIGNMENT
(Top View)
SRAM MEMORY ARRAY
AVAILABLE AS MILITARY
32-Pin DIP (CW), 32-Pin LCC (EC)
32-Pin SOJ (ECJ)
SPECIFICATION
• SMD 5962-95600
• SMD 5962-95613
• MIL STD-883
1
2
A18
A16
A14
A12
A7
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Vcc
A15
A17
WE\
A13
A8
3
4
FEATURES
5
• High Speed: 12, 15, 17, 20, 25, 35 and 45ns
• High-performance, low power military grade device
• Single +5V ±10% power supply
6
A6
7
A5
A9
8
A4
A11
OE\
A10
CE\
I/O7
I/O6
I/O5
I/O4
I/O3
9
A3
• Easy memory expansion with CE\ and OE\ options
• All inputs and outputs are TTL-compatible
• Ease of upgradability from 1 Meg using the 32 pin
evolutionary version.
10
11
12
13
14
15
16
A2
A1
A0
I/O0
I/O1
I/O2
Vss
OPTIONS
• Timing
MARKING
12ns access
15ns access
17ns access
20ns access
25ns access
35ns access
45ns access
-12
-15
-17
-20
-25
-35
-45
32-Pin Flat Pack (F)
Vcc
A15
A17
WE\
A13
A8
1
A18
A16
A14
A12
A7
32
2
31
3
30
4
29
5
28
6
A6
27
• Operating Temperature Range
Military: -55oC to +125oC
Industrial: -40oC to +85oC
• Packages
A9
7
A5
26
XT
IT
A11
OE\
A10
CE\
I/O7
I/O6
I/O5
I/O4
I/O3
8
A4
25
9
A3
24
10
11
12
13
14
15
16
A2
23
22
21
20
19
18
17
A1
Ceramic Dip (600 mil)
Ceramic Flatpack
Ceramic LCC
Ceramic SOJ
• Options
CW
F
EC
ECJ
No. 112
No. 304
No. 209
No. 502
A0
I/O0
I/O1
I/O2
Vss
2V data retention/ low power
L
NOTE: Not all combinations of operating temperature, speed, data retention and
low power are necessarily available. Please contact factory for availability of specific
part number combinations.
GENERAL DESCRIPTION
For more products and information
please visit our web site at
www.micross.com
The AS5C4008 is a 4 megabit monolithic CMOS SRAM, orga-
nized as a 512K x 8.
The evolutionary 32 pin device allows for easy upgrades from
the 1 meg SRAM.
For flexibility in high-speed memory applications, Micross of-
fers chip enable (CE\) and output enable (OE\) capabilities. These
enhancements can place the outputs in High-Z for additional flexibility
in system design.
Writing to these devices is accomplished when write enable
(WE\) and CE\ inputs are both LOW. Reading is accomplished when
WE\ remains HIGH and CE\ and OE\ go LOW. This allows systems
designers to meet low standby power requirements.
All devices operate from a single +5V power supply and all inputs
are fully TTL-Compatible.
Micross Components reserves the right to change products or specifications without notice.
AS5C4008
Rev. 6.4 01/10
1