![](http://datasheet.mmic.net.cn/100000/WMS128K8L20DRC_datasheet_3246799/WMS128K8L20DRC_1.png)
1
White Electronic Designs Corporation Phoenix, AZ (602) 437-1520
HI-RELIABILITY PRODUCT
WMS128K8-XXX
128Kx8 MONOLITHIC SRAM, SMD 5962-96691
EVOLUTIONARY PINOUT
REVOLUTIONARY PINOUT
A0-16
Address Inputs
I/O0-7
Data Input/Output
CS
Chip Select
OE
Output Enable
WE
Write Enable
VCC
+5.0V Power
GND
Ground
PIN DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
NC
A0
A1
A2
A3
CS
I/O0
I/O1
VCC
GND
I/O2
I/O3
WE
A4
A5
A6
A7
NC
A16
A15
A14
A13
OE
I/O7
I/O6
GND
VCC
I/O5
I/O4
A12
A11
A10
A9
A8
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
NC
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
VCC
A15
NC
WE
A13
A8
A9
A11
OE
A10
CS
I/O7
I/O6
I/O5
I/O4
I/O3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A0
A1
A2
A3
CS
I/O1
I/O2
VCC
GND
I/O3
I/O4
WE
A4
A5
A6
A7
A16
A15
A14
A13
OE
I/O8
I/O7
GND
VCC
I/O6
I/O5
A12
A11
A10
A9
A8
36 FLAT PACK
36 CSOJ
TOP VIEW
32 CSOJ (DR)
June 1999 Rev. 2
FEATURES
s Access Times 15, 17, 20, 25, 35, 45, 55ns
s Revolutionary, Center Power/Ground Pinout
JEDEC Approved
32 lead Ceramic SOJ (Package 101)
36 lead Ceramic SOJ (Package 100)
36 lead Ceramic Flat Pack (Package 226)
s Evolutionary, Corner Power/Ground Pinout
JEDEC Approved
32 pin Ceramic DIP (Package 300)
32 lead Ceramic SOJ (Package 101)
32 lead Ceramic Flat Pack (Package 220)
32 DIP
32 CSOJ (DE)
32 FLAT PACK (FE)
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
4321 32 31 30
14 15 16 17 18 19 20
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
V
SS
I/O3
I/O4
I/O5
I/O6
WE
A13
A8
A9
A11
OE
A10
CS
I/O7
A12
A14
A16
NC
V
CC
A15
NC
32 CLCC
s 32 pin, Rectangular Ceramic Leadless Chip Carrier
(Package 601)
s MIL-STD-883 Compliant Devices Available
s Commercial, Industrial and Military Temperature Range
s 5 Volt Power Supply
s Low Power CMOS
s 2V Data Retention Devices Available
(Low Power Version)
s TTL Compatible Inputs and Outputs
TOP VIEW