1 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
HI-RELIABILITY PRODUCT
WMS512K8-XXX
512Kx8 MONOLITHIC SRAM, SMD 5962-95613
FEATURES
n Access Times 15, 17, 20, 25, 35, 45, 55ns
n MIL-STD-883 Compliant Devices Available
n Revolutionary, Center Power/Ground Pinout
JEDEC Approved
• 36 lead Ceramic SOJ (Package 100)
• 36 lead Ceramic Flat Pack (Package 226)
n 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 lead Ceramic Flat Pack (Package 142)
n 32 pin, Rectangular Ceramic Leadless Chip Carrier
(Package 601)
n Commercial, Industrial and Military Temperature Range
n 5 Volt Power Supply
n Low Power CMOS
n Low Power Data Retention for Battery Back-up Operation
n TTL Compatible Inputs and Outputs
REVOLUTIONARY PINOUT EVOLUTIONARY PINOUT
32 DIP
32 CSOJ (DE)
32 FLAT PACK (FE)*
32 FLAT PACK (FD)
TOP VIEW
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
A0
A1
A2
A3
A4
CS
I/O0
I/O1
VCC
GND
I/O2
I/O3
WE
A5
A6
A7
A8
A9
NC
A18
A17
A16
A15
OE
I/O7
I/O6
GND
VCC
I/O5
I/O4
A14
A13
A12
A11
A10
NC
A0-18 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
36 FLAT PACK
36 CSOJ
TOP VIEW
October 2000 Rev. 4
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
4321323130
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 A18 V
CC
A15 A17
TOP VIEW
32 CLCC
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
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
VCC
A15
A17
WE
A13
A8
A9
A11
OE
A10
CS
I/O7
I/O6
I/O5
I/O4
I/O3
*Package not recommended for new designs, "FD" recommended for new designs.