WS512K16-XXX Datasheet, PDF (1/6 Pages) White Electronic Designs Corporation – 512Kx16 SRAM MODULE

White Electronic Designs
WS512K16-XXX
ADVANCED*
512Kx16 SRAM MODULE
FEATURES
Access Times 17, 20, 25, 35ns
MIL-STD-883 Compliant Devices Available
Packaging
• 44 pin Ceramic SOJ (Package 102)
• 44 lead Ceramic Flatpack (Package 209)
Organized as two banks of 256Kx16
Data Byte Control:
Lower Byte (LB#) = I/O1-8
Upper Byte (UB#) = I/O9-16
Data I/O Compatible with 3.3V devices
2V Minimum Data Retention for battery back up
operation
Commercial, Industrial and Military Temperature
Range
5 Volt Power Supply (3.3V parts also available)
Low Power CMOS
TTL Compatible Inputs and Outputs
* This product is under development, is not qualified or characterized and is subject to
change or cancellation without notice.
PIN CONFIGURATION FOR WS512K16-XXX
44 CSOJ
44 FLATPACK
Top View
A0 1
A1 2
A2 3
A3 4
A4 5
CS1# 6
I/O1 7
I/O2 8
I/O3 9
I/O4 10
VCC 11
GND 12
I/O5 13
I/O6 14
I/O7 15
I/O8 16
WE# 17
A5 18
A6 19
A7 20
A8 21
A9 22
44 A17
43 A16
42 A15
41 OE#
40 UB#
39 LB#
38 I/O16
37 I/O15
36 I/O14
35 I/O13
34 GND
33 VCC
32 I/O12
31 I/O11
30 I/O10
29 I/O9
28 CS2#
27 A14
26 A13
25 A12
24 A11
23 A10
Pin Description
A0-17
LB#
UB#
I/O1-16
Address Inputs
Lower-Byte Control (I/O1-8)
Upper-Byte Control (I/O9-16)
Data Input/Output
CS1-2#
OE#
WE#
Chip Select
Output Enable
Write Enable
VCC
+5.0V Power
GND
Ground
NC
No Connection
Block Diagram
A0 - 1 7
W E#
O E#
U B#
L B#
256K x 16
256K x 16
C S1#
C S2#
I/O1-16
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
April 1998
1
White Electronic Designs Corporation • [phone] • www.wedc.com