WMS256K16-XXX Datasheet, PDF (1/7 Pages) White Electronic Designs Corporation – 256Kx16 MONOLITHIC SRAM, SMD 5962-96902

White Electronic Designs
WMS256K16-XXX
256Kx16 MONOLITHIC SRAM, SMD 5962-96902
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 225)
• 44 lead Formed Ceramic Flatpack
■ Organized as 256Kx16
■ Data Byte Control:
• Lower Byte (LB#) = I/O1-8
• Upper Byte (UB#) = I/O9-16
■ 2V Minimum Data Retention for battery back up
operation (WMS256K16L-XXX Low Power Version
Only)
■ Commercial, Industrial and Military Temperature
Range
■ 5V Power Supply
■ Low Power CMOS
■ TTL Compatible Inputs and Outputs
PIN CONFIGURATION FOR WMS256K16-XXX
44 CSOJ
44 FlatpacK
TOP VIEW
A0 1
A1 2
A2 3
A3 4
A4 5
CS# 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 NC
27 A14
26 A13
25 A12
24 A11
23 A10
PIN DESCRIPTION
A0-17
LB#
UB#
I/O1-16
CS#
OE#
WE#
VCC
GND
NC
Address Inputs
Lower-Byte Control (I/O1-8)
Upper-Byte Control (I/O9-16)
Data Input/Output
Chip Select
Output Enable
Write Enable
+5.0V Power
Ground
No Connection
August 2004
Rev. 6
1
White Electronic Designs Corporation • [phone] • www.wedc.com