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WS512K16-25FLIA Datasheet(PDF) 1 Page - White Electronic Designs Corporation |
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WS512K16-25FLIA Datasheet(HTML) 1 Page - White Electronic Designs Corporation |
1 / 6 page 1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs White Electronic Designs Corp. reserves the right to change products or specifications without notice. WS512K16-XXX April 1998 ADVANCED* 256K x 16 256K x 16 UB# OE# WE# CS1# CS2# I/O 1-16 A0-17 LB# 512Kx16 SRAM MODULE 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. 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 Block Diagram Top View PIN CONFIGURATION FOR WS512K16-XXX 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 A0 A1 A2 A3 A4 CS1# I/O1 I/O2 I/O3 I/O4 VCC GND I/O5 I/O6 I/O7 I/O8 WE# A5 A6 A7 A8 A9 A17 A16 A15 OE# UB# LB# I/O16 I/O15 I/O14 I/O13 GND VCC I/O12 I/O11 I/O10 I/O9 CS2# A14 A13 A12 A11 A10 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 44 CSOJ 44 FLATPACK Pin Description A0-17 Address Inputs LB# Lower-Byte Control (I/O1-8) UB# Upper-Byte Control (I/O9-16) I/O1-16 Data Input/Output CS1-2# Chip Select OE# Output Enable WE# Write Enable VCC +5.0V Power GND Ground NC No Connection |
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