W24257A

W24257A 32K × 8 HIGH SPEED CMOS STATIC RAM GENERAL DESCRIPTION The W24257A is a high speed, low power CMOS static RAM organized as 32768 × 8 bits that operates on a single 5-volt power supply. This device is manufactured using Winbond's high performance CMOS technology. FEATURES High speed access time: 10/12/15/20 nS (max.) Low power consumption: − Active: 400 mW (typ.) Single +5V power supply Fully static operation All inputs and outputs directly TTL compatible Three-state outputs Available packages: 28-pin 300 mil SOJ, 330 mil SOP, skinny DIP and standard type one TSOP (8 mm × 13.4 mm) PIN CONFIGURATIONS BLOCK DIAGRAM A14 1 A12 2 28 VDD 27 WE A7 3 26 A13 A6 4 25 A8 A5 5 24 A9 A4 6 23 A11 A3 7 22 OE 28-pin A2 8 DIP 21 A10 A1 9 20 CS A0 10 19 I/O8 I/O1 11 18 I/O7 I/O2 12 17 I/O6 I/O3 13 16 I/O5 V SS 14 15 I/O4 OE A11 A9 A8 A13 WE VDD A14 A12 A7 A6 A5 A4 A3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28-pin TSOP 28 A10 27 CS 26 I/O8 25 I/O7 24 I/O6 23 I/O5 22 I/O4 21 VSS 20 I/O3 19 I/O2 18 I/O1 17 A0 16 A1 15 A2 VDD VSS A0 . DECODER . A14 CORE ARRAY CS OE CONTROL WE DATA I/O I/O1 . . I/O8 PIN DESCRIPTION SYMBOL DESCRIPTION A0−A14 Address Inputs I/O1−I/O8 Data Inputs/Outputs CS Chip Select Input WE Write Enable Input OE Output Enable Input VDD Power Supply VSS Ground Publication Release Date: May 1997 - 1 - Revision A14 W24257A DC CHARACTERISTICS Absolute Maximum Ratings PARAMETER RATING UNIT Supply Voltage to VSS P...