器件名称: W24L257
功能描述: 32K X 8 High Speed CMOS Static RAM
文件大小: 209.3KB 共9页
简 介:W24L257A 32K × 8 HIGH-SPEED CMOS STATIC RAM
GENERAL DESCRIPTION
The W24L257A is a high-speed, low-power CMOS static RAM organized as 32768 × 8 bits that operates on a single 3.3-volt power supply. This device is manufactured using Winbond's high performance CMOS technology.
FEATURES
High-speed access time: 12/15/20 nS (max.) Low-power consumption: Active: 200 mW (typ.) Single +3.3V power supply Fully static operation
All inputs and outputs directly TTL compatible Three-state outputs Available packages: 28-pin 300 mil SOJ, skinny DIP and standard type one TSOP (8 mm × 13.4 mm)
PIN CONFIGURATION
BLOCK DIAGRAM
VDD
A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O1 I/O2 I/O3 VSS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 28-DIP
28 27 26 25 24 23 22 21 20 19 18 17 16 15
VDD WE A13 A8 A9 A11 OE
V SS A0 . . A14 DECODER CORE ARRAY ARRAY
CS
A10 CS I/O8 I/O7 I/O6 I/O5 I/O4
OE WE
CONTROL
DATA I/O
I/O1 . . I/O8
PIN DESCRIPTION
SYMBOL DESCRIPTION Address Inputs Data Inputs/Outputs Chip Select Input Write Enable Input Output Enable Input Power Supply Ground A0A14 I/O1I/O8 CS WE OE VDD VSS
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 27 26 25 24 23 22 21 20 19 18 17 16 15
A10 CS I/O8 I/O7 I/O6 I/O5 I/O4 VSS I/O3 I/O2 I/O1 A0 A1 A2
-1-
Publication Release Date: December 1996 Revision A5
W24L257A
TRUTH TABLE
CS H L L L OE X H L X WE X H H L MODE Not Selected Output Disable Read Write I/O1I/O8 High Z High Z Data Out Data In VDD CURREN……
