器件名称: W24257AK
功能描述: 32K X 8 High Speed CMOS Static RAM
文件大小: 226.65KB 共11页
简 介: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
VDD VSS
A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O1 I/O2 I/O3 V SS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 28-pin DIP
28 27 26 25 24 23 22 21 20 19 18 17 16 15
VDD WE A13 A8 A9 A11 OE A10 CS I/O8 I/O7 I/O6 I/O5 I/O4
A0 . . A14
DECODER
CORE ARRAY
CS OE WE CONTROL DATA I/O I/O1 . . I/O8
PIN DESCRIPTION
OE A11 A9 A8 A13 WE V DD A14 A12 A7 A6 A5 A4 A3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 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 V SS I/O3 I/O2 I/O1 A0 A1 A2
28-pin TSOP
SYMBOL A0A14 I/O1I/O8 CS WE OE VDD VSS
DESCRIPTION Address Inputs Data Inputs/Outputs Chip Select Input Write Enable Input Output Enable Input Power Supply Ground
-1-
Publication Release Date: May 1997 Revision A14
W24257A
DC CHARACTERISTICS
Absolute Maximum Ratings
PARAMETER Supply Voltage to VSS Potential Input/Output to VSS Potential Allowable Power Dissi……
