M68AW256DL datasheet(3/20 Pages) STMICROELECTRONICS

Part #	M68AW256DL

Description	4 Mbit (256K x16) 3.0V Asynchronous SRAM

PDF	20 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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M68AW256DL

SUMMARY DESCRIPTION

The M68AW256DL is a 4 Mbit (4,194,304 bit)

CMOS SRAM, organized as 262,144 words by 16

bits. The device features fully static operation re-

quiring no external clocks or timing strobes, with

equal address access and cycle times. It requires

a single 2.7 to 3.6V supply. This device has an au-

tomatic power-down feature, reducing the power

consumption by over 99% when deselected.

The M68AW256DL is available in TFBGA48

(0.75 mm pitch) and in TSOP44 Type II packages.

Figure 2. Logic Diagram

Table 1. Signal Names

AI05492

A0-A17

DQ0-DQ15

VCC

M68AW256DL

VSS

A0-A17

Address Inputs

DQ0-DQ15

Data Input/Out put

E1, E2

Chip Enables

Output Enable

Write Enable

Upper Byte Enable Input

Lower Byte Enable Input

VCC

Supply Voltage

VSS

Ground

Not Connected Internally

Don’t Use as Internally Connected

M68AW256DL Datasheet(PDF) 3 Page - STMicroelectronics