MCM63Z737

DMCM63Z819

1

MOTOROLA FAST SRAM

Advance Information

128K x 36 and 256K x 18 Bit

Flow–Through ZBT

™ RAM

Synchronous Fast Static RAM

The ZBT RAM is a 4M–bit synchronous fast static RAM designed to provide

zero bus turnaround. The ZBT RAM allows 100% use of bus cycles during

back–to–back read/write and write/read cycles. The MCM63Z737 is organized

as 128K words of 36 bits each and the MCM63Z819 is organized as 256K words

of 18 bits each, fabricated with high performance silicon gate CMOS technology.

This device integrates input registers, a 2–bit address counter, and high speed

SRAM onto a single monolithic circuit for reduced parts count in communication

applications. Synchronous design allows precise cycle control with the use of an

external clock (CK). CMOS circuitry reduces the overall power consumption of

the integrated functions for greater reliability.

Addresses (SA), data inputs (DQ), and all control signals except output enable

(G) and linear burst order (LBO) are clock (CK) controlled through positive–

edge–triggered noninverting registers.

Write cycles are internally self–timed and are initiated by the rising edge of the

clock (CK) input. This feature eliminates complex off–chip write pulse generation

and provides increased timing flexibility for incoming signals.

For read cycles, a flow–through SRAM allows output data to simply flow freely

from the memory array.

• 3.3 V LVTTL and LVCMOS Compatible

• MCM63Z737/MCM63Z819–11 = 11 ns Access/15 ns Cycle (66 MHz)

MCM63Z737/MCM63Z819–15 = 15 ns Access/20 ns Cycle (50 MHz)

• Selectable Burst Sequencing Order (Linear/Interleaved)

• Internally Self–Timed Write Cycle

• Single–Cycle Deselect

• Byte Write Control

• ADV Controlled Burst

• 100–Pin TQFP Package

ZBT and Zero Bus Turnaround are trademarks of Integrated Device Technology, Inc., and the architecture is supported by

Micron Technology, Inc. and Motorola, Inc.

This document contains information on a new product. Specifications and information herein are subject to change without notice.

Order this document

by MCM63Z737/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MCM63Z737

MCM63Z819

TQ PACKAGE

TQFP

CASE 983A–01

2/6/98