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MCM63P531 Datasheet(PDF) 1 Page - Motorola, Inc

No. de pieza MCM63P531
Descripción Electrónicos  32K x 32 Bit Pipelined BurstRAM Synchronous Fast Static RAM
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Fabricante Electrónico  MOTOROLA [Motorola, Inc]
Página de inicio  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MCM63P531 Datasheet(HTML) 1 Page - Motorola, Inc

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MCM63P531
1
MOTOROLA FAST SRAM
Advance Information
32K x 32 Bit Pipelined BurstRAM
Synchronous Fast Static RAM
The MCM63P531 is a 1M bit synchronous fast static RAM designed to provide
a burstable, high performance, secondary cache for the 68K Family, PowerPC
™,
and Pentium
™ microprocessors. It is organized as 32K words of 32 bits each,
fabricated using high performance silicon gate CMOS technology. This device
integrates input registers, an output register, a 2–bit address counter, and high
speed SRAM onto a single monolithic circuit for reduced parts count in cache
data RAM applications. Synchronous design allows precise cycle control with the
use of an external clock (K). CMOS circuitry reduces the overall power consump-
tion of the integrated functions for greater reliability.
Addresses (SA), data inputs (DQx), and all control signals except output en-
able (G) and Linear Burst Order (LBO) are clock (K) controlled through positive–
edge–triggered noninverting registers.
Bursts can be initiated with either ADSP or ADSC input pins. Subsequent burst
addresses can be generated internally by the MCM63P531 (burst sequence op-
erates in linear or interleaved mode dependent upon state of LBO) and controlled
by the burst address advance (ADV) input pin.
Write cycles are internally self–timed and are initiated by the rising edge of the
clock (K) input. This feature eliminates complex off–chip write pulse generation
and provides increased timing flexibility for incoming signals.
Synchronous byte write (SBx), synchronous global write (SGW), and synchro-
nous write enable SW are provided to allow writes to either individual bytes or to
all bytes. The four bytes are designated as “a”, “b”, “c”, and “d”. SBa controls
DQa, SBb controls DQb, etc. Individual bytes are written if the selected byte
writes SBx are asserted with SW. All bytes are written if either SGW is asserted
or if all SBx and SW are asserted.
For read cycles, pipelined SRAMs output data is temporarily stored by an
edge–triggered output register and then released to the output buffers at the next
rising edge of clock (K).
The MCM63P531 operates from a 3.3 V power supply, all inputs and outputs
are LVTTL compatible.
• MCM63P531–4.5 = 4.5 ns access / 10 ns cycle
MCM63P531–7 =
7 ns access
/ 13.3 ns cycle
MCM63P531–8 =
8 ns access
/ 15 ns cycle
MCM63P531–9 =
9 ns access
/ 16.6 ns cycle
• Single 3.3 V + 10%, – 5% Power Supply
• ADSP, ADSC, and ADV Burst Control Pins
• Selectable Burst Sequencing Order (Linear/Interleaved)
• Internally Self–Timed Write Cycle
• Byte Write and Global Write Control
• Sleep Mode (ZZ)
• Intel PBSRAM 2.0 Compliant
• Single–Cycle Deselect Timing
• 100 Pin TQFP Package
BurstRAM is a trademark of Motorola, Inc.
PowerPC is a trademark of IBM Corp.
Pentium is a trademark of Intel Corp.
This document contains information on a new product. Motorola reserves the right to change or discontinue this product without notice.
Order this document
by MCM63P531/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MCM63P531
TQ PACKAGE
TQFP
CASE 983A–01
6/21/96
© Motorola, Inc. 1996


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