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MCM72BA32 Datasheet(PDF) 1 Page - Motorola, Inc

Part # MCM72BA32
Description  256KB and 512KB BurstRAM Secondary Cache Module for Pentium
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MCM72BA32 Datasheet(HTML) 1 Page - Motorola, Inc

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MCM72BA32
•MCM72BA64
1
MOTOROLA FAST SRAM
256KB and 512KB BurstRAM
Secondary Cache Module for
Pentium
The MCM72BA32SG and MCM72BA64SG are designed to provide a burst-
able, high performance, 256K/512K L2 cache for the Pentium microprocessor.
The modules are configured as 32K x 72 and 64K x 72 bits in a 136 pin dual read-
out single inline memory module (DIMM). The module uses four of Motorola’s
MCM67B518 or MCM67B618 BiCMOS BurstRAMs.
Bursts can be initiated with either address status processor (ADSP) or address
status controller (ADSC). Subsequent burst addresses are generated internal to
the BurstRAM by the burst advance (ADV) input pin.
Write cycles are internally self timed and are initiated by the rising edge of the
clock (K) input. Eight write enables are provided for byte write control.
The cache family is designed to interface with popular Pentium cache control-
lers with on board TAG.
PD0 – PD2 are reserved for density and speed identification.
• Pentium–style Burst Counter on Board
• Dual Readout SIMM for Circuit Density
• Single 5 V ± 5% Power Supply
• All Inputs and Outputs are TTL Compatible
• Three State Outputs
• Byte Parity
• Byte Write Capability
• Fast Module Clock Rates: 66 MHz, 60 MHz, 50MHz
• Decoupling Capacitors for each Fast Static RAM
• High Quality Multi–Layer FR4 PWB With Separate Power and Ground Planes
• I/Os are 3.3 V Compatible
BurstRAM is a trademark of Motorola.
Pentium is a trademark of Intel Corp.
Order this document
by MCM72BA32/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MCM72BA32
MCM72BA64
68
35
34
1
136–LEAD DIMM
CASE 1104–01
TOP VIEW
REV 2
5/95
© Motorola, Inc. 1995


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