MC-45V8AB641 查看數據表（PDF） - NEC => Renesas Technology

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MC-45V8AB641

8M-WORD BY 64-BIT VirtualChannel™ SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE

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DATA SHEET

MOS INTEGRATED CIRCUIT

MC-45V8AB641

8M-WORD BY 64-BIT

VirtualChannelTM SYNCHRONOUS DYNAMIC RAM MODULE

UNBUFFERED TYPE

Description

The MC-45V8AB641 is a 8,388,608 words by 64 bits VirtualChannel synchronous dynamic RAM module on which 4

pieces of 128M VirtualChannel SDRAM : µPD45125161 are assembled.

This module provides high density and large quantities of memory in a small space without utilizing the surface-

mounting technology on the printed circuit board.

Decoupling capacitors are mounted on power supply line for noise reduction.

Features

• 8,388,608 words by 64 bits organization

• Clock frequency and access time from CLK

Part number

Read Clock

Access

Maximum supply current mA

latency frequency time

Operating

MHz (MAX.) from CLK Prefetch Restore

Channel

ns (MAX.)

read / write (Burst)

• MC-45V8AB641KFA-A75 2

133

5.4

600

300

• MC-45V8AB641KFA-A10

100

6

520

300

Refresh

Auto

Self

920

8

880

• Fully Standard Synchronous Dynamic RAM, with all signals referenced to a positive clock edge

• Dual internal banks controlled by BA0 (Bank Select)

• Programmable wrap sequence (sequential / interleave)

• Programmable burst length (1, 2, 4, 8 and 16)

• • Read latency (2)

• • Prefetch read latency (4)

• Auto precharge and without auto precharge

• Auto refresh and self refresh

• Single 3.3 V ± 0.3 V power supply

• Interface: LVTTL

• Refresh cycle: 4K cycles/64 ms

• 168-pin dual in-line memory module (Pin pitch = 1.27 mm)

• Unbuffered type

• Serial PD

The information in this document is subject to change without notice. Before using this document, please

confirm that this is the latest version.

Not all devices/types available in every country. Please check with local NEC representative for

availability and additional information.

Document No. M14619EJ2V0DS00 (2nd edition)

The mark • shows major revised points.

Date Published June 2000 NS CP (K)

Printed in Japan

©

1999

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