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  NEC Electronic Components Datasheet  


MC-45V8AB641

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


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MC-45V8AB641 pdf
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)
Date Published June 2000 NS CP (K)
Printed in Japan
The mark shows major revised points.
©
1999



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MC-45V8AB641
Ordering Information
Part number
MC-45V8AB641KFA-A75
MC-45V8AB641KFA-A10
Clock
frequency
MHz (MAX.)
133
100
Read
latency
2
Prefetch
read
latency
Package
4 168-pin Dual In-line
Memory Module (Socket Type)
Edge connector : Gold plated
25.53 mm height
Mounted devices
4 pieces of µPD45125161G5
(10.16 mm (400) TSOP (II))
2 Data Sheet M14619EJ2V0DS00



Part Number MC-45V8AB641
Description 8M-WORD BY 64-BIT VirtualChannel SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE
Maker NEC - NEC
Total Page 16 Pages
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