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  NEC Electronic Components Datasheet  


MC-458CA727

8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE


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MC-458CA727 pdf
DATA SHEET
MOS INTEGRATED CIRCUIT
MC-458CA727
8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE
UNBUFFERED TYPE
5 Description
The MC-458CA727EFA and MC-458CA727PFA are 8,388,608 words by 72 bits synchronous dynamic RAM module
on which 5 pieces of 128M SDRAM : µPD45128163 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 72 bits organization (ECC Type)
Clock frequency and access time from CLK
Part number
/CAS latency
Clock frequency
(MAX.)
Access time from CLK
(MAX.)
MC-458CA727EFA-A75
5
5 MC-458CA727PFA-A75
5
CL = 3
CL = 2
CL = 3
CL = 2
133 MHz
100 MHz
133 MHz
100 MHz
5.4 ns
6.0 ns
5.4 ns
6.0 ns
Fully Synchronous Dynamic RAM, with all signals referenced to a positive clock edge
Pulsed interface
Possible to assert random column address in every cycle
Quad internal banks controlled by BA0 and BA1 (Bank Select)
Programmable burst-length (1, 2, 4, 8 and full page)
Programmable wrap sequence (sequential / interleave)
5 Programmable /CAS latency (2, 3)
Automatic precharge and controlled precharge
CBR (Auto) refresh and self refresh
All DQs have 10 Ω ± 10 % of series resistor
Single 3.3 V ± 0.3 V power supply
LVTTL compatible
4,096 refresh cycles /64 ms
Burst termination by Burst Stop command and Precharge command
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. M14278EJ3V0DS00 (3rd edition)
Date Published January 2000 NS CP(K)
Printed in Japan
The mark shows major revised points.
©
1999



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MC-458CA727
Ordering Information
Part number
Clock frequency
(MAX.)
Package
MC-458CA727EFA-A75
5 MC-458CA727PFA-A75
133 MHz
168-pin Dual In-line Memory Module
(Socket Type)
Edge connector : Gold plated
25.4 mm height
Mounted devices
5 pieces of µPD45128163G5 (Rev. E)
(10.16 mm (400) TSOP (II))
5 pieces of µPD45128163G5 (Rev. P)
(10.16 mm (400) TSOP (II))
2 Data Sheet M14278EJ3V0DS00



Part Number MC-458CA727
Description 8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE
Maker NEC - NEC
Total Page 16 Pages
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