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  NEC Electronic Components Datasheet  


MC-458CB64ESB

8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM



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MC-458CB64ESB pdf
DATA SHEET
MOS INTEGRATED CIRCUIT
MC-458CB64ESB, 458CB64PSB
8M-WORD BY 64-BIT
SYNCHRONOUS DYNAMIC RAM MODULE (SO DIMM)
Description
The MC-458CB64ESB and MC-458CB64PSB are 8,388,608 words by 64 bits synchronous dynamic RAM module
(Small Outline DIMM) on which 4 pieces of 128M SDRAM: µPD45128163 are assembled.
These modules provide 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
/CAS Latency
Clock frequency
(MAX.)
MC-458CB64ESB-A10B
CL = 3
100 MHz
5 MC-458CB64PSB-A10B
CL = 2
CL = 3
CL = 2
67 MHz
100 MHz
67 MHz
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)
Programmable /CAS latency (2, 3)
Automatic precharge and controlled precharge
CBR (Auto) refresh and self refresh
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
144-pin small outline dual in-line memory module (Pin pitch = 0.8 mm)
Unbuffered type
Serial PD
Access time from CLK
(MIN.)
7 ns
8 ns
7 ns
8 ns
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. M12263EJAV0DS00 (10th edition)
Date Published February 2000 NS CP(K)
Printed in Japan
The mark shows major revised points.
©
1996



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MC-458CB64ESB, 458CB64PSB
Ordering Information
Part number
MC-458CB64ESB-A10B
5 MC-458CB64PSB-A10B
Clock frequency
MHz (MAX.)
100 MHz
100 MHz
Package
144-pin Small Outline DIMM
(Socket Type)
Edge connector: Gold plated
25.4 mm height
Mounted devices
4 pieces of µPD45128163G5 (Rev. E)
(10.16mm (400) TSOP (II))
4 pieces of µPD45128163G5 (Rev. P)
(10.16mm (400) TSOP (II))
2 Data Sheet M12263EJAV0DS00



Part Number MC-458CB64ESB
Description 8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM
Maker NEC - NEC
Total Page 16 Pages
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