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MC-458CB641PS-A10 Scheda tecnica(PDF) 1 Page - NEC

Il numero della parte MC-458CB641PS-A10
Spiegazioni elettronici  8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM
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MC-458CB641PS-A10 Scheda tecnica(HTML) 1 Page - NEC

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©
1999
MOS INTEGRATED CIRCUIT
MC-458CB641ES, 458CB641PS
8M-WORD BY 64-BIT
SYNCHRONOUS DYNAMIC RAM MODULE (SO DIMM)
Document No. M14015EJ4V0DS00 (4th edition)
Date Published February 2000 NS CP(K)
Printed in Japan
DATA SHEET
The mark
• shows major revised points.
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.
Description
The MC-458CB641ES and MC-458CB641PS 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.)
Access time from CLK (MAX.)
MC-458CB641ES-A80
CL = 3
125 MHz
6 ns
CL = 2
100 MHz
6 ns
MC-458CB641ES-A10
CL = 3
100 MHz
6 ns
CL = 2
77 MHz
7 ns
MC-458CB641PS-A80
CL = 3
125 MHz
6 ns
CL = 2
100 MHz
6 ns
MC-458CB641PS-A10
CL = 3
100 MHz
6 ns
CL = 2
77 MHz
7 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, 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 3.3V ±0.3V 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
5
5


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