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MC-458CB646XFB-A10 Datasheet(PDF) 1 Page - Elpida Memory

Part # MC-458CB646XFB-A10
Description  8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE
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Manufacturer  ELPIDA [Elpida Memory]
Direct Link  http://www.elpida.com/en
Logo ELPIDA - Elpida Memory

MC-458CB646XFB-A10 Datasheet(HTML) 1 Page - Elpida Memory

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MOS INTEGRATED CIRCUIT
MC-458CB646
8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE
UNBUFFERED TYPE
DATA SHEET
Document No. E0063N10 (1st edition)
(Previous No. M13049EJ8V0DS00)
Date Published January 2001 CP (K)
Printed in Japan
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.
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 Elpida Memory, Inc. for
availability and additional information.
Description
The MC-458CB646EFB, MC-458CB646PFB and MC-458CB646XFB are 8,388,608 words by 64 bits synchronous
dynamic RAM module on which 4 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 64 bits organization
• Clock frequency and access time from CLK
Part number
/CAS latency
Clock frequency
Access time from CLK
(MAX.)
(MAX.)
MC-458CB646EFB-A80
CL = 3
125 MHz
6 ns
CL = 2
100 MHz
6 ns
MC-458CB646EFB-A10
CL = 3
100 MHz
6 ns
CL = 2
77 MHz
7 ns
MC-458CB646PFB-A80
CL = 3
125 MHz
6 ns
CL = 2
100 MHz
6 ns
MC-458CB646PFB-A10
CL = 3
100 MHz
6 ns
CL = 2
77 MHz
7 ns
MC-458CB646XFB-A80
CL = 3
125 MHz
6 ns
CL = 2
100 MHz
6 ns
MC-458CB646XFB-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 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
• All DQs have 10 Ω ± 10 % of series resistor
• Single 3.3 V ± 0.3 V power supply
This product became EOL in March, 2004.


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