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MC-45D32DA721KFA-C75 데이터시트(PDF) 1 Page - Elpida Memory

부품명 MC-45D32DA721KFA-C75
상세설명  32 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE REGISTERED TYPE
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제조업체  ELPIDA [Elpida Memory]
홈페이지  http://www.elpida.com/en
Logo ELPIDA - Elpida Memory

MC-45D32DA721KFA-C75 데이터시트(HTML) 1 Page - Elpida Memory

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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.
MOS INTEGRATED CIRCUIT
MC-45D32DA721
Document No. E0037N10 (1st edition)
(Previous No. M14825EJ2V0DS00)
Date Published January 2001 CP (K)
Printed in Japan
PRELIMINARY DATA SHEET
32 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE
REGISTERED TYPE
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.
Description
The MC-45D32DA721 is a 33,554,432 words by 72 bits DDR synchronous dynamic RAM module on which 18
pieces of 128M DDR SDRAM:
µPD45D128442 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
• 33,554,432 words by 72 bits organization (ECC type)
• Clock frequency
Part number
/CAS latency
Clock frequency
Module type
(MAX.)
MC-45D32DA721KF-C75
CL = 2.5
133 MHz
DDR Registered DIMM
CL = 2
100 MHz
Design specification Rev. 0.6 compliant
MC-45D32DA721KF-C80
CL = 2.5
125 MHz
CL = 2
100 MHz
MC-45D32DA721KFA-C75
CL = 2.5
133 MHz
DDR Registered DIMM
CL = 2
100 MHz
Design specification Rev. 0.9 compliant
MC-45D32DA721KFA-C80
CL = 2.5
125 MHz
CL = 2
100 MHz
• Fully Synchronous Dynamic RAM with all signals except DM, DQS and DQ referenced to a positive clock edge
• Double Data Rate interface
Differential CLK (/CLK) input
Data inputs and DM are synchronized with both edges of DQS
Data outputs and DQS are synchronized with a cross point of CLK and /CLK
• Quad internal banks operation
• Possible to assert random column address in every clock cycle
• Programmable Mode register set
/CAS latency (2, 2.5)
Burst length (2, 4, 8)
Wrap sequence (Sequential / Interleave)
• Automatic precharge and controlled precharge
• CBR (Auto) refresh and self refresh


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