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MC-45D32CC721KFA-C80 Datasheet(PDF) 1 Page - Elpida Memory

Part # MC-45D32CC721KFA-C80
Description  32 M-WORD BY 72-BIT DDR 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-45D32CC721KFA-C80 Datasheet(HTML) 1 Page - Elpida Memory

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MOS INTEGRATED CIRCUIT
MC-45D32CC721
Document No. E0033N10 (1st edition)
(Previous No. M14900EJ2V0DS00)
Date Published January 2001 CP (K)
Printed in Japan
PRELIMINARY DATA SHEET
32 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE
UNBUFFERED TYPE
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.
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.
Description
The MC-45D32CC721 is a 33,554,432 words by 72 bits DDR synchronous dynamic RAM module on which 18
pieces of 128M DDR SDRAM:
µPD45D128842 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-45D32CC721KFA-C75
CL = 2.5
133 MHz
DDR SDRAM
CL = 2
100 MHz
Unbuffered DIMM
MC-45D32CC721KFA-C80
CL = 2.5
125 MHz
Design specification
CL = 2
100 MHz
Rev.0.9 compliant
• 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
• 2.5 V ± 0.2 V Power supply for VDD
• 2.5 V ± 0.2 V Power supply for VDDQ
• SSTL_2 compatible with all signals
• 4,096 refresh cycles / 64 ms
• Burst termination by Precharge command and Burst stop command
• 184-pin dual in-line memory module (Pin pitch = 1.27 mm)
• Unbuffered type
• Serial PD


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