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MC-45D32CC721KFA-C80 数据表(PDF) 1 Page - NEC |
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MC-45D32CC721KFA-C80 数据表(HTML) 1 Page - NEC |
1 / 6 page 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. © 2000 MOS INTEGRATED CIRCUIT MC-45D32CC721 Document No. M14900EJ1V0DS00 (1st edition) Date Published June 2000 NS CP(K) Printed in Japan PRELIMINARY DATA SHEET 32 M-WORD BY 72-BIT DDR SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE 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 |
类似零件编号 - MC-45D32CC721KFA-C80 |
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类似说明 - MC-45D32CC721KFA-C80 |
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