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Memory Module Specification

DESCRIPTION:

This document describes ValueRAM's 256M x 72-bit 2GB (2048MB) DDR2-400 CL3

SDRAM (Synchronous DRAM) "single rank" registered ECC memory module.The compo-

nents on this module include eighteen 256M x 4-bit (64M x 4-bit x 4 Bank) DDR2-400

SDRAM in FBGA packages. This 240-pin DIMM uses gold contact fingers and requires

+1.8V. The electrical and mechanical specifications are as follows:

FEATURES:

Clock Cycle Time (tCK) CL=3 5ns (min.) / 8ns (max.)

Row Cycle Time (tRC) 60ns (min.)

Refresh to Active/Refresh Command Time (tRFC) 127.5ns

Row Active Time (tRAS) 45ns (min.) / 70,000ns (max.)

Single Power Supply of +1.8V (+/- .1V)

Power 3.888 W (operating)

UL Rating 94 V - 0

Document No. VALUERAM0393-001.A00

03/22/05

Figure 1: KVR400D2S4R3/2G 240-Pin DIMM

KVR400D2S4R3/2G

2GB 256M x 72-Bit DDR2-400

CL3 Registered 240-Pin ECC DIMM

Note: The module defined in this data sheet is one of several configurations available under this part number. While

all configurations are compatible, the DRAM combination and/or the module height may vary from what is described

here. However, in no configuration will the module height exceed 1.250" (31.75mm).

(Units = millimeters)

Memory Module SpecificationDESCRIPTION:This document describes ValueRAM's 256M x 72-bit 2GB (2048MB) DDR2-400 CL3SDRAM (Synchronous DRAM) "s

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Kingston Technology KVR400D2S4R3/2G Scheda Tecnica