Kingston KVR400D2N3-256 User Manual

Memory Module Specification

KVR400D2N3/256

256MB 32M x 64-Bit DDR2-400

DESCRIPTION:

This document describes ValueRAM's 32M x 64-bit (256MB) DDR2-400 CL3 SDRAM
(S ynchronous DRAM) memory module. The components on this module include four
32M x 16-bit (8M x 16-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) 55ns (min.)
Refresh to Active/Refresh Command Time (tRFC) 75ns
Row Active Time (tRAS) 40ns (min.) / 70,000ns (max.)
Single Power Supply of +1.8V (+/- .1V)
Power 0.828 W (operating)
UL Rating 94 V - 0

CL3 240-Pin 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).

4.00

10.00

5.00

(2)

2.50

63.00

4.00

3.80

133.35

131.35

128.95

A

2.50±0.20

SPD

B

55.00

0.80±0.05

0.20

(2X)4.00

2.30

3.00

Units : Millimeters

30.00

17.80

2.7

1.270 ± 0.10

2.50

1.50±0.10

Detail A

Figure 1: KVR400D2N3/256 240-Pin DIMM

Document No. VALUERAM0361-001.A00

1.00

Detail B

4.00

10/11/04