Memory Module Specification
DESCRIPTION:
This document describes ValueRAM's 32M x 64-bit (256MB) CL4 DDR2-533 SDRAM
(Synchronous DRAM) memory module. The components on this module include four
32M x 16-bit (8M x 16-bit x 4 Bank) DDR2-533 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=4 3.75ns (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 0.864 W (operating)
UL Rating 94 V - 0
Document No. VALUERAM0335-001.C00
09/09/04
Figure 1: KVR533D2N4/256 240-Pin DIMM
KVR533D2N4/256
256MB 32M x 64-Bit DDR2-533
CL4 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).
131.35
Units : Millimeters
133.35
10.00
128.95
(2)
2.50
(2X)4.00
30.00
2.30
17.80
SPD
2.50
1.00
0.20
2.50±0.20
Detail B
5.00
Detail A
4.00
1.50±0.10
0.80±0.05
4.00
3.80
3.00
4.00
1.270 ± 0.10
2.7
A
B
63.00
55.00
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