Memory Module Specification
DESCRIPTION:
This document describes ValueRAM's CL3 32M x 64-bit (256MB) SDRAM (Synchronous
DRAM) PC133 Small Outline DIMM memory module. The components on this module include
sixteen 16M x 8-bit (4M x 8-bit x 4 Bank / PC133 components) 4K Refresh SDRAM inUBGA
packages. This 144-pin SODIMM uses gold contact fingers and requires +3.3V. The electrical
and mechanical specifications are as follows:
FEATURES:
CLK Cycle Time (tCC) min. = 7.5ns (CAS Latency = 3) / max. = 1000ns
Row Cycle Time (tRC) 65ns
CLK to Output (tSAC) max. = 5.4ns (CAS Latency = 3)
Single Power Supply of +3.3V (+/- .3V)
Power 3.168 W (operating)
UL Rating 94 V - 0
Document No. VALUERAM0206-001.B00
03/05/02
KVR133X64SC3L/256
PC133 SDRAM 144-Pin CL3
SODIMM Memory Module
Figure 1: KVR133X64SC3L/256 144-Pin SDRAM Module
Tolerances : ±.006(.15) unless otherwise specified
Units : Inches (Millimeters)
2.66
2.50
2-R 0.078 Min
(2.00 Min)
0.18
(4.60)
0.91
(23.20)
1.29
(32.80)
0.24
(6.0)
0.13
0.79
(20.00)
(3.30)
(63.60)
(67.56)
2-
f
0.07
(1.80)
1.00
(25.40)
0.16
±
0.039
(4.00
±
0.10)
0.083
(2.10)
0.10
(2.50)
15961 143
Z Y
0.15
(3.70)
26062 144
0.03 TYP
0.024
±
0.001
0.01 Max
(0.25 Max)
(0.60
±
0.05)
(0.80 TYP)
0.10 Min
(2.55 Min)
Detail YDetail Z
0.16
±
0.0039
(4.00
±
0.10)
0.06
±
0.0039
(1.50
±
0.1)
0.150 Max
0.04
±
0.0039
(1.00
±
0.10)
0.125 Min
(3.20 Min)
(3.80 Max)
0.157 Min
(4.00 Min)
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).
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