Kingston KVR266X64SC25256 User Manual

Memory Module Specification

KVR266X64SC25/256

256MB 32M x 64-Bit DDR266

CL2.5 200-Pin SODIMM

DESCRIPTION:

This document describes ValueRAM's 32M x 64-bit (256MB) CL2.5 SDRAM (Synchronous
DRAM) DDR266 memory module. The components on this module include eight 16M x 16-bit
(4M x 16-bit x 4 Bank / 133MHz, 7.5ns, CL2.5) DDR266 SDRAM in TSOP packages. This
200-pin DIMM uses gold contact fingers and requires +2.5V. The electrical and mechanical
specifications are as follows:

FEATURES:

Clock Cycle Time (tCK) 7.5ns (min.) / 12ns (max.)
Row Cycle Time (tRC) 65ns (min.)
Refresh Row Cycle Time (tRFC) 75ns (min.)
Row Active Time (tRAS) 45ns (min.) / 120,000ns (max.)
Single Power Supply of +2.5V (+/- .25V)
Operating (IDD0) 2.350 W
UL Rating 94 V - 0

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).

2.70

(67.60)

2.50

0.16±0.039

±

0.10)

(4.00

0.157 Min

(4.00 Min)

0.24

(6.0)

0.086

2.15

0.098

2.45

0.150 Max
(3.80 Max)

0.157 Min

(4.00 Min)

0.04±0.0039
(1.00±0.10)

1

39 41

0.456

11.40

0.096

0.07

(1.8)

2

Units : Inches (Millimeters)

(2.40)

40 42

(63.60)

1.896

0.17

(4.20)

(47.40)

Tolerances : ±.006(.15) unless otherwise specified

Z Y

0.16±0.0039

±

0.10)

(4.00

±

0.0039

0.04

±

0.1)

(1.00

Detail Z

199

200

0.102 Min

(2.55 Min)

0.79
(20.00)

2-f0.07

(1.80)

Detail Y

Full R 2x

1.25
(31.75)

0.018
(0.45± 0.03)

0.024 TYP
(0.60 TYP)

±

0.01
(0.25)

0.001

Figure 1: KVR266X64SC25/256 200-Pin DDR SDRAM Module

Document No. VALUERAM0231-001.B00

05/06/02