Kingston KVR266X72C251G User Manual

Memory Module Specification

KVR266X72C25/1G

1024MB 128 x 72-Bit DDR266

CL2.5 ECC 184-Pin DIMM Module

DESCRIPTION:

This document describes ValueRAM's 128M x 72-bit (1024MB), CAS Latency 2.5 SDRAM
(Synchronous DRAM) DDR266 ECC memory module. The components on this module
include eighteen 64M x 8-bit (16M x 8-bit x 4 Bank / 133MHz, 7.5ns, CL2.5 components)
SDRAM in TSOP packages. This 184-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)
Power (IDD0) 5.850 W (operating)
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).

1.250

(31.75)

(17.80)

0.700

0.393

(10.00)

0.000

(00.00)

1

0.000

(00.00)

0.26

(6.62)

2.175

0.250

(6.350)

0.071
(1.80)

0.157
(4.00)

Units : Inches (Millimeters)

0.1496
(3.80)

2.886

(73.30)

0.118

0.0787
(2.00)

0.1575

(3.00)

(4.00)

0.039 ± 0.002

(2.50 )

(1.000 ± 0.050)

0.0078 ±0.006

(0.20 ±0.15)

0.050

(1.270)

0.100

5.250
(133.35)

Figure 1: KVR266X72C25/1G 184-Pin DDR SDRAM Module

Document No. VALUERAM0238-001.A00

04/24/02