Kingston Technology 256MB 266MHz DDR Non-ECC CL2.5 DIMM KVR266X64C25/256 数据表

This document describes ValueRAM's 32M x 64-bit (256MB) DDR266 CL2.5 memory
module. The components on this module include eight 32M x 8-bit (8M x 8-bit x 4)  DDR266
SDRAM in TSOP packages. This 184-pin DIMM uses gold contact fingers and requires
+2.5V. The electrical and mechanical specifications are as follows:

Clock Cycle Time (tCK)

7.5ns (min.) / 12ns (max.)

Row Cycle Time (t

RC

)

65ns (min.)

Refresh Row Cycle Time (tRFC)

75ns (min.)

Row Active Time (tRAS)

45ns (min.) / 120,000ns (max.)

Single Power Supply of

+2.5V (+/- .2V)

Power

2.275 W (operating)

UL Rating

94 V - 0

Part No. VALUERAM0063-001.C00

02/07/05

1.250”

0.700”

0.393”

0.000”

0.000”

2.886”

5.250”

0.050

0.0078 ±0.006

(0.20 ±0.15)

(1.270)

0.

10

0

(2

.5

0

)

0.250

(6.350)

0.157

(4.00)

0.071

(1.80)

0.039 ± 0.002

(1.000 ± 0.050)

(3.80)

2.175

(6.62)

0.26

0.1496

(3.00)

0.118

(2.00)

0.0787

(4.00)

0.1575

(31.75)

(17.80)

(10.00)

(00.00)

(73.30)

(133.35)

Units : Inches (Millimeters)

1

(00.00)

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).