Kingston Technology 256MB, 333MHz, DDR SDRAM, ValueRAM, Memory Module, ValueRAM KVR333/256R 数据表

This document describes ValueRAM's 32M x 64-bit (256MB) DDR333 CL2.5 SDRAM
(Synchronous DRAM) memory module. The components on this module include eight
32M x 8-bit (8M x 8-bit x 4 Bank ) DDR333 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)

6ns (min.) / 12ns (max.)

Row Cycle Time (t

RC

)

60ns (min.)

Refresh Row Cycle Time (tRFC)

72ns (min.)

Row Active Time (tRAS)

42ns (min.) / 70,000ns (max.)

Single Power Supply of

+2.5V (+/- .2V)

Power (IDD0)

1.800 W (operating)

UL Rating

94 V - 0

Document No. VALUERAM0323-001.A00

02/02/04

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).

1.200

(30.48)