kingston KHX6400S2ULK2-4G User Manual

Memory Module Specifi cations

KHX6400S2ULK2/4G

4GB (2GB 256M x 64-Bit x 2 pcs.)
PC2-6400 CL4 200-Pin SODIMM Kit

SPECIFICATIONS

Clock Cycle Time (tCK) 2.5ns (min.) / 8ns (max.)
Row Cycle Time (tRCmin) 57.5ns (min.)
Refresh to Active/Refresh 127.5ns (min.)

Command Time (tRFCmin)
Row Active Time (tRASmin) 45ns (min.) / 70,000 (max.)

Single Power Supply of +1.8V (+/- .1V)
Power (Operating) TBD* (per module)
UL Rating 94 V - 0

Operating Temperature 0o C to 55o C

o

Storage Temperature -55

C to +125o C

DESCRIPTION

Kingston's KHX6400S2ULK2/4G is a kit of two 256M x 64-bit
(2GB) CL4 ultra low latency SDRAM (Synchronous DRAM)
2Rx8 memory modules. Each module is based on sixteen 128M
x 8-bit DDR2 FBGA components. Total kit capacity is 4GB. The
SPDs are programmed to JEDEC ultra low latency timing of 4­4-4-12 at 1.8V. Each 200-pin SODIMM uses gold contact
fingers and requires +1.8V. The electrical and mechanical
specifications are as follows:

*Power will vary depending on the SDRAM used.

FEATURES

• Power supply : Vdd: 1.8V ± 0.1V, Vddq: 1.8V ± 0.1V

• Double-data-rate architecture; two data transfers per

clock cycle

• Bidirectional data strobe(DQS)

• Differential clock inputs(CK and CK)

• DLL aligns DQ and DQS transition with CK transition

• Programmable Read latency 4, 3 (clock)

• Burst Length: 4, 8 (Interleave/nibble sequential)

• Programmable Burst type (sequential & interleave)

• Timing Reference: 4-4-4-12 at +1.8V

• Edge aligned data output, center aligned data input

• Auto & Self refresh, 7.8us refresh interval (8K/64ms

refresh)

• Serial presence detect with EEPROM

• PCB : Height 1.180” (30.00mm), double sided

component

Continued >>

Document No. 4805074-001.B00 06/30/11 Page 1

continued HyperX

MODULE DIMENSIONS

30.00

20.00

6.00

4.00

0.00

0.00

1.000

2.00

(units = millimeters)

R 2.00 X 2

FULL RAD.

CHAMFER 0.50 X 2

16.250

MODULE WITH HEAT SPREADER

1.80 DIA. NPTH X 2

67.60

65.60

FOR MORE INFORMATION, GO TO WWW.KINGSTON.COM

All Kingston products are tested to meet our published specifications. Some motherboards or system configurations may not operate at
the published HyperX memory speeds and timing settings. Kingston does not recommend that any user attempt to run their computers
faster than the published speed. Overclocking or modifying your system timing may result in damage to computer components.

Document No. 4805074-001.B00 Page 2