Transcend JetRam High-Performance 1GB DDR2-800

The JM800QLU-1G is a 128M x 64bits DDR2-800 Unbuffered DIMM. The JM800QLU-1G consists of 8 pcs 128Mx8bits DDR2 SDRAMs in FBGA packages and a 2048 bits serial EEPROM on a 240-pin printed circuit board. The JM800QLU-1G is a Dual In-Line Memory Module and is intended for mounting into 240-pin edge connector sockets.

Synchronous design allows precise cycle control with the use of system clock. Data I/O transactions are possible on both edges of DQS. Range of operation frequencies, programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.

Features

JEDEC standard 1.8V ¿¿ 0.1V Power supply

VDDQ=1.8V ¿¿ 0.1V

Max clock Freq: 400MHZ; 800Mb/S/Pin.

Posted CAS

Programmable CAS Latency: 4, 5, 6

Programmable Additive Latency :0, 1, 2, 3, 4, 5

Write Latency (WL) = Read Latency (RL)-1

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

Programmable sequential / Interleave Burst Mode

Bi-directional Differential Data-Strobe (Single-ended

data-strobe is an optional feature)

Off-Chip Driver (OCD) Impedance Adjustment

MRS cycle with address key programs.

On Die Termination

Refresh: Auto Refresh and Self Refresh

Average Refresh Period:

7.8us at lower then TCASE85

Serial presence detect with EEPROM

RoHS compliant products. ¿¿C