DESCRIPTION

The WED3DG6418S is a 16Mx64 Double Data Rate SDRAM memory module based on 128Mb DDR SDRAM component. The module consists of eight 16Mx8 DDR SDRAMs in 66 pin TSOP package mounted on a 200 Pin FR4 substrate.

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

FEATURES

■ Double-data-rate architecture

■ Speed of 100MHz, 133MHz and 166MHz

■ Bi-directional data strobes (DQS)

■ Differential clock inputs (CK & CK#)

■ Programmable Read Latency 2,2,5 (clock)

■ Programmable Burst Length (2,4,8)

■ Programmable Burst type (sequential & interleave)

■ Edge aligned data output, center aligned data input

■ Auto and self refresh

■ Serial presence detect

■ JEDEC standard 200 pin SO-DIMM package

■ Power Supply: 2.5V ± 0.25V