Detailed Product Description

ddr memory module

Specification :
 DDR2 667MHZ-PC6400 
200PIN (SO-DIMM)  socket type dual in line memory module (DIMM)
2.6V power supply
Data rate: 400Mbps (max.)
2.5 V (SSTL_2 compatible) I/O
Double Data Rate architecture; two data transfers per clock cycle
Bi-directional, data strobe (DQS) is transmitted/received with data, to be used in capturing data at the receiver
Data inputs and outputs are synchronized with DQS
DQS is edge aligned with data for READs; center aligned with data for WRITEs
Differential clock inputs (CK and /CK)
DLL aligns DQ and DQS transitions with CK transitions
Commands entered on each positive CK edge; data referenced to both edges of DQS
Auto precharge option for each burst access
Programmable burst length: 2, 4, 8
Programmable /CAS latency (CL): 3
Programmable output driver strength: normal/weak
Refresh cycles: (8192 refresh cycles /64ms)
7.8us maximum average periodic refresh interval
2 variations of refresh
Auto refresh
Self refresh