DDR2 is the next step to higher performance DDR technology.  DDR2 can boost performance with greater clock frequency and available bandwidth without increasing power consumption.

DDR2 Features

• VDD = 1.8V, VDDQ = 1.8V
• I/O = SSTL_18
• 400 Mb/s/pin and 533 Mb/s/pin data rates
• 3,200 MB/s and 4,300 MB/s for 64-bit systems
• 4 n data prefetch
• 4 banks for 256Mb and 512Mb densities
• 8 banks for 1Gb and 2Gb densities
• Burst length of 4 or 8
• WRITE latency = READ latency - 1 clock
• Differential data strobe option
• Duplicate RDQS data strobe option
• READ latency: 3, 4, and 5
• Posted CAS# additive latency: 0, 1, 2, 3, and 4 clocks
• On-die termination (ODT)
• Off-chip driver (OCD) output impedance calibration option

Module Specification