This document describes ValueRAM's 256M x 64-bit (2GB) DDR2-800 CL6 SDRAM (Synchronous DRAM) 2Rx8 memory module, based on sixteen 128M x 8-bit FBGA components. This 240-pin DIMM uses gold contact fingers and requires +1.8V. The electrical and mechanical specifications are as follows:  
SPECIFICATIONS
Clock Cycle Time (tCK) 2.5ns (min.) / 8ns (max.)
Row Cycle Time (tRCmin) 60ns (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 2.016 W (Approx.*)
UL Rating 94 V - 0
*Power will vary depending on the SDRAM used.