DESCRIPTION:This document describes ValueRAM's 64M x 64-bit (512MB) CL2.5 SDRAM (SynchronousDRAM) DDR266 memory module. The components on this module include sixteen32M x 8-bit (8M x 8-bit x 4 Bank / 133MHz, 7.5ns, CL2.5) DDR266 SDRAM in uBGApackages. This 200-pin DIMM uses gold contact fingers and requires +2.5V. The electricaland mechanical specifications are as follows:FEATURES:Clock Cycle Time (tCK)7.5ns (min.) / 12ns (max.)Row Cycle Time (tRC)65ns (min.)Refresh Row Cycle Time (tRFC)75ns (min.)Row Active Time (tRAS)45ns (min.) / 120,000ns (max.)Single Power Supply of+2.5V (+/- .25V)Operating (IDD0)2.900 WUL Rating94 V - 0Document No. VALUERAM0249-001.A0006/12/02Figure 1: KVR266X64SC25/512 200-Pin DDR266KVR266X64SC25/512512MB 64M x 64-Bit DDR266CL2.5 200-Pin SODIMMNote: The module defined in this data sheet is one of several configurations available under this part number. Whileall configurations are compatible, the DRAM combination and/or the module height may vary from what is describedhere. However, in no configuration will the module height exceed 1.250" (31.75mm).