description: this document describes valueram's 64m x 64-bit (512mb) ddr333 cl2.5 sdram (synchronous dram) memory module. the components on this module include sixteen 32m x 8-bit (8m x 8-bit x 4 bank) ddr333 sdram sealed in ubga packages. this 200- pin dimm uses gold contact fingers and requires +2.5v. the electrical and mechanical specifications are as follows: features: clock cycle time (tck) 6ns (min.) / 12ns (max.) row cycle time (t rc ) 60ns (min.) refresh row cycle time (trfc) 72ns (min.) row active time (tras) 42ns (min.) / 70,000ns (max.) single power supply of +2.5v (+/- .25v) operating (idd0) 3.525 w ul rating 94 v - 0 document no. valueram0300-001.a00 06/13/03 figure 1: kvr333x64sc25/512 200-pin sodimm kvr333x64sc25/512 512mb 64m x 64-bit ddr333 cl2.5 200-pin sodimm note: the module defined in this data sheet is one of several configurations available under this part number. while all configurations are compatible, the dram combination and/or the module height may vary from what is described here. however, in no configuration will the module height exceed 1.250" (31.75mm).
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