description: this document describes valueram's 64m x 64-bit (512mb) ddr2-667 cl5 sdram ( s ynchronous dram ) memory module. the components on this module include eight 64m x 8-bit (16m x 8-bit x 4 bank) ddr2-667 sdram in fbga packages. this 240-pin dimm uses gold contact fingers and requires +1.8v. the electrical and mechanical specifications are as follows: features: clock cycle time (tck) cl=5 3ns (min.) / 8ns (max.) row cycle time (t rc ) 54ns (min.) refresh to active/refresh command time (trfc) 105ns row active time (tras) 39ns (min.) / 70,000ns (max.) single power supply of +1.8v (+/- .1v) power 1.296 w (operating) ul rating 94 v - 0 document no. valueram0407-001.a00 04/21/05 figure 1: kvr667d2n5/512 240-pin dimm kvr667d2n5/512 512mb 64m x 64-bit ddr2-667 cl5 240-pin dimm 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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