description: this document describes valueram's 128m x 72-bit (1024mb), cas latency 2.5 sdram (synchronous dram) ddr266 ecc memory module. the components on this module include eighteen 64m x 8-bit (16m x 8-bit x 4 bank / 133mhz, 7.5ns, cl2.5 components) sdram in tsop packages. this 184-pin dimm uses gold contact fingers and requires +2.5v. the electrical and mechanical specifications are as follows: features: clock cycle time (tck) 7.5ns (min.) / 12ns (max.) row cycle time (t rc ) 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) power (idd0) 5.850 w (operating) ul rating 94 v - 0 document no. valueram0238-001.a00 04/24/02 figure 1: kvr266x72c25/1g 184-pin ddr sdram module kvr266x72c25/1g 1024mb 128 x 72-bit ddr266 cl2.5 ecc 184-pin dimm module
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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