description: this document describes valueram's 64m x 72-bit (512mb), cas latency 2.5 sdram (synchronous dram) ddr266 ecc memory module. the components on this module include eighteen 32m x 8-bit (8m 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.) / 15ns (max.) row cycle time (t rc ) 65ns (min.) refresh row cycle time (trfc) 75ns (min.) row active time (tras) 45ns (min.) / 12,000ns (max.) single power supply of +2.5v (+/- .25v) power 4.950 w (operating) ul rating 94 v - 0 part no. valueram0122-001.a00 03/16/01 figure 1: kvr266x72c25/512 184-pin ddr sdram module kvr266x72c25/512 ddr266 sdram 184-pin ecc dual in-line memory module (dimm)
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