description: this document describes valueram's 32m x 72-bit (256mb) cas latency 3 (cl3) registered sdram (synchronous dram) pc133 low profile memory module. the com- ponents on this module include nine 32m x 8-bit (8m x 8-bit x 4 bank) pc133 sdram in tsop packages. this 168-pin dimm uses gold contact fingers and requires +3.3v. the electrical and mechanical specifications are as follows: features: clk cycle time (t cc ) min. = 7.5ns (cas latency = 3) / max. = 1000ns row cycle time (t rc ) 65ns clk to output (ts ac ) max. = 5.4ns (cas latency = 3) single power supply of +3.3v (+/- .3v) power 4.323 w (operating) ul rating 94 v - 0 document no. valueram0067-001.b00 03/20/02 figure 1: kvr133x72rc3l/256 168-pin sdram module kvr133x72rc3l/256 256mb 32m x 72-bit pc133 registered cl3 low profile ecc 168-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 1.2" (30.48mm).
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