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Memory Module Specification KVR266X64SC25/256 256MB 32M x 64-Bit DDR266 CL2.5 200-Pin SODIMM DESCRIPTION: This document describes ValueRAM's 32M x 64-bit (256MB) CL2.5 SDRAM (Synchronous DRAM) DDR266 memory module. The components on this module include eight 16M x 16-bit (4M x 16-bit x 4 Bank / 133MHz, 7.5ns, CL2.5) DDR266 SDRAM in TSOP 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) Row Cycle Time (tRC) Refresh Row Cycle Time (tRFC) Row Active Time (tRAS) Single Power Supply of Operating (IDD0) UL Rating 7.5ns (min.) / 12ns (max.) 65ns (min.) 75ns (min.) 45ns (min.) / 120,000ns (max.) +2.5V (+/- .25V) 2.350 W 94 V - 0 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). 2.70 (67.60) 2.50 (63.60) Tolerances : ±.006(.15) unless otherwise specified Y 40 42 200 Units : Inches (Millimeters) (4.00 Min) 0.157 Min 0.157 Min (4.00 Min) 2-f 0.07 (1.80) Z 0.098 2.45 0.150 Max (3.80 Max) 1.896 (47.40) 0.17 (4.20) 0.096 (2.40) 0.07 (1.8) 2 199 0.04 ± 0.0039 (1.00 ± 0.10) 0.16 ± 0.0039 (4.00 ± 0.10) 0.04 ± 0.0039 (1.00 ± 0.1) Detail Z 0.102 Min 0.456 11.40 0.086 2.15 0.79 (20.00) 39 41 (2.55 Min) 0.24 (6.0) 1 1.25 (31.75) Full R 2x 0.16 ± 0.039 (4.00 ± 0.10) 0.018 ± 0.001 (0.45 ± 0.03) 0.01 (0.25) 0.024 TYP (0.60 TYP) Detail Y Figure 1: KVR266X64SC25/256 200-Pin DDR SDRAM Module Document No. VALUERAM0231-001.B00 05/06/02
