W3DG72256V-AD2

White Electronic Designs 2GB – 2x128Mx72 SDRAM, REGISTERED FEATURES Burst Mode Operation Auto and Self Refresh capability LVTTL compatible inputs and outputs Serial Presence Detect with EEPROM Fully synchronous: All signals are registered on the positive edge of the system clock Programmable Burst Lengths: 1, 2, 4, 8 or Full Page 3.3V ± 0.3V Power Supply Dual Rank 168 Pin DIMM JEDEC WV3DG72256V-AD2 PRELIMINARY DESCRIPTION The WV3DG72256V is a 2x128Mx72 synchronous DRAM module which consists of eighteen 256Mx4 stack SDRAM components (stacked from 128Mx4) in TSOP II package, two 18 bit Drive ICs for input control signal and one 2Kb EEPROM in an 8 pin TSSOP package for Serial Presence Detect which are mounted on a 168 pin DIMM multilayer FR4 Substrate. * This product is under development, is not qualified or characterized and is subject to change without notice. NOTE: Consult factory for availability of: RoHS compliant products Vendor source control options Industrial temperature option www.DataSheet4U.com PCB - AD2: 28.58mm (1.125”) TYP PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE) PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 FRONT VSS DQ0 DQ1 DQ2 DQ3 VCC DQ4 DQ5 DQ6 DQ7 DQ8 VSS DQ9 DQ10 DQ11 DQ12 DQ13 VCC DQ14 DQ15 CB0 CB1 VSS NC NC VCC WE# DQM0 PIN 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 BACK DQM1 CS0# NC VSS A0 A2 A4 A6 A8 A10/AP BA1 VCC VCC CLK0 VSS NC CS2# DQM2 DQM3 NC VCC NC NC CB2 CB3 VS...