WV3DG72256V-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 PCB - AD2: 28.58mm (1.125”) TYP 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 PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE) PIN FRONT PIN BACK 29 DQM1 1 VSS 2 DQ0 30 CS0# 3 DQ1 31 NC 4 DQ2 32 VSS 5 DQ3 33 A0 34 A2 6 VCC 7 DQ4 35 A4 8 DQ5 36 A6 www.DataSheet4U.com 9 DQ6 37 A8 10 DQ7 38 A10/AP 11 DQ8 39 BA1 40 VCC 12 VSS 13 DQ9 41 VCC 14 DQ10 42 CLK0 15 DQ11 43 VSS 16 DQ12 44 NC 17 DQ13 45 CS2# 18 VCC 46 DQM2 19 DQ14 47 DQM3 20 DQ15 48 NC 21 CB0 49 VCC 22 CB1 50 NC 23 VSS 51 NC 24 NC 52 CB2 25 NC 53 CB3 54 VSS 26 VCC 27 WE# 55 DQ16 28 DQ...