器件名称: W3DG644V7D2
功能描述: 32MB - 4M x 64 SDRAM UNBUFFERED
文件大小: 117.97KB 共6页
简 介:White Electronic Designs
32MB - 4M x 64 SDRAM UNBUFFERED
FEATURES
PC100 and PC133 compatible 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 168 pin DIMM JEDEC
W3DG644V-D2
PRELIMINARY*
DESCRIPTION
The W3DG644V is a 4M x 64 synchronous DRAM module which consists of four 4M x 16 SDRAM components in TSOP II package and one 2K 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 qualied or characterized and is subject to change without notice.
PIN CONFIGURATIONS (FRONT SIDE/BACK SIDE)
PIN FRONT 1 VSS 2 DQ0 3 DQ1 4 DQ2 5 DQ3 6 VCC 7 DQ4 8 DQ5 9 DQ6 10 DQ7 11 DQ8 12 VSS 13 DQ9 14 DQ10 15 DQ11 16 DQ12 17 DQ13 18 VCC 19 DQ14 20 DQ15 21 NC 22 NC 23 VSS 24 NC 25 NC 26 VCC 27 WE# 28 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 FRONT DQM1 CS0# DNU VSS A0 A2 A4 A6 A8 A10/AP BA1 VCC VCC CLK0 VSS DNU CS2# DQM2 DQM3 DNU VCC NC NC NC NC VSS DQ16 DQ17 PIN 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 FRONT DQ18 DQ19 VCC DQ20 NC NC NC VSS DQ21 DQ22 DQ23 VSS DQ24 DQ25 DQ26 DQ27 VCC DQ28 DQ29 DQ30 DQ31 VSS CLK2 NC *WP **SDA **SCL VCC PIN 85 86 87 88 89 90 91 92 9……
