1 white electronic designs wed3eg72512sxx-jd3 -ajd3 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com february, 2004 rev. 0 white electronic designs corp. reserves the right to change products or specifcations without notice. features n double data rate architecture n ddr200 and ddr266 ? jedec design specifcations n bi-directional data strobes (dqs) n differential clock inputs (ck & ck#) n programmable read latency 2, 2.5 (clock) n programmable burst length (2, 4, 8) n programmable burst type (sequential & interleave) n edge aligned data output, center aligned data input n auto and self refresh n serial presence detect n jedec standard 184 pin dimm package n power supply: v dd : 2.5v 0.2v n package option jd3 30.46 (1.20") and ajd3 28.68 (1.13") description the wed3eg72512sxx-jd3 is a 2x256mx72 double data rate sdram memory module based on 1 gb ddr sdram components. the module consists of thirtysix 1gb stacked ddr sdrams in 66 pin tsop packages mounted on a 184 pin fr4 substrate. synchronous design allows precise cycle control with the use of system clock. data i/o transactions are possible on both edges and burst lengths allow the same device to be useful for a variety of high bandwidth, high performance memory system applications. this product is under development, is not qualifed or characterized and is subject to change or cancellation without notice. 262jd3 265jd3 202jd3 ddr266 @cl=2 ddr266 @cl=2.5 ddr200 @cl=2 speed @ cs=2 133mhz 133mhz 100mhz speed @ cs=2.5 133mhz 133mhz CCCCC cl-t rcd -t rp 2-3-3 2.5-3-3 2-2-2 operating frequencies advanced* 4gb-2x256mx72 ddr sdram registered ecc
2 white electronic designs wed3eg72512sxx-jd3 -ajd3 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com february, 2004 rev. 0 white electronic designs corp. reserves the right to change products or specifcations without notice. pin # symbol pin# symbol pin# symbol pin# symbol 1 v ref 47 dqs8 93 v ss 139 v ss 2 dq0 48 a0 94 dq4 140 dqs17 3 v ss 48 a0 95 dq5 141 a10 4 dq1 50 v ss 96 v ddq 142 cb6 5 dqs0 51 cb3 97 dqs9 143 v ddq 6 dq2 52 ba1 98 dq6 144 cb7 7 v dd 53 dq32 99 dq7 145 v ss 8 dq3 54 v ddq 100 v ss 146 dq36 9 nc 55 dq33 101 nc 147 dq37 10 reset# 56 dqs4 102 nc 148 v dd 11 v ss 57 dq34 103 nc 149 dqs13 12 dq8 58 v ss 104 v ddq 150 dq38 13 dq9 59 ba0 105 dq12 151 dq39 14 dqs1 60 dq35 106 dq13 152 v ss 15 v ddq 61 dq40 107 dqs10 153 dq44 16 nc 62 v ddq 108 v dd 154 ras# 17 nc 63 we# 109 dq14 155 dq45 18 v ss 64 dq41 110 dq15 156 v ddq 19 dq10 65 cas# 111 nc 157 cs0# 20 dq11 66 v ss 112 v ddq 158 nc 21 cke0 67 dqs5 113 nc 159 dqs14 22 v ddq 68 dq42 114 dq20 160 v ss 23 dq16 69 dq43 115 a12 161 dq46 24 dq17 70 v dd 116 v ss 162 dq47 25 dqs2 71 nc 117 dq21 163 nc 26 v ss 72 dq48 118 a11 164 v ddq 27 a9 73 dq49 119 dqs11 165 dq52 28 dq18 74 v ss 120 v dd 166 dq53 29 a7 75 nc 121 dq22 167 a13 30 v ddq 76 nc 122 a8 168 v dd 31 dq19 77 v ddq 123 dq23 169 dqs15 32 a5 78 dqs6 124 v ss 170 dq54 33 dq24 79 dq50 125 a6 171 dq55 34 v ss 80 dq51 126 dq28 172 v ddq 35 dq25 81 v ss 127 dq29 173 nc 36 dqs3 82 v ddid 128 v ddq 174 dq60 37 a4 83 dq56 129 dqs12 175 dq61 38 v dd 84 dq57 130 a3 176 v ss 39 dq26 85 v dd 131 dq30 177 dqs16 40 dq27 86 dqs7 132 v ss 178 dq62 41 a2 87 dq58 133 dq31 179 dq63 42 v ss 88 dq59 134 cb4 180 v ddq 43 a1 89 v ss 135 cb5 181 sa0 44 cb0 90 nc 136 v ddq 182 sa1 45 cb1 91 sda 137 ck0 183 sa2 46 v dd 92 scl 138 ck0# 184 v ddspd pin configuration a0 ~ a13 address input (multiplexed) ba0 ~ ba1 bank select address dq0 ~ dq63 data input/output cb0 ~ cb7 check bits dqs0 ~ dqs17 data strobe input/output ck0 clock input ck0# clock input cke0, cke1 clock enable input cs0#, cs1# chip select input ras# row address strobe cas# column address strobe we# write enable v dd power supply (2.5v) v ddq power supply for dqs (2.5v) v ss ground v ref power supply for reference v ddspd serial eeprom power/supply (2.3v to 3.6v) sda serial data i/o scl serial clock sa0 ~ 2 address in eeprom v ddid v dd identifcation flag nc no connection reset reset enable pin names
5 4 white electronic designs wed3eg72512sxx-jd3 -ajd3 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com february, 2004 rev. 0 white electronic designs corp. reserves the right to change products or specifcations without notice. ?????? ????????????? ???? ??????????? ????? ?????? ???? ?????? ???? ?????? ????? ??????? ???? ?????? ????? ??????? ???? ??? ?? ? ???? ???? ?????????? ???? ????? ?????? ???????? ????? ?????????? ???? ?????????? ???? ?????? ???? ???? ?????? ??? ?? ???? ?????? ?????? ???????? ?????? ???????? part number density speed cas latency organization height* wed3eg72512s262ajd3 4gb 133mhz/266mbps 2 2 x 256m x 72 28.68 (1.13") wed3eg72512s265ajd3 4gb 133mhz/266mbps 2.5 2 x 256m x 72 28.68 (1.13") wed3eg72512s202ajd3 4gb 100mhz/200mbps 2 2 x 256m x 72 28.68 (1.13") ordering information for ajd3 package dimensions for ajd3 all dimensions are in millimeters and (inches) max min or typical where noted
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