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1 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary* W3EG7262S-D3 -jd3 features double-data-rate architecture ddr200 and ddr266 ? jedec design speci? ed bi-directional data strobes (dqs) differential clock inputs (ck & ck#) programmable read latency 2,2.5 (clock) programmable burst length (2,4,8) programmable burst type (sequential & interleave) edge aligned data output, center aligned data input. auto and self refresh serial presence detect dual rank power supply: 2.5v 0.2v jedec184 pin dimm package ? jd3 pcb height: 30.48mm (1.20") note: consult factory for availability of: ? rohs compliant products ? vendor source control options ? industrial temperature option 512mb C 2x32mx72 ddr sdram unbuffered description the w3eg7262s is a 2x32mx72 double data rate sdram memory module based on 256mb ddr sdram components. the module consists of eighteen 32mx8 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 quali? ed or characterized and is subject to change without notice. operating frequencies ddr266 @cl=2 ddr266 @cl=2.5 ddr200 @cl=2 clock speed 133mhz 133mhz 100mhz cl-t rcd -t rp 2-2-2 2.5-3-3 2-2-2
W3EG7262S-D3 -jd3 2 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary pin symbol pin symbol pin symbol pin symbol 1v ref 47 dqs8 93 v ss 139 v ss 2 dq0 48 a0 94 dq4 140 dqm8 3v ss 49 cb2 95 dq5 141 a10 4 dq1 50 v ss 96 v ccq 142 cb6 5 dqs0 51 cb3 97 dqm0 143 v ccq 6 dq2 52 ba1 98 dq6 144 cb7 7v cc 53 dq32 99 dq7 145 v ss 8dq354v ccq 100 v ss 146 dq36 9 nc 55 dq33 101 nc 147 dq37 10 nc 56 dqs4 102 nc 148 v cc 11 v ss 57 dq34 103 nc 149 dqm4 12 dq8 58 v ss 104 v ccq 150 dq38 13 dq9 59 ba0 105 dq12 151 dq39 14 dqs1 60 dq35 106 dq13 152 v ss 15 v ccq 61 dq40 107 dqm1 153 dq44 16 ck1 62 v ccq 108 v cc 154 ras# 17 ck1# 63 we# 109 dq14 155 dq45 18 v ss 64 dq41 110 dq15 156 v ccq 19 dq10 65 cas# 111 cke1 157 cs0# 20 dq11 66 v ss 112 v ccq 158 cs1# 21 cke0 67 dqs5 113 nc 159 dqm5 22 v ccq 68 dq42 114 dq20 160 v ss 23 dq16 69 dq43 115 a12 161 dq46 24 dq17 70 v cc 116 v ss 162 dq47 25 dqs2 71 nc 117 dq21 163 nc 26 v ss 72 dq48 118 a11 164 v ccq 27 a9 73 dq49 119 dqm2 165 dq52 28 dq18 74 v ss 120 v cc 166 dq53 29 a7 75 ck2# 121 dq22 167 nc 30 v ccq 76 ck2 122 a8 168 v cc 31 dq19 77 v ccq 123 dq23 169 dqm6 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 ccq 35 dq25 81 v ss 127 dq29 173 nc 36 dqs3 82 v ccid 128 v ccq 174 dq60 37 a4 83 dq56 129 dqm3 175 dq61 38 v cc 84 dq57 130 a3 176 v ss 39 dq26 85 v cc 131 dq30 177 dqm7 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 ccq 43 a1 89 v ss 135 cb5 181 sa0 44 cb0 90 nc 136 v ccq 182 sa1 45 cb1 91 sda 137 ck0 183 sa2 46 v cc 92 scl 138 ck0# 184 v ccspd pin configuration a0-a12 address input (multiplexed) ba0-ba1 bank select address dq0-dq63 data input/output cb0-cb7 check bits dqs0-dqs8 data strobe input/output ck0, ck1, ck2 clock input ck0#, ck1#, ck2# clock input cke0, cke1 clock enable input cs0#, cs1# chip select input ras# row address strobe cas# column address strobe we# write enable dqm0-dqm8 data-in-mask v cc power supply v ccq power supply for dqs v ss ground v ref power supply for reference v ccspd serial eeprom power supply sda serial data i/o scl serial clock sa0-sa2 address in eeprom v ccid v cc indenti? cation flag nc no connect
W3EG7262S-D3 -jd3 3 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary functional block diagram dqm0 cs0# dqs0 dqm1 dqs1 dqm2 dqs2 dqm3 dqs3 dqs8 dqm8 a0 serial pd a1 a2 sa0 sa1 sa2 scl sda wp a0 - a12 a0-a12 : ddr sdrams ras# ras# : ddr sdrams cas# cas# : ddr sdrams cke0 cke0 : ddr sdrams we# we# : ddr sdrams cke1 cke1 : ddr sdrams ba0 - ba1 ba0-ba1 : ddr sdrams ck0 / cko# clock input sdrams ck1 / ck1# 6 sdrams 6 sdrams 6 sdrams ck2 / ck2# dqm4 dqm5 cs1# dqs4 dqs5 dqm6 dqs6 dqm7 dqs7 v ss v cc / v ccq v ref v ccspd ddr sdrams spd ddr sdrams ddr sdrams dq4 dq5 dq6 dq7 dq0 dq1 dq2 dq3 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq12 dq13 dq14 dq15 dq8 dq9 dq10 dq11 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq23 dq20 dq21 dq22 dq16 dq17 dq18 dq19 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq28 dq29 dq30 dq31 dq24 dq25 dq26 dq27 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 cb4 cb5 cb6 cb7 cb0 cb1 cb2 cb3 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq36 dq37 dq38 dq39 dq32 dq33 dq34 dq35 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq44 dq45 dq46 dq47 dq40 dq41 dq42 dq43 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq52 dq53 dq54 dq48 dq49 dq50 dq51 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq60 dq61 dq62 dq63 dq56 dq57 dq58 dq59 dm cs# dqs i/o 7 i/o 6 i/o 1 i/o 0 i/o 5 i/o 4 i/o 3 i/o 2 dm cs# dqs i/o 0 i/o 1 i/o 6 i/o 7 i/o 2 i/o 3 i/o 4 i/o 5 dq55 notes: 1. dq to i/o wiring is shown as recommended but may be changed. 2. dq/dqs/dm/cke/s relationships must be maintained as shown. note: all resistor values are 22 ohms unless otherwise speci? ed.
W3EG7262S-D3 -jd3 4 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary parameter symbol value units voltage on any pin relative to v ss v in , v out -0.5 to 3.6 v voltage on v cc supply relative to v ss v cc , v ccq -1.0 to 3.6 v storage temperature t stg -55 to +150 c power dissipation p d 18 w short circuit current i os 50 ma note: permanent device damage may occur if absolute maximum ratings are exceeded. functional operation should be restricted to recommended operating condition. exposure to higher than recommended voltage for extended periods of time could affect device reliability absolute maximum ratings dc characteristics 0c t a 70c, v cc = 2.5v 0.2v parameter symbol min max unit supply voltage v cc 2.3 2.7 v supply voltage v ccq 2.3 2.7 v reference voltage v ref 1.15 1.35 v termination voltage v tt 1.15 1.35 v input high voltage v ih v ref + 0.15 v ccq + 0.3 v input low voltage v il -0.3 v ref -0.15 v output high voltage v oh v tt + 0.76 v output low voltage v ol v tt -0.76 v capacitance t a = 25c. f = 1mhz, v cc = 2.5v 0.2v parameter symbol max unit input capacitance (a0-a12) c in1 59 pf input capacitance (ras#,cas#,we#) c in2 59 pf input capacitance (cke0) c in3 32 pf input capacitance (ck0#,ck0) c in4 56 pf input capacitance (cs0#) c in5 32 pf input capacitance (dqm0-dqm8) c in6 13 pf input capacitance (ba0-ba1) c in7 59 pf data input/output capacitance (dq0-dq63)(dqs) c out 13 pf data input/output capacitance (cb0-cb7) c out 13 pf
W3EG7262S-D3 -jd3 5 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary i dd specifications and test conditions recommended operating conditions, 0c t a 70c, v ccq = 2.5v 0.2v, v cc = 2.5v 0.2v includes ddr sdram component only parameter symbol conditions ddr266@cl=2.0 max ddr266@cl=2.5 max ddr200@cl=2 max units operating current i dd0 one device bank; active - precharge; t rc =t rc (min); t ck =t ck (min); dq,dm and dqs inputs changing once per clock cycle; address and control inputs changing once every two cycles. tbd 1845 1845 ma operating current i dd1 one device bank; active-read- precharge burst = 2; t rc =t rc (min); t ck =t ck (min); l out = 0ma; address and control inputs changing once per clock cycle. tbd 2205 2205 ma precharge power- down standby current i dd2p all device banks idle; power-down mode; t ck =t ck (min); cke=(low) tbd 72 72 rna idle standby current i dd2f cs# = high; all device banks idle; t ck =t ck (min); cke = high; address and other control inputs changing once per clock cycle. v in = v ref for dq, dqs and dm. tbd 810 810 ma active power-down standby current i dd3p one device bank active; power-down mode; t ck (min); cke=(low) tbd 450 450 ma active standby current i dd3n cs# = high; cke = high; one device bank; active-precharge; t rc =t ras (max); t ck =t ck (min); dq, dm and dqs inputs changing twice per clock cycle; address and other control inputs changing once per clock cycle. tbd 900 900 ma operating current i dd4r burst = 2; reads; continuous burst; one device bank active; address and control inputs changing once per clock cycle; t ck = t ck (min); l out = 0ma. tbd 2250 2250 ma operating current i dd4w burst = 2; writes; continuous burst; one device bank active; address and control inputs changing once per clock cycle; t ck =t ck (min); dq,dm and dqs inputs changing once per clock cycle. tbd 2115 2115 rna auto refresh current i dd5 t rc = t rc (min) tbd 3015 3015 ma self refresh current i dd6 cke 0.2v tbd 72 72 ma operating current i dd7a four bank interleaving reads (bl=4) with auto precharge with t rc =t rc (min); t ck =t ck (min); address and control inputs change only during active read or write commands. tbd 4050 4050 ma
W3EG7262S-D3 -jd3 6 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary i dd1 : operating current : one bank 1. typical case : v cc =2.5v, t=25c 2. worst case : v cc =2.7v, t=10c 3. only one bank is accessed with t rc (min), burst mode, address and control inputs on nop edge are changing once per clock cycle. i out = 0ma 4. timing patterns : ? ddr200 (100 mhz, cl=2) : t ck= 10ns, cl2, bl=4, t rcd= 2*t ck , t ras= 5*t ck read : a0 n r0 n n p0 n a0 n - repeat the same timing with random address changing; 50% of data changing at every burst ? ddr266 (133mhz, cl=2.5) : t ck= 7.5ns, cl=2.5, bl=4, t rcd= 3*t ck , t rc= 9*t ck , t ras= 5*t ck read : a0 n n r0 n p0 n n n a0 n - repeat the same timing with random address changing; 50% of data changing at every burst ? ddr266 (133mhz, cl=2) : t ck =7.5ns, cl=2, bl=4, t rcd =3*t ck , t rc =9*t ck , t ras =5*t ck read : a0 n n r0 n p0 n n n a0 n - repeat the same timing with random address changing; 50% of data changing at every burst i dd7a : operating current : four banks 1. typical case : v cc =2.5v, t=25c 2. worst case : v cc =2.7v, t=10c 3. four banks are being interleaved with t rc (min), burst mode, address and control inputs on nop edge are not changing. iout=0ma 4. timing patterns : ? ddr200 (100 mhz, cl=2) : t ck =10ns, cl2, bl=4, t rrd =2*t ck , t rcd =3*t ck , read with autoprecharge read : a0 n a1 r0 a2 r1 a3 r2 a0 r3 a1 r0 - repeat the same timing with random address changing; 100% of data changing at every burst ? ddr266 (133mhz, cl=2.5) : t ck =7.5ns, cl=2.5, bl=4, t rrd =3*t ck , t rcd =3*t ck read with autoprecharge read : a0 n a1 r0 a2 r1 a3 r2 n r3 a0 n a1 r0 - repeat the same timing with random address changing; 100% of data changing at every burst ? ddr266 (133mhz, cl=2) : t ck =7.5ns, cl2=2, bl=4, t rrd =2*t ck , t rcd =2*t ck read : a0 n a1 r0 a2 r1 a3 r2 n r3 a0 n a1 r0 - repeat the same timing with random address changing; 100% of data changing at every burst detailed test conditions for ddr sdram i dd1 & i dd7a legend: a = activate, r = read, w = write, p = precharge, n = nop a (0-3) = activate bank 0-3 r (0-3) = read bank 0-3
W3EG7262S-D3 -jd3 7 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary ddr sdram component electrical characteristics and recommended ac operating conditions 0c t a +70c; v cc = +2.5v 0.2v, v ccq = +2.5v 0.2v ac characteristics 262 265, 202 parameter symbol min max min max units notes access window of dqs from ck, ck# t ac -0.75 +0.75 -0.75 +0.75 ns ck high-level width t ch 0.45 0.55 0.45 0.55 t ck 16 ck low-level width t cl 0.45 0.55 0.45 0.55 t ck 16 clock cycle time cl=2.5 t ck (2.5) 7.5 13 7.5 13 ns 22 cl=2 t ck (2) 7.5 13 10 13 ns 22 dq and dm input hold time relative to dqs t dh 0.5 0.5 ns 14,17 dq and dm input setup time relative to dqs t ds 0.5 0.5 ns 14,17 dq and dm input pulse width (for each input) t dipw 1.75 1.75 ns 17 access window of dqs from ck, ck# t dqsck -0.75 +0.75 -0.75 +0.75 ns dqs input high pulse width t dqsh 0.35 0.35 t ck dqs input low pulse width t dqsl 0.35 0.35 t ck dqs-dq skew, dqs to last dq valid, per group, per access t dqsq 0.5 0.5 ns 13,14 write command to ? rst dqs latching transition t dqss 0.75 1.25 0.75 1.25 t ck dqs falling edge to ck rising - setup time t dss 0.2 0.2 t ck dqs falling edge from ck rising - hold time t dsh 0.2 0.2 t ck half clock period t hp t ch , t cl t ch , t cl ns 18 data-out high-impedance window from ck, ck# t hz +0.75 +0.75 ns 8,19 data-out low-impedance window from ck, ck# t lz -0.75 -0.75 ns 8,20 address and control input hold time (fast slew rate) t ihf 0.90 0.90 ns 6 address and control input set-up time (fast slew rate) t isf 0.90 0.90 ns 6 address and control input hold time (slow slew rate) t ihs 1 1 ns 6 address and control input setup time (slow slew rate) t iss 1 1 ns 6 address and control input pulse width (for each input) t ipw 2.2 2.2 ns load mode register command cycle time t mrd 15 15 ns dq-dqs hold, dqs to ? rst dq to go non-valid, per access t qh t hp -t qhs t hp -t qhs ns 13,14 data hold skew factor t qhs 0.75 0.75 ns active to precharge command t ras 45 120,000 45 120,000 ns 15 active to read with auto precharge command t rap 20 20 ns active to active/auto refresh command period t rc 65 65 ns auto refresh command period t rfc 75 75 ns 21
W3EG7262S-D3 -jd3 8 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary ddr sdram component electrical characteristics and recommended ac operating conditions (continued) 0c t a +70c; v cc = +2.5v 0.2v, v ccq = +2.5v 0.2v ac characteristics 262 265, 202 parameter symbol min max min max units notes active to read or write delay t rcd 20 20 ns precharge command period t rp 20 20 ns dqs read preamble t rpre 0.9 1.1 0.9 1.1 t ck 19 dqs read postamble t rpst 0.4 0.6 0.4 0.6 t ck active bank a to active bank b command t rrd 15 15 ns dqs write preamble t wpre 0.25 0.25 t ck dqs write preamble setup time t wpres 0 0 ns 10,11 dqs write postamble t wpst 0.4 0.6 0.4 0.6 t ck 9 write recovery time t wr 15 15 ns internal write to read command delay t wtr 11t ck data valid output window na t qh -t dqsq t qh -t dqsq ns 13 refresh to refresh command interval t refc 70.3 70.3 s 12 average periodic refresh interval t refi 7.8 7.8 s 12 terminating voltage delay to v cc t vtd 00ns exit self refresh to non-read command t xsnr 75 75 ns exit self refresh to read command t xsrd 200 200 t ck
W3EG7262S-D3 -jd3 9 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary 12. the refresh period is 64ms. this equates to an average refresh rate of 15.625s. however, an auto refresh command must be asserted at least once every 140.6s; burst refreshing or posting by the dram controller greater than eight refresh cycles is not allowed. 13. the valid data window is derived by achieving other speci? cations - t hp (t ck/2 ), t dqsq , and t qh (t qh = t hp - t qhs ). the data valid window derates directly proportional with the clock duty cycle and a practical data valid window can be derived. the clock is allowed a maximum duty cycled variation of 45/55. functionality is uncertain when operating beyond a 45/55 ratio. the data valid window derating curves are provided below for duty cycles ranging between 50/50 and 45/55. 14. referenced to each output group: x8 = dqs with dq0-dq7. 15. r eads and writes with auto precharge are not allowed to be issued until t ras (min) can be satis? ed prior to the internal precharge command being issued. 16. jedec speci? es ck and ck# input slew rate must be > 1v/ns (2v/ns differentially). 17. dq and dm input slew rates must not deviate from dqs by more than 10%. if the dq/dm/dqs slew rate is less than 0.5v/ns, timing must be derated: 50ps must be added to t ds and t dh for each 100mv/ns reduction in slew rate. if slew rates exceed 4v/ns, functionality is uncertain. 18. t hp min is the lesser of t cl min and t ch min actually applied to the device ck and ck# inputs, collectively during bank active. 19. this maximum value is derived from the referenced test load. in practice, the values obtained in a typical terminated design may re? ect up to 310ps less for t hz (max) and last dvw. t hz (max) will prevail over the t dqsck (max) + t rpst (max) condition. t lz (min) will prevail over t dqsck (min) + pre (max) condition. 20. for slew rates greater than 1v/ns the (lz) transition will start about 310ps earlier. 21. cke must be active (high) during the entire time a refresh command is executed. that is, from the time the auto refresh command is registered, cke must be active at each rising clock edge, until t ref later. 22. w henever the operating frequency is altered, not including jitter, the dll is required to be reset. this is followed by 200 clock cycles (before read commands). notes 1. all voltages referenced to v ss 2. tests for ac timing, i dd , and electrical ac and dc characteristics may be conducted at normal reference / supply voltage levels, but the related speci? cations and device operations are guaranteed for the full voltage range speci? ed. 3. outputs are measured with equivalent load: 4. ac timing and i dd tests may use a v il -to-v ih swing of up to 1.5v in the test environment, but input timing is still referenced to v ref (or to the crossing point for ck/ck#), and parameter speci? cations are guaranteed for the speci? ed ac input levels under normal use conditions. the minimum slew rate for the input signals used to test the device is 1v/ns in the range between v il (ac) and v ih (ac). 5. the ac and dc input level speci? cations are de? ned in the sstl_ 2 standard (i.e., the receiver will effectively switch as a result of the signal crossing the ac input level, and will remain in that state as long as the signal does not ring back above [below] the dc input low [high] level). 6. command/address input slew rate = 0.5v/ns. for 262 with slew rates 1v/ns and faster, t is and t ih are reduced to 900ps. if the slew rate is less than 0.5v/ns, timing must be derated: t is has an additional 50ps per each 100mv/ns reduction in slew rate from the 500mv/ns. t ih has 0ps added, that is, it remains constant. if the slew rate exceeds 4.5v/ns, functionality is uncertain. 7. inputs are not recognized as valid until v ref stabilizes. exception: during the period before v ref stabilizes, cke 0.3 x v ccq is recognized as low. 8. t hz and t lz transitions occur in the same access time windows as valid data transitions. these parameters are not referenced to a speci? c voltage level, but specify when the device output is no longer driving (hz) and begins driving (lz). 9. the maximum limit for this parameter is not a device limit. the device will operate with a greater value for this parameter, but system performance (bus turnaround) will degrade accordingly. 10. this is not a device limit. the device will operate with a negative value, but system performance could be degraded due to bus turnaround. 11. it is recommended that dqs be valid (high or low) on or before the write command. the case shown (dqs going from high-z to logic low) applies when no writes were previously in progress on the bus. if a previous write was in progress, dqs could be high during this time, depending on t dqss . output o u t p u t (v ( v out o u t ) reference r e f e r e n c e point p o i n t 50 5 0 ? v tt t t 30pf 3 0 p f
W3EG7262S-D3 -jd3 10 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary 133.48 (5.255" max.) 3.99 (0.157 (2x)) 17.78 (0.700) 10.01 (0.394) 6.35 (0.250) 64.77 (2.550) 1.78 (0.070) 49.53 (1.950) 3.00 (0.118) (4x) 30.48 (1.20) max 2.31 (0.091) (2x) 1.27 (0.050 typ.) 6.35 (0.250) 128.95 (5.077") 131.34 (5.171") 3.81 (0.150) max 3.99 (0.157) (min) 1.27 0.10 (0.050 0.004) package dimensions for jd3 * all dimensions are in millimeters and (inches) ordering information for jd3 part number speed cas latency t rcd t rp height* w3eg7262s262jd3 133mhz/266mb/s 2 2 2 30.48 (1.20") w3eg7262s265jd3 133mhz/266mb/s 2.5 3 3 30.48 (1.20") w3eg7262s202jd3 100mhz/200mb/s 2 2 2 30.48 (1.20") notes: ? consult factory for availability of rohs compliant products. (g = rohs compliant) ? vendor speci? c part numbers are used to provide memory components source control. the place holder for this is shown as lo wer case x in the part numbers above and is to be replaced with the respective vendors code. consult factory for quali? ed sourcing options. (m = micron, s = samsung & consul t factory for others) ? consult factory for availability of industrial temperature (-40c to 85c) option
W3EG7262S-D3 -jd3 11 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary 133.48 (5.255" max.) 3.99 (0.157 (2x)) 17.78 (0.700) 10.01 (0.394) 6.35 (0.250) 64.77 (2.550) 1.78 (0.070) 49.53 (1.950) 3.00 (0.118) (4x) 30.48 (1.20) max 2.31 (0.091) (2x) 1.27 (0.050 typ.) 6.35 (0.250) 128.95 (5.077") 131.34 (5.171") 3.81 (0.150) max 3.99 (0.157) (min) 1.27 0.10 (0.050 0.004) package dimensions for d3 * all dimensions are in millimeters and (inches) ordering information for d3 part number speed cas latency t rcd t rp height* w3eg7262s262d3 133mhz/266mb/s 2 2 2 30.48 (1.20") w3eg7262s265d3 133mhz/266mb/s 2.5 3 3 30.48 (1.20") w3eg7262s202d3 100mhz/200mb/s 2 2 2 30.48 (1.20") notes: ? consult factory for availability of rohs compliant products. (g = rohs compliant) ? vendor speci? c part numbers are used to provide memory components source control. the place holder for this is shown as lo wer case x in the part numbers above and is to be replaced with the respective vendors code. consult factory for quali? ed sourcing options. (m = micron, s = samsung & consul t factory for others) ? consult factory for availability of industrial temperature (-40c to 85c) option
W3EG7262S-D3 -jd3 12 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs may 2005 rev. 3 preliminary document title 512mb - 64mx72 ddr sdram unbuffered revision history rev # history release date status rev 0 created datasheet 5-22-02 advanced rev 1 1.1 added document title page 1.2 removed "ed" for part marking 4-27-04 preliminary rev 2 2.1 corrected pin con? guration 2.2 updated block diagram 2.3 added lead-free and rohs notes 2.4 added source control notes 2.5 added industrial temp notes 1-05 preliminary rev 3 3.1 added jedec standard pcb 3.2 d3 pcb option is "not recommended for new designs 5-05 preliminary

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