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各位好,我在仿真6T CELL讀操作時遇到了一點問題,特向大家求助。* v) v0 H% Q7 V4 F# m. }) R
問題如下:我的所有的高電平的電壓都是2.5V,爲什麽V(2)節點的電壓會高於電源電壓?
) r% l, f9 U* T- |0 b+ [9 p4 y說明:讀操作時節點2有初始值高電平,節點1低電平,兩個字線都是高電平。, H0 U9 _0 R" A' d5 E- [
Hspice網表如下:: q2 O' Q2 W: _( F+ g7 H8 Y
m1 2 1 vdd vdd pch w=0.3u l=l
7 K# D& K" w: ~+ ~7 p" V; Cm2 2 1 gnd gnd nch w=0.85u l=l. l) `' _/ \7 Q, w
m3 1 2 gnd gnd nch w=0.85u l=l
! _5 k/ t3 B. ?5 w) j- T! o' @; J+ Fm4 1 2 vdd vdd pch w=0.3u l=l
9 i. g7 f( h: h+ Um5 b w 2 gnd nch w=0.58u l=l' l2 v3 X7 R0 k' C, n4 B, x4 \
m6 bl w 1 gnd nch w=0.58u l=l
3 P! w$ u0 F% p% o6 n& n' ^c1 b gnd 0.1p ]+ m" _. J6 s# Z. e6 y
c2 bl gnd 0.1p+ e F3 f8 ^" c% N* O8 r5 o
vw w gnd dc 0 ac 0 0 pwl(0 0 1n 0 1.00001n t 10n t)4 K) S* c+ \$ U5 {5 y
.param t=2.5v l=0.24um
4 p) O: A t+ Z) G# |.ic v(2)=2.5 v(1)=0 v(b)=2.5 v(bl)=2.5, J, e Q# C$ l$ R0 J! s
.temp 257 p! D; r1 w! F7 F& O# j$ L
.tran 0.01n 4n
% L: K7 d4 o+ P( a7 u+ W.op2 W0 n7 w: n6 A6 ?: @* N& o8 @
.print i(*)' H/ U7 j. @- U9 m# U7 v
.end, R+ R5 q- m) p( x! o* m9 D: |
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By xczhang at 2009-03-30
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/ a/ R, k# e" [% W/ dBy xczhang at 2009-03-30 |
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