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标题: 菜鸟求组:仿真multi-threshold cmos,实现NAND gate [打印本页]

作者: ak11112222ak    时间: 2012-6-13 02:27
标题: 菜鸟求组:仿真multi-threshold cmos,实现NAND gate
source 总是出现以下问题,描述的时候已经说了是接地的了啊,为什么还是会当作断开的呢?
7 D6 k0 a- V* {& pCircuit: *Main mtcoms file# v/ H" a) \8 f2 ?

) a1 G; k  f( j2 @# iWarning: There are nodes with less than 2 connections.2 l5 I+ G, ~# y5 T! @
The table of nodes with less than 2 connections is generated after sourcing...
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% x: X/ ?* l' Z9 k***warning***: the following singular supplies were terminated to 1 meg resistor
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. F* @( |/ K- O0 |0 U1 \. t' asupply       node1            node2
9 Z: W, i$ u) z+ X: yvdd           vdd                  0/ C: R  Z' `+ k9 E$ n# h7 i/ p
v1           a                  0
* ~. W1 h" |  _: z3 pv2           b                  0$ p5 _7 P- a' l9 y! W
v3           sl                  0
  o/ V" r# ^8 K8 p! h( I( Q' r& h* j) \# Q) u
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The following nodes have less than 2 connections:8 V9 R5 e2 i+ y( b" l# N
-------------------------------------------------------------------------------------
5 N2 t$ @5 b% r| sl                 | b                  | a                  | vdd                |
$ ^# i; l; }* J% G-------------------------------------------------------------------------------------

. @- @2 P" D$ ?4 V) V* _一个描述netlist的文件:' j1 L. S9 Y$ V' y) Z+ `( u6 x
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) G% Z$ g" E( [2 A* SPICE export by:  S-Edit 15.13
( w/ t/ }) Z5 J+ e- ?* Export time:      Tue Jun 12 11:15:52 2012# \% c6 U  V7 w6 G
* Design:           mtcoms
3 ^8 Y6 p3 c9 f5 a4 T" w* Cell:             Cell0
! l# s/ s1 D  X* r5 w* Interface:        VResistor
9 ^, J. a0 s9 L+ U* View:             VResistor* \" X: T1 x' }1 o9 @# [" ?
* View type:        connectivity6 r: R+ b6 `3 T( Z& b/ Z* G
* Export as:        top-level cell
( [; u, i  L0 U9 V2 Q* Export mode:      hierarchical. a! G& q, S% I1 ]  b
* Exclude empty cells: no
6 r. ], n/ }+ [1 v* Exclude .model:   yes$ q, h5 k0 X# S# d
* Exclude .end:     no* j! a$ f  [9 o; X/ A
* Exclude simulator commands:     no7 \2 x* W7 E* [6 h3 K5 R( f, W
* Expand paths:     yes
, O$ ?  o& g% f* Wrap lines:       80 characters1 [* {) a6 h! `) c
* Root path:        \\en-file\users\houx\Profile\Desktop\ankun_dong hw2\mtcoms5 f1 z! I2 l; F& y: {6 V
* Exclude global pins:   no
- M! k1 K) @, A: R6 @" O, D* Exclude instance locations: no) v1 \& F( R/ ~) }! F
* Control property name: SPICE5 r! Y1 j, O/ k) l: D7 \8 }! k$ W. q1 ~
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********* Simulation Settings - General Section *********
0 A' J4 |/ ~" H  ]
2 v0 C- g$ d1 D& [1 m( |, f*************** Subcircuits *****************
/ K7 g4 h6 x5 V& t" k.subckt INV A Out Gnd Vdd  , c4 x! l5 G0 S' S
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*-------- Devices With SPICE.ORDER < 0.0  --------
3 J0 }6 k6 X5 [7 P, h* x* Design: LogicGates / Cell: INV / View: Main / Page: * K& H9 b; F5 G0 ~% u; P
* Designed by: Tanner EDA Library Development Team, w4 d" L6 z$ d! x2 D& t4 g
* Organization: Tanner EDA - Tanner Research, Inc.
1 v7 m: F! `9 d! o% d* Info: Inverter% P% P) S" T- P# ?$ {% q& e
* Date: 06/13/07 16:17:116 u5 i" Z! v6 G
* Revision: 3 $ $x=7600 $y=600 $w=3600 $h=1200
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, N5 u" \3 j& d! J& ~9 V; t+ M*-------- Devices With SPICE.ORDER > 0.0  --------
: o2 }0 C4 X0 |MN1 Out A Gnd 0 NMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=4600 $y=2600 : G, J* U0 F6 ^  g( p
+$w=400 $h=600. Y6 Y" A1 `1 t1 g! F" B
MP1 Out A Vdd Vdd PMOS W=2.5u L=250n M=2 AS=1.5625p PS=3.75u AD=2.25p PD=6.8u $
4 j/ V; S7 S, n0 E  a* j+$x=4600 $y=3600 $w=400 $h=600# c+ B& L8 J: I. U$ Z9 O' ^  p
.ends( S! z; X  a5 Y1 J0 Q  u: w
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, g. @/ B2 [6 x' y1 ]*-------- Devices With SPICE.ORDER == 0.0  --------
4 w0 C  G$ d5 }  Q5 U/ O. m***** Top Level *****
$ G, C( h9 @5 U' P3 _XINV_1 SL N_2 Gnd Vdd INV $ $x=350 $y=-2300 $w=900 $h=600: r6 L2 _$ T7 z! ?% W, q

  f6 S: j$ r4 ]7 V$ D. ?7 C( V*-------- Devices With SPICE.ORDER > 0.0  --------0 p  G& t. ^4 l2 o$ ^
CCapacitor_1 VDDV Gnd  1p $ $x=3100 $y=-400 $w=400 $h=600
! H; V) T; R, ICCapacitor_2 GNDV Gnd  1p $ $x=3100 $y=-2500 $w=400 $h=6002 d0 J) R' T  \# g; V  }
MNMOS_1 Out A N_1 N_1 NMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=1100 ) @- v! M3 P  z) l; F
+$y=-800 $w=400 $h=600
: L6 N( k+ r* OMNMOS_2 N_1 B GNDV GNDV NMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=1100 . \5 |; L" @( d  @1 c7 b
+$y=-1500 $w=400 $h=600
% Q  @: a' U+ J4 x# K% zMNMOS_3 GNDV N_2 Gnd Gnd NMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $
, I: _& `* i. V! I8 G+$x=1100 $y=-2300 $w=400 $h=6008 ]" T3 u0 G4 T$ s* i0 r
MPMOS_1 Out A VDDV VDDV PMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=300 + M4 @, X# {' h: Y% `' x
+$y=-200 $w=400 $h=600
( d% q. F1 v/ D, s0 |! LMPMOS_2 Out B VDDV VDDV PMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=1900 8 Y. m9 |1 s% \2 u. o8 H6 y& `5 x
+$y=-200 $w=400 $h=600
6 I% [+ x( X. a5 l) Y# zMPMOS_3 VDDV SL Vdd Vdd PMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=1100
9 Q! c4 K* |8 {/ E/ {: @5 f; H5 w$ E+$y=700 $w=400 $h=600
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********* Simulation Settings - Analysis Section *********
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********* Simulation Settings - Additional SPICE Commands *********9 l5 L: `8 m3 m- \
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.end  z$ c7 q* ]- X9 Y

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mtcoms.PNG (34.78 KB, 下载次数: 2)

mt-cmos

mt-cmos

作者: icy88    时间: 2012-6-19 11:03
source接地的描述应该是 vdd vdd 0 0,你后面少个电压的值




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