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标题:
菜鸟求组:仿真multi-threshold cmos,实现NAND gate
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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？
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Circuit: *Main mtcoms file
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Warning: There are nodes with less than 2 connections.
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The table of nodes with less than 2 connections is generated after sourcing...
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***warning***: the following singular supplies were terminated to 1 meg resistor
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supply node1 node2
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vdd vdd 0
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v1 a 0
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v2 b 0
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v3 sl 0
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The following nodes have less than 2 connections:
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-------------------------------------------------------------------------------------
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| sl | b | a | vdd |
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-------------------------------------------------------------------------------------
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一个描述netlist的文件：
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* SPICE export by: S-Edit 15.13
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* Export time: Tue Jun 12 11:15:52 2012
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* Design: mtcoms
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* Cell: Cell0
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* Interface: VResistor
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* View: VResistor
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* View type: connectivity
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* Export as: top-level cell
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* Export mode: hierarchical
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* Exclude empty cells: no
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* Exclude .model: yes
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* Exclude .end: no
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* Exclude simulator commands: no
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* Expand paths: yes
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* Wrap lines: 80 characters
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* Root path: \\en-file\users\houx\Profile\Desktop\ankun_dong hw2\mtcoms
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* Exclude global pins: no
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* Exclude instance locations: no
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* Control property name: SPICE
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********* Simulation Settings - General Section *********
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*************** Subcircuits *****************
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.subckt INV A Out Gnd Vdd
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*-------- Devices With SPICE.ORDER < 0.0 --------
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* Design: LogicGates / Cell: INV / View: Main / Page:
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* Designed by: Tanner EDA Library Development Team
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* Organization: Tanner EDA - Tanner Research, Inc.
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* Info: Inverter
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* Date: 06/13/07 16:17:11
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* Revision: 3 $ $x=7600 $y=600 $w=3600 $h=1200
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*-------- Devices With SPICE.ORDER > 0.0 --------
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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 $y=2600
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+$w=400 $h=600
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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 $
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+$x=4600 $y=3600 $w=400 $h=600
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.ends
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*-------- Devices With SPICE.ORDER == 0.0 --------
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***** Top Level *****
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XINV_1 SL N_2 Gnd Vdd INV $ $x=350 $y=-2300 $w=900 $h=600
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*-------- Devices With SPICE.ORDER > 0.0 --------
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CCapacitor_1 VDDV Gnd 1p $ $x=3100 $y=-400 $w=400 $h=600
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CCapacitor_2 GNDV Gnd 1p $ $x=3100 $y=-2500 $w=400 $h=600
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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 $ $x=1100
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+$y=-800 $w=400 $h=600
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MNMOS_2 N_1 B GNDV GNDV NMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=1100
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+$y=-1500 $w=400 $h=600
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MNMOS_3 GNDV N_2 Gnd Gnd NMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $
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+$x=1100 $y=-2300 $w=400 $h=600
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MPMOS_1 Out A VDDV VDDV PMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=300
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+$y=-200 $w=400 $h=600
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MPMOS_2 Out B VDDV VDDV PMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=1900
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+$y=-200 $w=400 $h=600
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MPMOS_3 VDDV SL Vdd Vdd PMOS W=2.5u L=250n AS=2.25p PS=6.8u AD=2.25p PD=6.8u $ $x=1100
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+$y=700 $w=400 $h=600
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********* Simulation Settings - Analysis Section *********
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.op
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********* Simulation Settings - Additional SPICE Commands *********
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.end
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mtcoms.PNG
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2012-6-13 02:23 上传
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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