MyAnalog & MyChip
Introduction
2001-09-29
Introduction
? Who are they?
? How to use them?
? A little example
? FAQ & Spice…
Who are they?
MY
CAD
MyLogic ?
MyAnalog ?
MyChip ?
MyVHDL ?
MyAnalog
SchEd MySpice
Logic2SPICE
MyChip
LayEd
ERC
Spice file
SchEd MySpice
LayEd
Logic2Spice
DRC ERC
MyLVS
MyAnalog
MyChip
How to use them?
? MyAnalog
– SchEd
– MySpice
? MyChip
– LayEd
Library
Cell
View
Symbol
Input
Output
Line
How to use them?
? MyAnalog
– SchEd
– MySpice
? MyChip
– LayEd
Source
file
Analysis
methods
How to use them?
? MyAnalog
– SchEd
– MySpice
? MyChip
– LayEd
DRC check
ERC check
LVS Compare
A little example
PMOS,
L=3u W=9u
NMOS,
L=3u W=6u
CAP,
C=10pf
C:\MyCAD\Library\MyAnalog\Analog.lib
5
50n
1000n
500n
50n
50n
Import…
Postprocessor
Postprocessor
drc.rul
erc.rul
scmoc.tec
Poly
P+
Active
N well
Contact
c:\MyCAD\demo\MyChip\Example\document\scmos.doc
FAQ
? Powers,
VCC,VDD,and VDC
? Environment,
*.mdc *.prj
? Myspice Error,
,time step too small !!!,
Options->Numerical Specific Options,
1.0E-13 => 1.0E-12
How to write reports?
? 实验的题目和要求
? 实验步骤，设计的子模块，电路图和表达式
? 实验结果：产生的 *.cir文件，波形图,
并作适当的分析
? 实验过程中遇到的问题以及解决方法
? 对 VLSI课程以及实验的意见和建议
? 总的原则,
内容完整，要有自己分析的东西,
不要简单地罗列程序和图表。
Spice expression
? 注释
－ *… this is a comment…
? 元件描述
– 电阻 R1 1 2 10k
– 电容 CL 2 4 10pf
– 二极管 D1 3 6 NDIODE
.model NDIODE D
? 电源描述
– Vdc 1 0 DC 12
– Vac 2 0 AC 1
– Vp 3 0 pulse –1 1 2n 2n 2n 50n 100n
? 子电路
–,SUBCKT Test IN0 IN1 IN2 OUT0
–,ENDS Test
.model nmos nmos level=2
.model npn npn bf=80 …
– MOS管 M1 4 1 3 3 nmos L=20u W=180u
–三极管 Q1 4 8 12 12 npn