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各位好, H% Y4 r$ w* D$ `# D
最近在參考Foundry的LPE command file對寄生參數的寫法時,對ATTRIBUTE CAP的語法有些疑惑
" N x) n" n: c( |0 X$ F依照Dracula Reference內ATTRIBUTE CAP章節內Case 4的定義如下
/ [" D* t0 R4 Q6 X r1 h2 q% _Case 4:8 n* ^3 r( ?5 S
PARASITIC CAP {subType} device_layer terminal_layer1 terminal_layer2# S* p0 k' a5 _, O" r5 _
ATTRIBUTE CAP {subType} areaCoeff perimCoeff depthRange sidewallCoeff3 V: `8 ]' x4 Y" F5 U
且參考此章節Example 4 中的例子# T% ]5 g9 H3 b3 H0 v4 R ]* ?$ O I
*OPERATION
& w" n3 V& N2 s" J/ xPARASITIC CAP[F] M12 MET1 MET2, ]! n( K, [; ~6 X
ATTRIBUTE CAP[F] 0.5 1.2 0.2 0.019 ; PIECE-WISE COEFFICIENT/ h" h5 Y1 P7 U8 t# v* m
ATTRIBUTE CAP[F] 0.5 1.2 0.6 0.032 ; PIECE-WISE COEFFICIENT
3 I+ C1 p. G9 z2 J& uLEXTRACT NEWE M12 BY CAP[F] PFILE & ; FLEXIBLE EQUATION
2 a1 p$ x8 T5 nEQUATION C= 0.5*AREA +1.2*(PERI-TPR) + CLL
0 S7 u9 }# {+ [0 g: a...
: y) p/ v( d9 N6 q E6 c*END
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/ s& D( K8 h4 y5 w9 p其中(若以下解釋有錯請糾正我); o( p- t7 t+ H" P
areaCoeff為M12的單位面積寄生電容值(Ca)# z; L6 u4 g0 A1 [$ O' ]
perimCoeff為M12的邊緣電容值
+ @( R& Z3 m l# ]' EdepthRange為M12距離MET1的距離) f9 J& K; V6 R( q3 _
sidewallCoeff為不同距離區間下M12與MET1的Fringe電容值
6 n' S/ g4 p/ A1 \" C1 {6 J4 q3 P6 m3 ]8 Y1 u3 W" |: b3 k
以下為我節取一段Foundry的LPE command
' w7 C. A3 s, G PARASITIC CAP[A3] M12 ME1 ME2
/ J$ M0 V X1 c' V ATTRIBUTE CAP[A3] 3.871E-05 4.2267E-05 0.42 1.6709E-05$ @; x- w/ P$ V; C( Y
ATTRIBUTE CAP[A3] 3.871E-05 4.2267E-05 0.966664 4.20651E-05
, c( {( V( m5 o8 C" d4 Y: T ATTRIBUTE CAP[A3] 3.871E-05 4.2267E-05 1.51333 5.99823E-051 A( r+ [: f7 ?0 f3 X1 D# |/ b9 a
ATTRIBUTE CAP[A3] 3.871E-05 4.2267E-05 2.06 7.1379E-05$ p4 Q( \9 E& R3 k& n) b1 X
ATTRIBUTE CAP[A3] 3.871E-05 4.2267E-05 2.60666 7.83301E-05+ Y8 ?8 i- F' x5 Z S% A) T
ATTRIBUTE CAP[A3] 3.871E-05 4.2267E-05 3.15334 8.2139E-05
$ S+ G. N0 B) f4 r' h3 l Y5 j為何ME1距離M12越遠Fringe電容值越大?, G+ f! ?8 R& y( D& e0 G2 P/ h
電容不是兩端越遠電容值越小嗎?3 U) J/ ^0 ?9 E8 S
還是我根本就理解錯誤?
" G7 l) S- z$ j8 M懇請各位不吝指教,感謝!!感謝!! |
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