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以下為我的計數器程式 用HSPICE模擬的 但是模擬出來後 發現5BIT的計數器的波形的上升及下降時間有點慢* z# E9 \4 @) v+ m
因此影響到我後面電路的功能 所以想請問各位大大 能否增快計數器波形的上升及下降速度0 m3 A( R( ]( Z7 X' H7 T
**and2
+ m1 l$ e# m* f" r; l% D4 x& a.subckt and2 4 5 3% L2 \% u+ ^* x& o4 e
m1 1 5 0 0 nch5 w=1.5u l=1u
2 R9 O8 l A" l# g, ?# Q4 e# n5 t; A) rm2 2 4 1 0 nch5 w=1.5u l=1u
: N% o2 {) p3 a) H) i7 Qm3 3 2 0 0 nch5 w=1.5u l=1u
0 X/ O5 _3 O0 F; v6 S0 [m4 2 4 vdd vdd pch5 w=3u l=1u) a: z+ O" ^4 m# G1 C
m5 2 5 vdd vdd pch5 w=3u l=1u
# r3 E# ]5 E% y9 l' J& d* e4 `m6 3 2 vdd vdd pch5 w=3u l=1u
4 ?/ ?3 L# @: H( }.ends7 l4 c% S8 b4 x) B
5 Y3 J. O5 e' b, |
**nand28 @ r2 e4 k+ y+ r' l5 k( }. v
.subckt nand2 4 5 2
/ [8 m/ D+ ~4 `4 n, o. _. zm1 1 5 0 0 nch5 w=1.5u l=1u+ x6 |+ f1 l# \
m2 2 4 1 0 nch5 w=1.5u l=1u
{) m+ t7 o; tm4 2 4 vdd vdd pch5 w=3u l=1u
/ ?" Z! T4 [" t/ ?2 j/ O. [m5 2 5 vdd vdd pch5 w=3u l=1u4 _8 f$ T' o! ?3 C$ G n/ K' _2 j
.ends n c4 R% A% ?' W' W
% I) p r& b( O% z
**nand3
; y, r: U6 w: A s0 T6 }.subckt nand3 5 6 7 3
3 _( c) w k! e& @* x; a6 l3 m$ Om1 1 7 0 0 nch5 w=1.5u l=1u7 S4 v/ ?0 U1 E1 l1 {
m2 2 6 1 0 nch5 w=1.5u l=1u
3 z1 {- I: z4 ~7 k- F! l% u' om3 3 5 2 0 nch5 w=1.5u l=1u+ g. d. x: s: f$ q
m5 3 5 vdd vdd pch5 w=3u l=1u: t% F9 L* h e1 k
m6 3 6 vdd vdd pch5 w=3u l=1u
* X; F& }5 w" _: k1 z0 [# am7 3 7 vdd vdd pch5 w=3u l=1u ' Y+ F& D1 l" q( p; h0 d
.ends
9 e, l& ]. i% Z3 ^- s! o' k
' Q. {4 \" @# Z& n! I0 _7 }3 b# E.subckt td-ff d clk clr q q-
# H, P4 P: G5 Y4 A/ Z$ }4 Rx1 b4 b2 b1 nand2
. |6 b/ E0 Z; J2 P$ R9 u: h8 \% g+ ?x2 b1 clr clk b2 nand3
m) x& k0 M: {' [8 l2 Mx3 b2 clk b4 b3 nand3! w7 e9 m/ Z+ d: K* m
x4 b3 clr d b4 nand3 W: e# u) Z6 s5 h
x5 b2 q- q nand27 L$ h8 O; G! v# ^# t; K
x6 q clr b3 q- nand3
' O8 D0 @1 t/ ~5 j; ]5 g/ H.ends2 Q) Y( Y( T7 j" C& _
' D; b+ Y5 s) S6 _# O
% D- S8 p7 h B2 L6 k**counter-1bit* h& _& \7 c6 U4 I7 C
.subckt counter-1bit ck clr q& X: h. b) z! d8 G6 N2 |
x7 d clk clr q q- td-ff
$ x: u: F0 g2 E6 l: mx8 q- t d and2+ ], j1 W- S! u
x9 ck clk not
1 L; C, q/ R2 `6 n f% k+ J.ic v(d)=00 G% e+ ^* R+ Z' k: s3 A# O
.ends5 k! Z1 L5 j: T( Q
; f" D4 P& F. q; n5 {) \0 |5 Z+ F0 g
. C( y- C6 H; f2 y+ M**counter-5bit" _) B( L, ]2 W1 {+ Y- k: I$ k
.subckt counter-5bit ck clr tqa tqb tqc tqd tqe
. M/ U9 @9 K3 Xx10 ck clr tqa counter-1bit G/ D' @- V" }& z. s
x11 tqa clr tqb counter-1bit4 n, M: n- C" B% x! B8 G
x12 tqb clr tqc counter-1bit
* k0 \9 [% e ?x13 tqc clr tqd counter-1bit
. E- M* Y( n. i) D k) Zx14 tqd clr tqe counter-1bit
* {! |5 _1 h' X# r( v.ends |
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