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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# n* M$ J; |' h+ _ ]! T5 A# Q( O
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
/ t2 |# U7 g' b; a1 |**and25 e% A' M: {7 H, K* V
.subckt and2 4 5 3+ v, b+ O/ o$ r
m1 1 5 0 0 nch5 w=1.5u l=1u) W9 Z) h8 Q/ W
m2 2 4 1 0 nch5 w=1.5u l=1u, U" j9 v4 F; V- \/ k9 b7 e/ V
m3 3 2 0 0 nch5 w=1.5u l=1u
: p' R1 y# s' v" o4 A0 G! Q, vm4 2 4 vdd vdd pch5 w=3u l=1u& r7 i \( U6 w% |9 b' ^
m5 2 5 vdd vdd pch5 w=3u l=1u
" Z, R J! V' [- M2 {- [m6 3 2 vdd vdd pch5 w=3u l=1u# ^6 U' l- ~" u9 C4 ~9 K
.ends
6 Z$ j5 p) K9 ?, F [ t/ h- Q2 ^! ?; l$ u5 J* ]1 J' g
**nand2
! c/ i0 @ `- X+ s.subckt nand2 4 5 2
$ T; p4 n' z) ~! D) ^0 f; Bm1 1 5 0 0 nch5 w=1.5u l=1u2 q) ] t/ q7 W$ a5 x5 @3 c
m2 2 4 1 0 nch5 w=1.5u l=1u$ \: b7 C: R# z+ C" g
m4 2 4 vdd vdd pch5 w=3u l=1u9 D- N2 ^/ f: G0 ` ?1 C# j* o
m5 2 5 vdd vdd pch5 w=3u l=1u
j# c, }- @: {( [& o+ l.ends
; z7 n/ c. W$ p a, b' K. u0 i2 _4 F: y3 [ V! {
**nand3
: j p1 ]: p7 _' U: { U, u.subckt nand3 5 6 7 3' Q* h% z' ~2 v7 @& y( J: Y
m1 1 7 0 0 nch5 w=1.5u l=1u8 x3 R$ N; I1 u" @) L
m2 2 6 1 0 nch5 w=1.5u l=1u* Y5 w% k5 g# h3 p
m3 3 5 2 0 nch5 w=1.5u l=1u% M' S, S7 c% j1 D9 R: ]7 d
m5 3 5 vdd vdd pch5 w=3u l=1u" r k; I: ~" g1 u: S, M* p
m6 3 6 vdd vdd pch5 w=3u l=1u# w8 e, n% O; U9 `6 Z! P
m7 3 7 vdd vdd pch5 w=3u l=1u
- |( w X! c: x/ F0 |# F.ends
8 C* d) A, I; u4 y6 L9 I n/ M7 w% X. }) f' P- R
.subckt td-ff d clk clr q q-. q9 p2 |1 J5 e) t: |$ F0 X
x1 b4 b2 b1 nand2
e6 z# Q4 R. p! j* v0 `7 D- Px2 b1 clr clk b2 nand3
0 m" k- v6 [- T+ ~) Sx3 b2 clk b4 b3 nand31 ]8 u& T7 ^% L# t+ w
x4 b3 clr d b4 nand3- l8 l3 J% r. k/ y
x5 b2 q- q nand2, x& g9 ?6 X+ m3 Y
x6 q clr b3 q- nand3
- b' [* n% t$ O; ^3 l6 E/ U.ends
: o4 u8 Q, y" n# K, Y; V
& U) E$ o1 q) L9 m m$ v& y) f% P9 h- ]" I* k$ x! W/ J
**counter-1bit
1 P$ {9 D( {1 g3 I' D8 ^ T. W.subckt counter-1bit ck clr q
" T$ C0 W2 m' Vx7 d clk clr q q- td-ff
2 \9 F' _* n# c. A5 n# Dx8 q- t d and2# j( m) C E' o" g, k3 }
x9 ck clk not 0 v% b* `4 Y; e) R. ?/ \! ]
.ic v(d)=0
, q$ x9 s9 [/ _9 s.ends
- ?& G: m1 b* q
# N% s0 k+ G, s/ b
" {% [/ O$ @8 l! F: g$ W& r**counter-5bit
4 G( I z5 m {& Y1 _8 Q/ c& p.subckt counter-5bit ck clr tqa tqb tqc tqd tqe 0 Y+ I; s3 J: m
x10 ck clr tqa counter-1bit1 v% t- p3 v4 E
x11 tqa clr tqb counter-1bit
8 }4 F! L0 m! A8 l3 {x12 tqb clr tqc counter-1bit) R8 f6 \3 O: o% p
x13 tqc clr tqd counter-1bit" `+ }( I6 o( f& c( Y- N8 A) O/ l
x14 tqd clr tqe counter-1bit, I9 B8 J4 Q6 V- o5 y
.ends |
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