maitouk
Joined: 11 May 2008
Posts: 1
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 11 May 2008 0:50 Simulating T-flip Flop in Pspice |
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Hello,
I'm trying to simulate a T-flip flop in P-spice I've written the netlist and it runs when i trace the outputs it doesn't Flip or Flop as it has to. i dunno what the problem.
Here is my netlist
| Code: |
cmos
vclk 2 0 pulse(0 5 1n 1n 1n 50u 100u)
vT 1 0 dc 5
X1 1 2 6 3 and3
X2 1 2 5 4 and33
X3 3 6 5 and2
X4 4 5 6 and22
.subckt inverter 2 3
M1 3 2 1 1 modp l=5u w=100u AS=40p PS=246u AD=54p PD=30u
M2 0 3 3 3 modpdep l=5u w=30u AS=40p PS=246u AD=54p PD=30u
Vdd 1 0 dc 5
*vin 4 0 pulse ( 0 5 0 1n 1n 2u 4u)
.ends inverter
.subckt and3 2 4 6 3
M1 0 0 3 3 modpdep l=10u w=20u
M2 3 2 1 1 modp l=10u w=100u
M4 3 6 1 1 modp l=10u w=100u
M3 3 4 1 1 modp l=10u w=100u
Vdd 1 0 dc 5
.ends and3
.subckt and33 2 4 6 3
M1 0 0 3 3 modpdep l=.5u w=25u
M2 3 2 1 1 modp l=5u w=100u
M4 3 6 1 1 modp l=5u w=100u
M3 3 4 1 1 modp l=5u w=100u
Vdd 1 0 dc 5
.ends and33
.subckt and2 2 6 3
M1 0 0 3 3 modpdep l=10u w=20u
M2 3 2 1 1 modp l=.5u w=100u
M4 3 6 1 1 modp l=.5u w=100u
Vdd 1 0 dc 5
.ends and2
.subckt and22 2 6 3
M1 0 0 3 3 modpdep l=1u w=20u
M2 3 2 1 1 modp l=.5u w=100u
M4 3 6 1 1 modp l=.5u w=100u
Vdd 1 0 dc 5
.ends and22
.MODEL modp PMOS ( LEVEL = 7
+VERSION = 3.1 TNOM = 27 TOX = 5.7E-9
+XJ = 1E-7 NCH = 4.1589E17 VTH0 = -0.5787177
+K1 = 0.635996 K2 = 1.380646E-3 K3 = 0
+K3B = 10.0951255 W0 = 1E-6 NLX = 9.729342E-9
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 2.0857552 DVT1 = 0.7947098 DVT2 = -0.1828928
+U0 = 109.770631 UA = 1.297165E-9 UB = 1E-21
+UC = -1E-10 VSAT = 1.758693E5 A0 = 1.1837275
+AGS = 0.1940279 B0 = 4.348043E-8 B1 = -1E-7
+KETA = 8.233118E-3 A1 = 0.0239481 A2 = 0.3
+RDSW = 1.608502E3 PRWG = -0.0283154 PRWB = -0.1464045
+WR = 1 WINT = 0 LINT = 2.710959E-8
+XL = 0 XW = -4E-8 DWG = -3.836858E-8
+DWB = 1.80516E-9 VOFF = -0.1226156 NFACTOR = 1.2563609
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 0.659241 ETAB = -0.3006951
+DSUB = 1.5 PCLM = 1.2973063 PDIBLC1 = 0.0122384
+PDIBLC2 = 5.404201E-8 PDIBLCB = -5.969391E-4 DROUT = 0.1640624
+PSCBE1 = 1.093973E10 PSCBE2 = 3.344252E-7 PVAG = 2.77822E-3
+DELTA = 0.01 RSH = 3.2 MOBMOD = 1
+PRT = 0 UTE = -1.5 KT1 = -0.11
+KT1L = 0 KT2 = 0.022 UA1 = 4.31E-9
+UB1 = -7.61E-18 UC1 = -5.6E-11 AT = 3.3E4
+WL = 0 WLN = 1 WW = 0
+WWN = 1 WWL = 0 LL = 0
+LLN = 1 LW = 0 LWN = 1
+LWL = 0 CAPMOD = 2 XPART = 0.5
+CGDO = 6.49E-10 CGSO = 6.49E-10 CGBO = 1E-12
+CJ = 1.878589E-3 PB = 0.9780486 MJ = 0.4653036
+CJSW = 3.439462E-10 PBSW = 0.8485755 MJSW = 0.3562412
+CJSWG = 2.5E-10 PBSWG = 0.8485755 MJSWG = 0.3562412
+CF = 0 PVTH0 = 4.600436E-3 PRDSW = -8.0409318
+PK2 = 2.471543E-3 WKETA = 0.02672 LKETA = -6.003097E-3 )
.MODEL modpdep PMOS ( LEVEL = 7
+VERSION = 3.1 TNOM = 27 TOX = 5.7E-9
+XJ = 1E-7 NCH = 4.1589E17 VTH0 = 0.5787177
+K1 = 0.635996 K2 = 1.380646E-3 K3 = 0
+K3B = 10.0951255 W0 = 1E-6 NLX = 9.729342E-9
+DVT0W = 0 DVT1W = 0 DVT2W = 0
+DVT0 = 2.0857552 DVT1 = 0.7947098 DVT2 = -0.1828928
+U0 = 109.770631 UA = 1.297165E-9 UB = 1E-21
+UC = -1E-10 VSAT = 1.758693E5 A0 = 1.1837275
+AGS = 0.1940279 B0 = 4.348043E-8 B1 = -1E-7
+KETA = 8.233118E-3 A1 = 0.0239481 A2 = 0.3
+RDSW = 1.608502E3 PRWG = -0.0283154 PRWB = -0.1464045
+WR = 1 WINT = 0 LINT = 2.710959E-8
+XL = 0 XW = -4E-8 DWG = -3.836858E-8
+DWB = 1.80516E-9 VOFF = -0.1226156 NFACTOR = 1.2563609
+CIT = 0 CDSC = 2.4E-4 CDSCD = 0
+CDSCB = 0 ETA0 = 0.659241 ETAB = -0.3006951
+DSUB = 1.5 PCLM = 1.2973063 PDIBLC1 = 0.0122384
+PDIBLC2 = 5.404201E-8 PDIBLCB = -5.969391E-4 DROUT = 0.1640624
+PSCBE1 = 1.093973E10 PSCBE2 = 3.344252E-7 PVAG = 2.77822E-3
+DELTA = 0.01 RSH = 3.2 MOBMOD = 1
+PRT = 0 UTE = -1.5 KT1 = -0.11
+KT1L = 0 KT2 = 0.022 UA1 = 4.31E-9
+UB1 = -7.61E-18 UC1 = -5.6E-11 AT = 3.3E4
+WL = 0 WLN = 1 WW = 0
+WWN = 1 WWL = 0 LL = 0
+LLN = 1 LW = 0 LWN = 1
+LWL = 0 CAPMOD = 2 XPART = 0.5
+CGDO = 6.49E-10 CGSO = 6.49E-10 CGBO = 1E-12
+CJ = 1.878589E-3 PB = 0.9780486 MJ = 0.4653036
+CJSW = 3.439462E-10 PBSW = 0.8485755 MJSW = 0.3562412
+CJSWG = 2.5E-10 PBSWG = 0.8485755 MJSWG = 0.3562412
+CF = 0 PVTH0 = 4.600436E-3 PRDSW = -8.0409318
+PK2 = 2.471543E-3 WKETA = 0.02672 LKETA = -6.003097E-3 )
.tran 0 1m 0.01u
.probe
.end |
I'm using here arbitrary feature length and width values for testing.
thanks
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