Parametric analysis with Spectre simulator and Ocean script

[Wawan66]

spectre ocean script

Hi,

I'm trying to simulate a basic SRAM cell 6T with Cadence Spectre simulator and Ocean script. More precisely, I need to carry out a parametric analysis but I haven't succeeded in. Here's my netlist :

/////////////////////////////
// basic gates description //
/////////////////////////////

subckt sramCell WL BLb BL
M0 net0 net1 0 0 nsvt w=0.12 l=0.1
M1 net0 net1 vdd! vdd! psvt w=0.12 l=0.1
M2 net1 net0 0 0 nsvt w=0.12 l=0.1
M3 net1 net0 vdd! vdd! psvt w=0.12 l=0.1
M4 BLb WL net0 0 nsvt w=0.12 l=0.1
M5 BL WL net1 0 nsvt w=0.12 l=0.1
C0 net0 0 capacitor c=700a
C1 net1 0 capacitor c=700a
ends sramCell

/////////////////////////////////
// end basic gates description //
/////////////////////////////////

I0 WL BLb BL sramCell
C0 BLb 0 capacitor c=cap
C1 BL 0 capacitor c=cap

and my Ocean script :

simulator('spectre)
definitionFile("corners")
design("netlist")
stimulusFile(?xlate nil "stimuli.scs")
resultsDir("./results")
paramAnalysis("cap" ?start 10f ?stop 500f ?step 10f)

ic("I0.net0" 0 "I0.net1" 1 "WL" 0 "BLb" 1 "BL" 1)

save('v "I0.net0")

temp(27)

paramRun()

clearAll()
plot(v("I0.net0") ?expr list("Qb"))

What's the problem? Each time I run a simulation, an error message indicate the variable "cap" isn't defined in the current design!

Thx alot for your help.

 

[analog_guru]

spectre parametric analysis

This does not look to me a spectre netlist...It looks like it is an hspice one!