How do I simulate simple RC circuit in Spetre?

[zongya]

Hi all,

I'm trying to simulate the basic RC circuit with Spetre. Here is my circuit.

I built it with Cadence Virtuoso. But when I try to simulate it in Spectre, it gives me square output just as input, no charging period.

I do select trans, 20ms.
How can I get the right result?
Thanks in advance!

Zongya

 

[FvM]

You have RC time constant chosen as 500 ps. Charging period is respectively.

Try again with µF capacitor.

 

[zongya]

I changed capacitance to 1 uF and it works! Thank you!