How many days required to be in Brazil on PR?

Hi everyone,

Hope to find some information about PR requirements.

I know you have to visit Brazil every 2 years to keep your PR active.
But how long exactly does one need to be there?

Also, are there any other steps required?
Or is simply entering at an airport, your pasport being scanned, good enough?

Thank you in advance!
Flora

I had asked the same question to one of my friends in Policia Federal and the reply I received was that you can enter and exit at the same time if you prefer.  that's more than enough.

Ok, thank you!