How is excommunication handled during an interregnum?

Not that I'm plotting anything heinous, but can one be excommunicated or have excommunication lifted during an interregnum? I think, but I'm not positive, that some offenses that carry excommunication can only be lifted by the Pope. So, in the absence of a Holy Father, who can lift excommunication or does someone just have to wait for a new Pope, even on the verge of death? On the flip side, it would seem to be an offense against charity to deliver [Latae Sententiae](https://christianity.stackexchange.com/questions/14846/what-is-latae-sententiae/14847#14847) excommunication without a possibility of repentance.