PORT Pin problem

hi,
I use DIGICONNECT EM kit.In that i would like to know where is the PORT C and which pin is port c0,c1,c3 and external interrupt pin.

Regards
shan

Check out the Hardware Reference Guide: http://ftp1.digi.com/support/documentation/90000632_H.pdf starting on page 39, and comparing it to the pinout on page 14.