Post by thread:PIC leakage current question

I've been considering using the PIC for a high-volume application (in portable computing) which requires low input leakage current. The input leakage current on PIC i/o ports is spec'ed at +/- 1 uA max (typical .5 uA). However, I've made measurements (@ 25 degrees C) and they show the leakage to be less than 10 fempto amps (yes, *fempto* amps). Heating the PIC (with a heat shrink gun) did not measurably increase the leakage current. Does anyone know why they are spec'ed at such a high leakage? Do occasional batches have a higher leakage? Do only certain environmental extremes cause high leakage current? Joe Betts IBM