I have used all of the port pins on my 8051 device but have a spare interrupt pin. Is it possible to use this spare interrupt as an extra port pin for reading/writing?
Is it possible to use this spare interrupt as an extra port pin for reading/writing? You should be able to. Check the datasheet for the alternate uses for the pin. If it's simply a port pin whose alternate use is an interrupt input then you can use it as an I/O pin. Jon
you can wiggle an interrupt pin to your hearts delight if that interrupt is not enabled in the IE sfr. Erik