I'm using PIC16F690. I'm having problem with RB port/change interrupt. First of all I set RABPU=0 in Bank1 I went to Bank2 and set all 4 high bits in WPUB and IOCB to high by writting FF to addresses 15h & 16h. In Bank0 I set bit 3 of address B(INTCON).
Now I don't see the weak pullup on the pin and even if I use a 10K resistor and temporarily pull the pin up, I still don't get the port chang interrupt to function????
Now I don't see the weak pullup on the pin and even if I use a 10K resistor and temporarily pull the pin up, I still don't get the port chang interrupt to function????