Port B

delene · Joined: 13 Oct 2003 Posts: 32

I currently have my LCD display connected to port b, as per the example provided. There is one pin which is not connected, but can be used as an external interrupt.

Can I use port b for the display and for the external interrupt?

temtronic · Posted: Sun Oct 16, 2011 11:56 am

hmm....you don't say which PIC you're using, or the connections to the LCD..(byte mode, nibble mode ?)
but...
If you're using a 16F877, you can use RB0/INT for the external interrupt.
Same holds true for the 18F4550 BUT you'll have to look at the datasheet for whatever PIC you're using to confirm.

delene · Joined: 13 Oct 2003 Posts: 32

Am using the pic18f452.
Have my pic connected up as per the examples. I will just move them all up a pin and try it out - hopefully I come right.

Thanks