button input PIC16F877

[ob38]

Hi,

I'm buiding a new card, and before doing a mistake, i would like to know if we can connect ON/OFF buttons as inputs on RC, RD and RE ports on the PIC16F877.
I ask you because i saw, on documentation, that they are Schimdt trigger and not TTL or CMOS ports.


Please, let me know about this.

Thanks in advance

Regards

Olivier

[Melanie]

You can connect as many Buttons (Switches) to as many PIC pins as you wish.

[sayzer]

You can also use AN0 to read multiple buttons via different resisitor values.

This way, you use one pin and have many buttons; leave all other pins for other jobs.

[ob38]

Many thanks to you