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HI ALL,
Using portb as output : working well.
Using porta.0 to 7 except porta.4 & 5 as input with pull-up resistor working well with 0v trigger, Can i use also a pull-up resistor to porta.4 &5? or do i need to use pull-down resistor then trigger with +5v input.. Looking for help before messing up my IC.( didn't try yet,)
Thanks.
you should be able to wire the resistor as a pullup or pulldown depending on what your input signal is.
Hi, Naga
you can always use pullup or pulldown with inputs ...
But take care to PORTA.4 and 5 ... They're not protected against voltage over VDD !!! ( see Datasheet p 33 ...)
Alain
Thanks to all, Is there any way that can porta.5 be used as output?..Thanx again.
Hi,
The only way is to use it as output is as an OPEN Collector output ...
Alain