Bob Blick schreef op 18-Nov-14 8:09 PM:
> I'm needing to detect ten external interrupts from pulses that can be
> very short so I won't be able to respond to a port-wide interrupt fast
> enough to poll the port for the interrupting pin or pins.
>
> I could use a one-shot or buskeeper circuit with diode before it but if
> I could find a micro that had separate interrupt vectors or built-in pin
> hold I could reduce parts count.
>
>

I/O expanders often have a pin-change interrupt, check for instance the=20
MCP23017.

Wouter van Ooijen
--=20
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