Try one of the 32MZ's with input capture (max 16 channels) they look like
they might be useful you can trigger timers to capture lengths...=20

Steve

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
Bob Blick
Sent: 18 November 2014 19:10
To: piclist@mit.edu
Subject: [EE] Any micros with bus or pin-hold circuitry, or gobs of pin
interrupts?

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.=20

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.

At this point I am planning to use a buskeeper circuit and port-wide
interrupts, poll the pins, then turn the pins into outputs and clear the
buskeepers.

Any other ideas would also be welcome!

Thanks, Bob

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