----- Original Message ----- From: "Simon Gerblich" To: Sent: Monday, March 11, 2002 12:18 AM Subject: [PIC]:Maximum interrupt rise/fall time? > Hi, > > Does anyone know the maximum rise and fall times that are safe to use > for the INT pin on a PIC17C756A running at 16MHz? > > The "fall time" from the encoder signal I am using for my interrupt > on the INT pin is about 200ns and seems to work well, but I suspect > now that the interrupt is being missed intermittently. > > I found a value of 25ns as the "min INT pin high low time" > in DS30289A-page248 but don't know if this is the value I am > looking for. This is how long the pin must remain in the high or low state for the interrupt to be certain to be detected. > > Simon > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body