+5 through a 4.7K resistor. Have also tried connecting a .1uF cap between MCLR and GND but doesn't seem to make a difference. The program loop actually starts runnning, but will only loop a couple of times before resetting. -----Original Message----- From: Carlos Ojea [mailto:carlosojea@LEVELTELECOM.ES] Sent: Wednesday, July 10, 2002 8:40 AM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC]: 18C452 reset problems >communications out of the loop, so that all it does is set and clear the >TRIS bit and PORT bit, and it still resets after the same amount of time. Where is your MCLR pin connected to? -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the sender immediately. This footnote also confirms that this email message has been swept by MIMEsweeper and Symantec Norton AntiVirus for the presence of computer viruses. ********************************************************************** -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu