Thank you, but I didn't use sleep... And the T1sync bit HAS influence!! I've tested it twice. If zero, the timer did not run. Jo ----- Original Message ----- From: "Colombain Nicolas" To: Sent: Sunday, September 28, 2003 2:27 PM Subject: Re: [PIC:] timer1 on 16F628 > Hi Jo, > > The T1Sync bit has no influence when using the internal clock as long as you > are not in sleep mode ..... > If T1Sync is set to 0 and the PIC is in sleep, the timer 1 will never > increment.. > Nicolas > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu