Thanks Ravi, the code worked perfect with the F84 !!! :-) Do you know why the other code didn4t work, seemed ok ?? Next I4ll try the Burst mode and add a backup battery, I4ll use 2 diodes to switch the batt on when the main power supply is off, do you think it will work ?? Bye Javier -----Mensaje original----- De: Ravi Pailoor Para: PICLIST@MITVMA.MIT.EDU Fecha: Martes 16 de Febrero de 1999 13:40 p.m. Asunto: Re: Serial timeeper HT 1380 Hi Javier, Please find attached the code for HT 1380 which I wrote to test the RTC. This is the actual code that worked with a 16C54. Sorry there is no schematic, I just rigged it on a breadboard and tested. Try this and let me know. Bye Pailoor ----------------------------------------------------------------------- Chip Technologies - Microchip Design Consultant No. 70, 9th Main Road, Mathikere, Bangalore - 560 054. INDIA Tel : +91-80-3362807, Fax : +91-80-3369451 Email : chiptech@vsnl.com Webpage : http://business.vsnl.com/chiptech ( Updated on 16th February ) -----------------------------------------------------------------------