How to generate an 10ms interrupt output of Real Time Clock PCF8583 from the pin7?

Thread Starter


Joined May 28, 2008

Does anyone know how to generate an interupt output from pin 7 of the Philips PCF8583 Real Time Clock? I am currently using PIC18F2620, mcc18.
I am writing the code in C .

I am trying to generate 10 ms, 1 sec and 5 sec interrupt from pin7 but i am not sure whether how to program it to give me exactly the timing that i want.

I understand that in order to generate the interrupt o/p, i have to set the appropiate bit for the alarm control register.
if i2c_send(0b00001000) // address 08 to write data to alarm control register
//follow by;
if i2c_send(0b01001001)
next, i am stuck till here, can anybody help me out of this asap.

Thank you for ur help=)