Hi I4m trying to interface a PIC (f84) with a Serial timekeeper from Holtek HT1380, h

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Hi
I4m trying to interface a PIC (f84) with a Serial timekeeper from Holtek
HT1380, has anybody already written some routines to communicate with the
HT1380??
What kind of routine should I use to read or write
 

Hi,

The datasheet for that chip shows the program flow and timing diagrams for communicating with a micro.

It used its own serial communications convention so you will have to write all your own Pic communications code. Assembler or C ?

The more popular Maxim DS1307 RTC chip uses a standard I2C interface, though you near obselete F84 chip does not have I2C unlike most other more modern chips.
 

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