I have a problem with the RTCC clock setting

(instructions, reset, WDT, specifications...) PIC17Cxx, PIC18Fxxx

I have a problem with the RTCC clock setting

Postby Landrover » Fri Mar 25, 2022 11:03 pm

Processor: P18F87K22 with RTCC

The processor is operated with internal clock source (32MHz).
The setting is done according to the datasheet and is OK.

In parallel I want to use the RTCC module with external clock source
(crystal = 32.768 KHz).
I can't find suitable parameters for this mode.

Connection: Pin 50 = OSC2/CLKO/RA6 = In/Out Pin
Pin 49 = OSC1/CLKI/RA7 = In/Out Pin

Pin 36 = SOSCO/RC0 = Crystal Pin1 (32.768 KHz)
Pin 35 = SOSC/RC1 = Crystal Pin2

My question: Can both frequencies run at the same time ?
What settings do I have to make ?

Thanks in advance for all hints!
Landrover
 
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Joined: Fri Mar 25, 2022 10:39 pm

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