Da li im ovo "built-in" znači da je taj oscillator bukvalno ugrađen unutar MCU-a?A low-power 32.768 kHz oscillator is built-in between pins T1OSI (input) and T1OSO (amplifier output). The oscillator is enabled by setting the T1OSCEN control bit of the T1CON register. The oscillator will continue to run during Sleep.
Jer kada ga aktiviram Tmr1 mi se jednostavno ne želi pokrenuti.
http://s8.postimg.cc/5edi9ldl1/tmr1_block.png
Koristim interni oscilator 4MHz, bez CLCKOUT (IO funkcije na OSC1 i OSC2 pinovima) što i zahtijeva ovaj Tmr1 oscilator.

