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Oscillator connections of pic16f777 micro controller

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maxim10373

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Dear All
Please find the attachment.
help me find out what is OSC_CAN (Y1)


regards

Ajitkumar
 

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  • OSC_CAN.BMP
    790.5 KB · Views: 45

That is a very strange circuit - where did you find it?
The capacitor values suggest the crystal or resonator is extremely low frequency, possibly sub Hz which would make it almost impossible to manufacture.

Brian.
 

Hi,
I am really sorry for some mistake of the previous attachment.
here attached the original of same.

This is a part of AN889 (microchip)three phase induction motor controller circuit.
used PIC16F777 microcontroller.

thanks

Ajitkumar
 

Attachments

  • Doc1.pdf
    86.5 KB · Views: 53

That makes slightly more sense.

The board has three oscillator options:

1. Do not fit OSC_CAN, C33, C34 or Y1. Fit the link - the oscillator can then run in RC mode.
2. Do not fit OSC_CAN or the link but do fit C33, C34 and Y1. The oscillator then runs in internal crystal (LP, XT or HS mode) at the crystal frequency.
3. Fit OSC_CAN but do not fit the link, C33, C34 and Y1. The oscillator then runs in external clock source mode.

So answering your question, OSC_CAN is four pin oscillator module. One that has the crystal inside it and produces a square wave output. You choose the frequency you want, they are available from a few KHz up to around 100MHz.

Brian.
 
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