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What is LP-OSC, HS_osc, EC_osc?

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simonwai999

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lp_osc

hi guys
as i know Xt_osc is for external osc up to 4M
am i right?
What is LP-OSC, HS_osc, EC_osc?
Thanks in advance
 

Re: Lp_osc, xt_osc

Please refer to the data sheet of the concerned microcontroller you want to use, e.g for a PIC16F87xA page 145, section 14.2 gives you details about types of oscillators and configurations.
• LP Low-Power Crystal
• XT Crystal/Resonator
• HS High-Speed Crystal/Resonator
• RC Resistor/Capacitor
For other families of mcu refer to their respective datasheets.
 
Re: Lp_osc, xt_osc

XT mode means that you can use with crystals up to 4MHz (XTAL not EXTERNAL - this is the source of your confusion with the two letters) to form the PIC oscillator, but nothing is wrong if you use an external 2, 3 or 4MHz external signal clock coming from another oscillator into the osc input pin if XT mode is selected.
 

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