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How do you measure a clock frequency?
Modern frequency counters use a technique called reciprocal counting to make a frequency count. With this method, the gate (measurement) time is synchronous with the input signal, so the measurement error is limited to one reference clock cycle. For better resolution, the reference frequency is multiplied.
What is the frequency of the internal clock?
The internal oscillator is simple to operate. It is the default clock source for the microcontroller unit (MCU) after any reset. The frequency is fixed at a base of 12.8 MHz, but can vary from part-to-part by ±25% due to variations in the manufacturing process.
What is the clock frequency of stm32?
STM32
| General information | |
|---|---|
| Discontinued | Current |
| Designed by | STMicroelectronics |
| Performance | |
| Max. CPU clock rate | 24 to 480 MHz |
What do I need for a PIC frequency counter?
All you need is a PIC microcontroller (or any microcontroller that has a high speed timer input module) and a 2 line LCD display (the standard HD44780 one is the one used here). This PIC frequency counter project uses an LCD to display the frequency and PIC timer 1 to measure the input signal and Timer0 to measure the timing period.
How to make digital frequency meter using PIC microcontroller?
Here you will see how easily we can make Digital frequency meter by PIC microcontroller using timer 1. To make this project we need clear idea on timer 1 module of PIC16F877 microcontroller.
How to check Pic system clock speed MCU?
In the data sheet you linked above, see chapter 9 (Oscillator configuration) and look for ‘REFCLKO’. You can route either the primary oscillator directly to the REFCLKO pin, or Fosc (which would be the frequency after the PLL in your case). According to the datasheet, it should be available on your dsPIC.
How to make a 50MHz frequency counter?
It uses Timer 1 in 16 bit counter mode to count the input signal edges and overflows of the counter are accumulated to give the total count in multiples of 65536.Adding the current value of the counter at the end gives the total count. The crystal oscillator is chosen to be 4MHz (Fosc) so that the processor internal clock is 1MHz (Fosc/4).
https://www.youtube.com/watch?v=M5jPSiXb0LU