How can you achieve decent clock accuracy in microcontrollers

How can you achieve decent clock accuracy in microcontrollers (e.g. ...

There are some "oven-controlled crystal oscillators" that are necessary for accurate time that maintain temperature of the crystal.

How can I improve the accuracy of the internal real time clock?

A more economical choice would be a tcxo (temperature compensated/controlled crystal oscillator). They get down to better than 5ppm stability with initial ...

Best way to clock MCU for precision timing application

I would implement a bus-clock driven basic timer, adjusting it by an external interrupt driven input from your VCO. 1s or 2s pace is ok: an externally clock ...

How Important is Your Microcontroller Clock Source?

Typically, a microcontroller with good thermal management can deliver a clock signal with an accuracy in the range of 1% to 5%. This may be good ...

Accuracy of the 32kHz clock on the attiny1616 : r/microcontrollers

For a truly accurate RTC that meets strict timing requirements without using an external crystal, an RTC calibration procedure or software ...

Fast microcontroller clock - Arduino Forum

Increasing the frequency of the time base will improve the accuracy ... Thanks for response, I still researching what is the best way to achieve ...

Microcontroller Crystal Accuracy - Forum for Electronics

Entirely depends upon how accurate a clock frequency you need. What are you doing with the micro that requires an accurate clock?

Accurate time keeping with Pic uC - All About Circuits Forum

Here are some general guidelines on MCU clocks: 1) Use internal oscillator for lowest parts count and least concern on frequency stability and ...

How can you test the accuracy of a microcontroller's clock? - LinkedIn

There are two main ways to measure the clock accuracy of a microcontroller: using an external reference or using an internal counter.

The Role of Oscillators in Microcontrollers - PCB Design & Analysis

Internal RC circuit - The internal RC oscillator circuit in microcontrollers generates clock signals. However, the accuracy is very much ...

Part 1: Introduction to the STM32 microcontroller clock system

The PLL provides the flexibility to increase the clock speed after the application PCB board has already been designed and deployed. Good to ...

Fastest high resolution timer in a microcontroller? | All About Circuits

Take a look at the STM32H743 that can be clocked at 400MHz (2.5ns resolution). Edit: I see that STM32F334 has a high-resolution timer that is ...

Is overclocking a microcontroller as easy as replacing the crystal ...

The critical aspect of the clock in microcontroller systems is typically not the speed but the accuracy. Microcontrollers are often chosen ...

accuracy of a digital clock if using MCU | Forum for Electronics

Aside from chips having a different clock speed, the crystal also cannot generate an exact frequency output. It is always good to get an RTC ...

Microsecond accurate microcontroller? - adafruit industries

Any serious discussion of accuracy has to include tolerances. The clocks in a microcontroller without a crystal are stable to maybe 1 part in 20 ...

clock frequency measurement - NXP Community

Then the software can measure (to the microsecond or better) how long it thinks the signal period took, and that gives the current clock accuracy, and with ...

accurate timing/clock for microcontroller? (for measuring bpm)

inaccuracy but you can calibrate that out or get a more accurate clock. ... its no big deal. ... you can easily hook up a better clock later on to ...

PPM Clock accuracy examples - Best Microcontroller Projects

So the maximum error after a day has passed is 1% of 86400 = 864 seconds = 14.4 minutes! Error: 14.4 minutes error per day. How good is a typical crystal ? A ...

Keeping accurate time - Science and Measurement - Arduino Forum

You should be able to get better than 5000ppm (0.5%) even with a ceramic resonator, and 100ppm or better with the microcontroller clock ...

What is the right way to see the clock frequency of my micro ... - Quora

Another way is to set the microcontroller up so that the internal clock shows up at the clock out pin, and measure with a counter or ...