STM32 Timer Configuration Calculator
STM32 microcontrollers use timers for generating precise time intervals, PWM signals, and more. This calculator helps you configure the timer's Prescaler and Auto-Reload Register (ARR) to achieve a desired frequency, based on your system's core clock.
How to configure a desired clock rate:
STM32 timers divide the SystemCoreClock using two registers:
- Prescaler (PSC): Divides the system clock before the counter increments.
- Auto-Reload Register (ARR): Sets the timer period before it resets.
The timer frequency is calculated as:
\[ f_{\text{timer}} = \frac{\text{SystemCoreClock}}{(\text{Prescaler} + 1) \times (\text{ARR} + 1)} \]
To find Prescaler and ARR for a desired frequency, you typically fix one (e.g., keep Prescaler low for higher resolution) and solve for the other. This calculator helps simplify that process.
This is crucial when generating PWM signals, periodic interrupts, or precise time delays in STM32 applications.
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