Pulse width modulation

The pulse with modulation (PWM) module enables the generation of pulse width modulated signals
on GPIO. The module implements an up or up-and-down counter with four PWM channels that drive
assigned GPIOs.
The following are the main features of a PWM module:
• Programmable PWM frequency
• Up to four PWM channels with individual polarity and duty cycle values
• Edge or center-aligned pulses across PWM channels
• Multiple duty cycle arrays (sequences) defined in RAM
• Autonomous and glitch-free update of duty cycle values directly from memory through EasyDMA (no
CPU involvement)
• Change of polarity, duty cycle, and base frequency possibly on every PWM period
• RAM sequences can be repeated or connected into loops

Updated 3 months ago

Pulse width modulation


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