ATmega328PB

22.1 Overview

The Output Compare Modulator (OCM) allows generation of waveforms modulated with a carrier frequency. The modulator uses the outputs from the Output Compare Unit B of the 16-bit Timer/Counter3 and the Output Compare Unit of the 16-bit Timer/Counter4. For more details about these Timer/Counters see 16-bit Timer/Counter. When the modulator is enabled, the two output compare channels are modulated together as shown in the block diagram (as the following figure).

Figure 22-1. Output Compare Modulator, Block Diagram

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