![]() The input sources and bit selection settings may vary from device to device. The input source selection bits are used for selecting the input source. ![]() Input sources can be external inputs to the CWGxIN pin or outputs from other internal peripherals. 1: Simplified block diagram of a complementary waveform generator The output can also be terminated immediately during a fault and recovered when the fault is removed.įig. Each output pin has individual output enable control and the polarity of these pins can be controlled individually. The clock source can be selected and used to insert a dead-band delay between the pair of complementary output waveforms. The output can be modified in different modes of operation, such as push-pull, half bridge, full bridge and steering PWM. 1 shows a block diagram of such a peripheral.Įach block in this diagram represents a feature of the CWG, which generates a complementary output from one of several selectable inputs. ![]() These functions can be provided as a peripheral in some 8bit microcontrollers with no processor overhead. ![]() Even better if the generator also has selectable input sources, polarity control, auto-shutdown and auto-recovery. How a complementary waveform generator found in 8bit microcontrollers can help in motor driver applicationsĪ complementary waveform generator (CWG) can be handy for when half-bridge and full-bridge control is needed, such as in motor driver applications, for example. ![]()
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