Datasheet

Recoverable fault sources can be filtered and/or windowed to avoid false triggering, for example from I/O

pin glitches, by using digital filtering, input blanking, and qualification options. See also 31.6.3.5

Recoverable Faults.

In order to support applications with different types of motor control, ballast, LED, H-bridge, power

converter, and other types of power switching applications, the following independent units are

implemented in some of the TCC instances as optional and successive units:

• Recoverable faults and non-recoverable faults

• Output matrix

• Dead-time insertion

• Swap

• Pattern generation

See also Figure 31-1.

The output matrix (OTMX) can distribute and route out the TCC waveform outputs across the port pins in

different configurations, each optimized for different application types. The Dead-Time Insertion (DTI) unit

splits the four lower OTMX outputs into two non-overlapping signals: the non-inverted low side (LS) and

inverted high side (HS) of the waveform output with optional dead-time insertion between LS and HS

switching. The SWAP unit can swap the LS and HS pin outputs, and can be used for fast decay motor

control.

The pattern generation unit can be used to generate synchronized waveforms with constant logic level on

TCC UPDATE conditions. This is useful for easy stepper motor and full bridge control.

The non-recoverable fault module enables event controlled fault protection by acting directly on the

generated waveforms of the timer/counter compare channel outputs. When a non-recoverable fault

condition is detected, the output waveforms are forced to a preconfigured value that is safe for the

application. This is typically used for instant and predictable shut down and disabling high current or

voltage drives.

The count event sources (TCE0 and TCE1) are shared with the non-recoverable fault extension. The

events can be optionally filtered. If the filter options are not used, the non-recoverable faults provide an

immediate asynchronous action on waveform output, even for cases where the clock is not present. For

further details on how to configure asynchronous events routing, refer to section EVSYS – Event System.