6.1.2.2 Reset Sources
The controller has five sources of reset:
1. External reset input pin (RST) assertion, see “RST Pin Assertion” on page 55.
2. Power-on reset (POR), see “Power-On Reset (POR)” on page 56.
3. Internal brown-out (BOR) detector, see “Brown-Out Reset (BOR)” on page 56.
4. Software-initiated reset (with the software reset registers), see “Software Reset” on page 57.
5. A watchdog timer reset condition violation, see “Watchdog Timer Reset” on page 57.
After a reset, the Reset Cause (RESC) register is set with the reset cause. The bits in this register
are sticky and maintain their state across multiple reset sequences, except when an internal POR
is the cause, and then all the other bits in the RESC register are cleared except for the POR indicator
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