Datasheet

76
32117D–AVR-01/12
AT32UC3C
7.7.15 Reset Cause
Name: RCAUSE
Access Type: Read-only
Offset: 0x0180
Reset Value: Latest Reset Source
BOD33: Brown-out 3.3V reset
The CPU was reset due to the supply voltage being lower than the 3.3V Supply Monitor (BOD33) threshold level.
AWIRE: AWIRE Reset
The CPU was reset by the AWIRE
OCDRST: OCD Reset
The CPU was reset because the RES strobe in the OCD Development Control register has been written to one.
CPUERR: CPU Error
The CPU was reset because had detected an illegal access.
JTAG: JTAG Reset
The chip was reset by the JTAG system reset.
WDT: Watchdog Reset
The CPU was reset because of a watchdog time-out.
EXT: External Reset Pin
The CPU was reset due to the RESET pin being asserted.
BOD: Brown-out Reset
The CPU was reset due to the core supply voltage being lower than the brown-out threshold level.
POR: Power-on Reset
The CPU was reset due to the core supply voltage being lower than the power-on threshold level, or due to the input voltage
being lower than the minimum required input voltage for the voltage regulator.
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
- - BOD33 - AWIRE - - OCDRST
76543210
CPUERR - JTAG WDT EXT BOD POR