Reset Flag Register
Bit7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UPDIRF | SWRF | WDRF | EXTRF | BORF | PORF | ||
AccessR | R | R/W | R/W | R/W | R/W | R/W | R/W |
Reset0 | 0 | x | x | x | x | x | x |
UPDI Reset Flag
This bit is set if a UPDI Reset occurs.
Software Reset Flag
This bit is set if a Software Reset occurs.
Watchdog Reset Flag
This bit is set if a Watchdog Reset occurs.
External Reset Flag
This bit is set if an External Reset occurs.
Brown-Out Reset Flag
This bit is set if a Brown-out Reset occurs.
Power-On Reset Flag
This bit is set if a Power-on Reset occurs.
This flag is only cleared by writing a '1' to it.
After a POR, only the POR flag is set and all other flags are cleared. No other flags can be set before a full system boot is run after the POR.