over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
|VVCC_BOR–||Brownout power-down level
dDVCC/dt | < 3 V/s||0.73||1.66||V|
|VVCC_BOR+||Brownout power-up level(1)||| dDVCC/dt | < 3 V/s(2)||0.79||1.75||V|
(1) Fast supply voltage changes can trigger a BOR reset even within the recommended supply voltage range. To avoid unwanted BOR resets, the supply voltage must change by less than 0.05 volts per microsecond (±0.05 V/µs). Following the data sheet recommendation for capacitor CDVCC should limit the slopes accordingly.
(2) The brownout levels are measured with a slowly changing supply.
Section 188.8.131.52 lists the supply voltage supervisor characteristics.