Table 5-1 Brownout and Device Reset Power Ramp Requirements
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER |
TEST CONDITIONS |
MIN |
MAX |
UNIT |
VVCC_BOR– |
Brownout power-down level(1) |
| 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.
Table 5-2 lists the supply voltage supervisor characteristics.