9.2 Brown-out Reset (BOR)

The BOR circuit holds the device in Reset when V_DD reaches a selectable minimum level. Between the POR and BOR, complete voltage range coverage for execution protection can be implemented.

The Brown-out Reset module has four operating modes controlled by the BOREN<1:0> bits in Configuration Words. The four operating modes are:

• BOR is always on
• BOR is off when in Sleep
• BOR is controlled by software
• BOR is always off

Refer to “BOR Operating Conditions” table for more information.

The Brown-out Reset voltage level is selectable by configuring the BORV<1:0> bits in Configuration Words.

A V_DD noise rejection filter prevents the BOR from triggering on small events. If V_DD falls below V_BOR for a duration greater than parameter T_BORDC, the device will reset.