The Low-Power Sleep mode can be selected by setting the
VREGPM bits as following:
- VREGPM =
‘b00; the
voltage regulator is in High Power mode. In this mode, the voltage regulator and
reference circuitry remain in the normal configuration while in Sleep. Hence, there
is no delay needed for these circuits to stabilize after wake-up (fastest wake-up
from Sleep).
- VREGPM =
‘b01; the
voltage regulator is in Low Power mode. In this mode, when waking up from Sleep, an
extra delay time is required for the voltage regulator and reference circuitry to
return to the normal configuration and stabilize (faster wake-up from Sleep).
- VREGPM =
‘b10; the
voltage regulator is in Ultra-Low Power mode. In this mode, the voltage regulator and
reference circuitry are in the lowest current consumption mode and all the auxiliary
circuits remain shut down. Wake-up from Sleep in this mode needs the longest delay
time for the voltage regulator and reference circuitry to stabilize (lowest current
consumption).
- VREGPM =
‘b11; this
mode is the similar to the Ultra-Low Power mode (VREGPM = ‘b10), and
is recommended ONLY for extended temperature ranges at or above 70℃.