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 need the longest delay time for the voltage regulator and reference
circuitry to stabilize. (lowest current consumption)
- VREGPM =
'b11; this
mode is the same as VREGPM = 'b01, and is recommended for extended
temperature ranges at or above 70℃.