Intel ULV 713 RJ80535UC0051M Data Sheet
Product codes
RJ80535UC0051M
Intel
®
Pentium
®
M Processor Datasheet
15
Low Power Features
2.4
Processor Power Status Indicator (PSI#) Signal
The Intel Pentium M processor incorporates the PSI# signal that is asserted when the processor is
in a low power (Deep Sleep or Deeper Sleep) state. This signal is asserted upon Deep Sleep entry
and deasserted upon exit. PSI# can be used to improve the light load efficiency of the voltage
regulator, resulting in platform power savings and extended battery life. PSI# can also be used to
simplify voltage regulator designs since it removes the need for integrated 100
in a low power (Deep Sleep or Deeper Sleep) state. This signal is asserted upon Deep Sleep entry
and deasserted upon exit. PSI# can be used to improve the light load efficiency of the voltage
regulator, resulting in platform power savings and extended battery life. PSI# can also be used to
simplify voltage regulator designs since it removes the need for integrated 100
µ
s timers required
to mask the PWRGOOD signal during Deeper Sleep transitions. It also reduces PWRGOOD
monitoring requirements in the Deeper Sleep state.
monitoring requirements in the Deeper Sleep state.