PC87307VUL National Semiconductor, PC87307VUL Datasheet - Page 57

• Manufacturer Part Number: PC87307VUL
• Description: PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
• Manufacturer: National Semiconductor

APC Inactive
V
ONCTL = Inactive
APC Active
Programmed Values
APC Active
Initial Values
BAT
V
Power Off
CCH
= Don’t Care
= High
V
ONCTL = Active
BAT
V
Power On
Real-Time Clock (RTC) and Advanced Power Control (APC) (Logical Device 2)
CCH
= Don’t Care
= High
V
CCH
V
V
CCH
BAT
V
(can occur if V
CCH
V
ONCTL = Inactive
BAT
Power Failure
FIGURE 4-9. APC State Diagram
V
V
A
BAT
CCH
MOAP
Software Off Command
V
Switch On Event
Switch Off Event or
ONCTL = Active
BAT
= High
= Low
V
Power On
CCH
DD
= Don’t Care
A
(Power Failure Bit = 0)
is not controlled by ONCTL)
= High
57
V
V
BAT
BAT
V
CCH
ONCTL = Inactive
Power Failure
ONCTL = Inactive
V
V
V
BAT
CCH
BAT
V
V
No Power
CCH
BAT
= High
= Low
= Low
= Low
A
V
ONCTL = Inactive
BAT
V
Power Off
CCH
V
= Don’t Care
CCH
= High
V
ONCTL = Inactive
V
BAT
BAT
V
Power Off
CCH
= Don’t Care
A
A
= High
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A