NCT6627UD Nuvoton Technology Corporation of America, NCT6627UD Datasheet - Page 219

• Manufacturer Part Number: NCT6627UD
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of NCT6627UD

• Lead Free Status / Rohs Status: Supplier Unconfirmed

** What’s the definition of last state when AC power failure?
Last state is “ON”
Last state is “OFF”
5VCC is falling to 3.75V and SUSB# keeps VIL 0.8V
Logical Device A, CR E6h
Logical Device A, CR E4h
5VCC
SUSB#
5VCC
To prevent that VCC goes down faster than VSB in various ATX Power Supplies. W83627UHG add the “user
define mode” option for AC power loss pre-state. BIOS can set the pre-state that is “On” or “Off” state, because
the status of AC power resume depends on it.
SUSB#
5VCC is falling to 3.75V and SUSB# keeps VIH 2.0V
6~5
4
R / W
R / W
Power loss Last State Flag. (VBAT)
0: ON
1: OFF
Power loss control bits => ( VBAT )
00: System always turns off when come back from power loss state.
01: System always turns on when come back from power loss state.
10: System turns off / on when come back from power loss state depend
11: User define the state before power loss.(The last state set at CRE6[4])
on the state before power loss.
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W83627UHG/NCT6627UD
Publication Release Date: October 26, 2010
Revision 1.7