W83627DHG Nuvoton Technology Corporation of America, W83627DHG Datasheet - Page 241

• Manufacturer Part Number: W83627DHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

** What’s the definition of former state at AC power failure?
1) The previous state is “ON”
2) The previous state is “OFF”
Logical Device A, CR E4h
To ensure that VCC does not fall faster than VSB in various ATX Power Supplies, the W83627DHG
adds the option of “user define mode” for the pre-defined state before AC power failure. BIOS can set
the pre-defined state to be “On” or “Off”. According to this setting, the system chooses the state after
the AC power recovery.
3VCC
SUSB#
6~5
3VCC
SUSB#
3VCC falls to 2.6V and SUSB# keeps at VIL 0.8V
3VCC falls to 2.6V and SUSB# keeps at VIH 2.0V
R / W
Power-loss control bits => (VBAT)
00: System always turns off when it returns from power-loss state.
01: System always turns on when it returns from power-loss state.
10: System turns off / on when it returns from power-loss state depending
11: User defines the state before the power loss.(The previous state is set
on the state before the power loss.
at CRE6[4])
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Publication Release Date: Aug, 22, 2007
W83627DHG
Version 1.4