W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 58

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

If the current temperature rises higher than (Target Temperature 1 + Temperature Tolerance), the fan
speed rises one step again, and the target temperature shifts to (Target Temperature 1 + Temperature
Tolerance), or Target Temperature 2. This process repeats whenever the current temperature is
higher than (Target Temperature X ± Temperature Tolerance) or until the fan speed reaches its
maximum speed.
(4) If the current temperature falls below (Target Temperature － Temperature Tolerance), the fan
speed falls one step. The step is the value in the CPUFANOUT Output Value Select Register,
Bank0, Index 03h. In addition, the target temperature shifts to (Target Temperature －
Temperature Tolerance), creating a new target temperature named Target Temperature 1.This is
illustrated in the figure below.
Max. Fan Output
Max. Fan Output
(DC / PWM)
(DC / PWM)
Min. Fan Output
Min. Fan Output
Fan output
Fan output
Output Value
Output Value
Fan Initial
Fan Initial
Figure 7-15 S
Current Temp. > Target Temp. + Tol .
Current Temp. > Target Temp. + Tol .
MART
F
AN
TM
III Mechanism (Current Temp. > Target Temp. + Tol.)
Tar
Tar
Tar 1
Tar 1
-47-
Tar 2
Tar 2
Tolerance
Tolerance
Tar 3
Tar 3
Tar 4
Tar 4
Tar 5
Tar 5
Publication Release Date: May 25, 2007
Temperature
Temperature
W83627UHG
Step
Step
Revision 1.0