W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 47

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

External thermistors should have a β value of 3435K and a resistance of 10 KΩ at 25°C. As illustrated
in the schematic below, the thermistor is connected in series with a 10-KΩ resistor and then connects
to VREF (pin 101).
8.3.3.2. Monitor Temperature from Thermal Diode (Voltage Mode)
The thermal diode D- pin is connected to CPUD- (pin 105), and the D+ pin is connected to the
temperature sensor pin in the W83627DHG-P. A 15-KΩ resistor is connected to VREF to supply the
bias current for the diode, and the 2200-pF, bypass capacitor is added to filter high-frequency noise.
8.3.3.1.
Monitor Temperature From Thermistor
Figure 8-6 Monitoring Temperature from Thermal Diode (Voltage Mode)
10K@25 C, beta=3435K
Therminal
R
Diode
THM
Figure 8-5 Monitoring Temperature from Thermistor
D+
D-
10K, 1%
R
R=15K,1%
W83627DHG-P/W83627DHG-PT
AGND
C=2200pF
-37-
AUXTIN
CPUTIN
SYSTIN
VREF
Pin 102
Pin 103
Pin 104
Pin 101
Publication Release Date: July 09, 2009
VREF
(SYSTIN)
CPUTIN
(AUXTIN)
CPUD-(AGND)
W83627DHG-P
W83627DHG-P
Version 1.94