W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 48

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

Specifications of W83627DHG-PT

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

The W83627DHG-P can also sense the diode temperature through Current Mode and the circuit is
shown in the following figure.
The pin of processor D- is connected to CPUD- (pin 105) and the pin D+ is connected to temperature
sensor pin in the W83627DHG-P. A bypass capacitor C=2200pF should be added to filter the high
frequency noise.
8.4
The W83627DHG-P is equipped with a built-in voltage and temperature sensor which uses the Simple
Serial Transport (SST) interface. The sensor provides a means for an analog signal to travel over a
digital bus enabling remote voltage and temperature sensing in areas previously not monitored in the
PC.
SST is a self-clocked, one-wire bus for data transfer. The bus requires no additional control lines. In
addition, SST also includes variable data transfer rate established with every message. Therefore, it is
comparatively flexible. The W83627DHG-P has a programmable SST address defined at Logical
Device C CR [F1h]. The default address is 0x48h which is within the range of 0x48h-0x4ah defined in
the SST specification.
8.4.1
The W83627DHG-P supports SST commands as shown in the following table:
8.3.3.3.
GetIntTemp()
GetExtTemp()
GetAllTemps()
GetVolt12V()
GetVolt5V()
SST Command Summary
Command Summary
Monitor Temperature from Thermal Diode (Current Mode)
Figure 8-7 Monitoring Temperature from Thermal Diode (Current Mode)
COMMAND
Thermal
Diode
Table 8-2 SST Command Summary
D+
D-
W83627DHG-P/W83627DHG-PT
-38-
AGND
C=2200pF
Returns the 2-byte temperature data values for
pin SYSTIN (Pin 104)
Returns the 2-byte temperature data values for
pin CPUTIN (Pin 103)
Returns the 4-byte temperature data values for
both SYSTIN and CPUTIN
Returns the 2-byte voltage data values for pin
VIN0 (Pin 99). This pin should be connected to
+12V power through scaling resistors Refer to
8.4.2.2 Voltage Data
Returns the 2-byte voltage data values for pin
VIN1 (Pin 98). This pin should be connected to
+5V power through scaling resistors Refer to
(SYSTIN)
(AUXTIN)
CPUD-(AGND)
CPUTIN
W83627DHG-P
Publication Release Date: July 09, 2009
DESCRIPTION
Format.
Version 1.94