W83697HG-TR Nuvoton Technology Corporation of America, W83697HG-TR Datasheet - Page 27

• Manufacturer Part Number: W83697HG-TR
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83697HG-TR

• Lead Free Status / RoHS Status: Supplier Unconfirmed

The another negative voltage input V3 (approximate -5V) also can be evaluated by the similar method
and the serial resistors can be selected with R5=120K ohms and R6=56K ohms by the Winbond
recommended. The expression equation of V3 With -5V voltage is shown as follows.
Where the γ is set to 120K/(120K+56K). If the monitored ADC value in the N5VIN channel is 0.8635,
VREF=3.6V and the parameter γ is 0.6818 then the negative voltage of V3 can be evalated to be -5V.
6.3.3
The temperature data format is 8-bit two's-complement for sensor 2 and 9-bit two's-complement for
sensor 1. The 8-bit temperature data can be obtained by reading the CR[27h]. The 9-bit temperature
data can be obtained by reading the 8 MSBs from the Bank1 CR[50h] and the LSB from the Bank1
CR[51h] bit 7. The format of the temperature data is show in Table 1.
6.3.3.1. Monitor temperature from thermistor:
The W83697HF can connect three thermistors to measure three different envirment temperature. The
specification of thermistor should be considered to (1) β value is 3435K, (2) resistor value is 10K ohms
at 25°C. In the Figure 9.2, the themistor is connected by a serial resistor with 10K Ohms, then connect
to VREF (Pin 101).
6.3.3.2. Monitor temperature from Pentium II
The W83697HF can alternate the thermistor to Pentium II
transistor 2N3904 and the circuit connection is shown as Figure 9.3. The pin of Pentium II
connected to power supply ground (GND) and the pin D+ is connected to pin VTINx in the
W83697HF. The resistor R=30K ohms should be connected to VREF to supply the diode bias current
and the bypass capacitor C=3300pF should be added to filter the high frequency noise. The transistor
2N3904 should be connected to a form with a diode, that is, the Base (B) and Collector (C) in the
2N3904 should be tied togeter to act as a thermal diode.
TEMPERATURE
Temperature Measurement Machine
+125°C
+0.5°C
+25°C
-0.5°C
-25°C
-55°C
+1°C
+0°C
-1°C
8-BIT BINARY
8-BIT DIGITAL OUTPUT
0111,1101
0001,1001
0000,0001
0000,0000
1111,1111
1110,0111
1100,1001
-
-
V
3
=
N VIN VREF
5
8-BIT HEX
- 24 -
TM
Table 2.
1
thermal diode or bipolar transistor 2N3904
−
7Dh
C9h
FFh
E7h
19h
01h
00h
−
-
-
γ
TM
(Deschutes) thermal diode interface or
×
9-BIT BINARY
γ
0,1111,1010
0,0011,0010
0,0000,0010
0,0000,0001
0,0000,0000
1,1111,1111
1,1111,1110
1,1100,1110
1,1001,0010
9-BIT DIGITAL OUTPUT
W83697HF/ HG
9-BIT HEX
1CEh
0FAh
1FFh
1FFh
032h
002h
001h
000h
192h
TM
D- is