w83l786nr Winbond Electronics Corp America, w83l786nr Datasheet - Page 16

• Manufacturer Part Number: w83l786nr
• Description: W83l786nr W83l786ng Winbond H/w Monitoring Ic
• Manufacturer: Winbond Electronics Corp America

7.5
The temperature data format is 8-bit unsigned for thermal sensor. The 8-bit temperature data can be
obtained by reading the VR [25h] or VR [26h]. The format of the temperature data is shown in Table 1.
7.5.1
The W83L786NR/NG can connect one thermistor and one thermal diode sensor to measure two
different environment temperatures. The specification of thermistor should be considered to (1) β
value is 3435 K, and (2) resistor value is 10K ohms at 25°C. In the Figure 3, the themistor is
connected by a serial resistor with 10K Ohms, and then connect to V
7.5.2
The W83L786NR/NG can alternate the thermistor to thermal diode interface and the circuit connection
is shown as Figure 5. The pin of D- is connected to power supply ground (GND) and the pin D+ is
connected to pin D+ or VTIN1 in the W83L786NR/NG. The bypass capacitor C=2200pF should be
added to filter the high frequency noise.
TEMPERATURE
Temperature Measurement Machine
Monitor Temperature from Thermistor
Monitor Temperature from Thermal Diode
+160°C
+25°C
+2°C
+1°C
+0°C
T e m p e r a tu r e s e n s o r
B ip o la r T r a n s is to r
C P U o r G P U
T h e r m in a l
D io d e
2 N 3 9 0 4
8-BIT BINARY
1010,0000
0001,1001
0000,0010
0000,0001
0000,0000
D +
D -
Figure 5
Table 1
- 11 -
8-BIT DIGITAL OUTPUT
W83L786NR/ W83L786NG
C = 2 2 0 0 p F
C = 2 2 0 0 p F
Publication Release Date: March 31, 2006
V T I N 1
REF
D +
D -
8-BIT HEX
W 8 3 L 7 8 6 N R
(pin 15).
A0h
19h
02h
01h
00h
Revision 0.9