w83627hg Winbond Electronics Corp America, w83627hg Datasheet - Page 38
w83627hg
Manufacturer Part Number
w83627hg
Description
Winbond Lpc I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83627HG.pdf
(131 pages)
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7.3.3
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.
7.3.3.1
The W83627HF can connect three thermistors to measure three different envirment temperature. The
specification of thermistor should be considered to °1± E value is 3435K, °2± resistor value is 10K
ohms at 25qC. In the Figure 8.2, the themistor is connected by a serial resistor with 10K Ohms, then
connect to VREF °Pin 101±.
7.3.3.2
The W83627HF can alternate the thermistor to Pentium II
transistor 2N3904 and the circuit connection is shown as Figure 8.3. The pin of Pentium II
nected to power supply ground °GND± and the pin D+ is connected to pin VTINx in the W83627HF.
The resistor R=30K ohms should be connected to VREF to supply the diode bias current and the by-
pass 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
Monitor temperature from thermistor
Monitor temperature from Pentium II
+25°C
-0.5°C
-25°C
-55°C
+1°C
+0°C
-1°C
8-BIT BINARY
0111,1101
0001,1001
0000,0001
0000,0000
1111,1111
1110,0111
1100,1001
8-BIT DIGITAL OUTPUT
-
-
8-BIT HEX
- 34 -
TM
Table 1.
7Dh
FFh
E7h
C9h
thermal diode or bipolar transistor 2N3904
19h
01h
00h
-
-
TM
°Deschutes± thermal diode interface or
W83627HF/ F/ HG/ G
9-BIT BINARY
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
9-BIT HEX
TM
1CEh
0FAh
1FFh
1FFh
032h
002h
001h
000h
192h
D- is con-
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