W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 44

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.3.3
The data format for sensor SYSTIN is 8-bit, two's-complement, and the data format for sensors
CPUTIN is 9-bit, two's-complement. This is illustrated in the table below.
Eight-bit temperature data is read from Index 27h. For nine-bit temperature data, the 8 MSB are read
from Bank1 Index 50h,and the LSB is read from Bank1 Index 51h, bit 7.
There are two sources of temperature data: external thermistors or thermal diodes.
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 102). The configuration registers to select a themistor temperature sensor and the
measurement method are found at Bank 0, Index 59h, 5Dh, and 5Eh.
7.3.3.1
The voltage values can be read at Hardware Monitor Register Bank 0, Index 20h to 25h.
TEMPERATURE
+125°C
+25°C
+1°C
+0.5°C
+0°C
-0.5°C
-1°C
-25°C
-55°C
R
10K@25°C, beta=3435K
THM
Temperature Sensing
Monitor Temperature from Thermistor
Figure 7-5 Monitoring Temperature from Thermistor
8-BIT BINARY
0111,1101
0001,1001
0000,0001
0000,0000
1111,1111
1110,0111
1100,1001
8-BIT DIGITAL OUTPUT
Table 7-1 Temperature Data Format
-
-
R
10K, 1%
8-BIT HEX
7Dh
19h
01h
00h
FFh
E7h
C9h
-33-
-
-
CPUTIN
SYSTIN
VREF
Pin 102
Pin 103
Pin 104
9-BIT BINARY
Publication Release Date: May 25, 2007
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
W83627UHG
W83627UHG
0FAh
032h
002h
000h
1FFh
1FFh
1CEh
192h
001h
9-BIT HEX
Revision 1.0