W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 43

• 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

up accordingly.
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.
If the source voltage was reduced by a voltage divider, the detected voltage value must be scaled
The voltage values can be read at Hardware Monitor Register Bank 0, Index 20h to 25h.
TEMPERATURE
7.3.3 Temperature Sensing
+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
Monitor 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
-28-
-
-
CPUTIN
SYSTIN
VREF
Publication Release Date: March 24, 2008
Pin 102
Pin 103
Pin 104
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
W83627UHG
W83627UHG
0FAh
032h
002h
001h
000h
1FFh
1FFh
1CEh
192h
9-BIT HEX
Revision 1.44