NCT6627UD Nuvoton Technology Corporation of America, NCT6627UD Datasheet - Page 43

• Manufacturer Part Number: NCT6627UD
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of NCT6627UD

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Both of these solutions are illustrated in Figure 7-4.
The data format for voltage detection is an eight-bit value, and each unit represents an interval of 8 mV.
If the source voltage was reduced by a voltage divider, the detected voltage value must be scaled up accordingly.
The voltage values can be read at Hardware Monitor Register Bank 0, Index 20h to 25h.
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).
7.3.3.1.
7.3.2 Voltage Detection
7.3.3 Temperature Sensing
TEMPERATURE
+125°C
+25°C
+1°C
+0.5°C
+0°C
-0.5°C
-1°C
-25°C
-55°C
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
Detected Voltage = Reading * 0.008 V
Table 7-1 Temperature Data Format
-
-
8-BIT HEX
7Dh
19h
01h
00h
FFh
E7h
C9h
-
-
-34-
W83627UHG/NCT6627UD
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
Publication Release Date: October 26, 2010
9-BIT DIGITAL OUTPUT
0Fah
032h
002h
001h
000h
1FFh
1FFh
1Ceh
192h
9-BIT HEX
Revision 1.7