W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 25

• Manufacturer Part Number: W83791G
• Description: IC MONITOR H/W 48-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83791G

• Function: Hardware Monitor
• Topology: ADC
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Type: I²C™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.6
The maximum input voltage of the analog pin is 4.096V because the 8-bit ADC has a 16mv LSB.
Actually, the application of the PC monitoring would most often be connected to power supply. The
CPU V-core voltage, +3.3V and battery voltage can directly connect to these analog inputs. The –
5V, –12V and +12V inputs should be reduced a factor with external resistors to meet the input range.
As Figure 7 shows.
1
A
0
8
Rd Data 4
Event Offset 0
Analog Inputs
8
Rd Data 1
Status
…
From zero to five bytes of Event Data [data dependent]
8
Rd Data 8
Sensor
Number
1
A
Negative Input
Positive Input
Typical Thermister Connection
8
Rd Data 5
Event Source
Type
V3
V4
1
A
0
1
A
0
V1
R1
8
Rd Data 9
Entity
8
Rd Data 2
Event Sensor Type 0
R7
1
A
0
Positive Inputs
R2
8
Rd Data 6
Event Severity 0
R THM
10K, 25 C
12VIN
Figure 7.
R5
10K, 1%
1
A
0
- 19 -
R
**The Connections of VTIN1 and VTIN2
5VSB
8
PEC
+1.8Vcore
+1.5VINR0
+3.3VIN
are same as VTIN3
VTIN3
VTIN2
VTIN1
8
Rd Data 10
Entity Instance
VINR1
VBAT
VREF
1
A
N5VIN
R8
1
A
Pin 38
Pin 39
Pin 40
N12VIN
Publication Release Date: April 14, 2006
8
Rd Data 3
Event Type
8
Rd Data 7
Sensor Device
R6
Pin 36
Pin 35
Pin 34
Pin 33
Pin 30
Pin 32
Pin 29
Pin 31
Pin 28
Pin 37
1
A
0
1
A
1
8-bit ADC
16mV LSB
with
…
W83791D/G
1
P
1
A
0
1
A
0
…
…
Revision 1.1