W83782G Nuvoton Technology Corporation of America, W83782G Datasheet - Page 14

• Manufacturer Part Number: W83782G
• Description: IC MONITOR H/W 48-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83782G

• Output Type: I²C™, ISA
• Function: Hardware Monitor
• Topology: ADC, Fan Speed Counter, Register Bank
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Alarm: No
• 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
• Temperature Sensor Function: Temp Sensor
• Operating Temperature (min): -40C
• Operating Temperature (max): 120C
• Operating Supply Voltage (typ): 5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(f)
6.3 Analog Inputs
The maximum input voltage of the analog pin is 4.096V because the 8-bit ADC has a 16mv LSB.
Really, the application of the PC monitoring would most often be connected to power suppliers. The
CPU V-core voltage, +3.3V and battery voltage can directly connect to these analog inputs. The 5VSB
and +12V inputs should be reduced a factor with external resistors so as to obtain the input range. As
Figure 11 shows.
Temperature 2/3 T
SCL (Cont...)
SDA (Cont...)
SCL
SDA
Start By
Master
Negative Input
Positive Input
0
1
Typical Thermister Connection
0
D7
0
D6
Serial Bus Address Byte
OS
MSB Data Byte
V3
V4
0
V1
Frame 3
D5
and T
Figure 10. Configuration Register Write
Frame 1
1
D4
R1
HYST
A2
D3
R7
write
A1
D2
Positive Inputs
A0
R2
D1
R/W
R THM
10K, 25 C
7
7
D0
12VIN
V2
Figure 11.
R5
10K, 1%
Ack
782D
by
R
8
- 11 -
Ack
781D
by
**The Connections of VTIN1 and VTIN2
8
0
0
+2.5VINA
+2.5VINB
VDD(+5V)
+3.3VIN
0
D7
R3
VBAT
VREF
VTIN3
VTIN2
VTIN1
are same as VTIN3
0
D6
0
N5VIN
R8
D5
LSB Data Byte
R4
Pointer Byte
Pin 38
Pin 39
Pin 40
Publication Release Date: April 14, 2005
Frame 2
Frame 4
N12VIN
0
W83782D/W83782G
D4
5VSB
4
0
R6
D3
Pin 36
Pin 35
Pin 34
Pin 33
Pin 30
Pin 32
Pin 29
0
Pin 31
Pin 28
Pin 37
D2
D1
D1
8-bit ADC
16mV LSB
D0
with
7
7
D0
Ack
782D
by
8
Ack
782D
by
8
Revision 2.0
Master
Stop
by