F81866A
R2
VIN = V+12V
×
R1 + R2
where V+12V is the analog input voltage, for example.
If we choose R1=20K, R2=2K, the exact input voltage for V+12v will be 1.09V, which is within
the tolerance. As for application circuit, it can be refer to the figure shown as follows.
150K
3Vcc
(directly connect to the chip)
VIN3.3
150K
VIN (< 2.04V) (directly connect to the chip)
Voltage Inputs
VIN (> 2.04V)
R
R2
8-bit ADC
with
8 mV LSB
VREF
R
10K, 1%
D+
D-
Typical BJT
Connection
R
Typical Thermister
Connection
2N3906
THM
10K, 25 C
Fig 6-1
PME# interrupt for voltage is shown as figure 6-2. Voltage exceeding or going below high limit
will cause an interrupt if the previous interrupt has been reset by writing “1” all the interrupt Status
Register.
*
*
(pulse mode)
*Interrupt Reset when Interrupt Status Registers are written 1
Voltage PME# Mode
Fig 6-2
6.4.1.2Temperature Sensor
The F81866A monitors two remote temperature sensors. These sensors can be measured from -60°C
to 127°C for thermal diode & thermistor. More detail please refers to the register description.
Remote-sensor transistor manufacturers
Manufacturer
Panasonic
Philips
Model Number
2SB0709 2N3906
PMBT3906
33
Jan, 2012
V0. 12P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
