W83627THF_06 Datasheet, PDF (30/142 Pages) Winbond – Winbond LPC I/O

W83627THF/W83627THG
5.3 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 Vcore voltage, +3.3V, battery(pin 74), AVCC(pin 114) and 5VSB voltage can directly connected
to these analog inputs. The +12V voltage inputs should be reduced a factor with external resistors so
as to obtain the input range. As Figure 3.2 shows.
V1
Positive Voltage Input
V2
Negative Voltage Input
Power Inputs
CPUVCORE
R1
R2
R3
R5
AVCC
VBAT
5VSB
VIN1(+3.3V)
VIN0
VIN2
Pin 114
Pin 74
Pin 61
Pin 98
Pin 100
Pin 99
8-bit ADC
with
16mV LSB
Pin 97
RTHM
10K@25 C, beta=3435K
R
10K, 1%
R
30K, 1%
CPUD+
CPUD-
CAP,3300p
R4
VREF
AUXTIN
CPUTIN
SYSTIN
Pin 102
Pin 103
Pin 104
Pin 101
Figure. 5-2
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Publication Release Date: September 26, 2006
Revision 1.2