W83L784R_05 Datasheet, PDF (14/52 Pages) Winbond – Monitoring IC

W83L784R/ W83L784G
(f) Temperature T_OS and T_HYST write
0
SCL
780
4
78
SDA
1 0 0 1 A2 A1 A0 R/W
0
0
0
0
0
0
D1 D0
Start By
Master
Frame 1
Ack
Ack
by
Frame 2
by
Serial Bus Address Byte
784R
Pointer Byte
784R
SCL (Cont...)
SDA (Cont...)
0
780
78
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Frame 3
MSB Data Byte
Ack
Ack
by
Frame 4
by
784R
784R
LSB Data Byte
Stop
by
Master
Figure 9. Configuration Register Write
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 and +3.3V voltage can directly connected to these analog inputs. The 5VSB and
battery inputs should be reduced a factor with external resistors so as to obtain the input range. As
Figure 10 shows.
Positive Inputs
VIN1(VCORE)
VIN2(+3.3V)
VCC
Pin 16
Pin 14
Pin 20
10V(Battery DC)
R1 _{VIN3(VBAT) Pin 13}
232K, 1%
R2
99K, 1%
8-bit ADC
with
16mV LSB
Typical Thermister
Connection
**The connections of CPUT2
is same as CPUT1
R
10K, 1%
CPUT
VREF
RTHM
10K, 25 C
Pin 17
Pin 19
Figure. 10.
Publication Release Date: Jan. 2005
-9-
Revision 1.1