W83L786NR Datasheet, PDF (14/50 Pages) Winbond – H/W Monitoring IC

W83L786NR/ W83L786NG
(b) Serial bus read from a register
0
SCL
SDA
0
Start By
Master
1
0
1
1
0
Frame 1
Serial Bus Address Byte
0
7
8
0
7
8
1
R/W
D7 D6 D5 D4 D3 D2 D1 D0
Ack
Ack
by
Frame 2
by
792D
Internal Index Register Byte
792D
0
7
8
0
7
8
0
Repeat
start
by
Master
1
0
1
1
0
Frame 3
Serial Bus Address Byte
1 R/W
Ack
by
792D
0
D7 D6 D5 D4 D3 D2 D1 D0
Frame 4
Data Byte
Nak
by
Master
Stop by
Master
Figure 2. Serial Bus Read from Internal Address Register
7.4 Analog Inputs
The maximum input voltage of the analog pin is 2.048V because the 8-bit ADC has the 8mV LSB.
Actually, the application of the voltage monitoring would most often be connected to power suppliers.
The input voltage lower than 2.048V could directly connect to the analog inputs. The inputs voltage
higher than 2.048V should be reduced by external resistors so as to meet the input range. This is
shown in Figure 3.
Positive Inputs
V C O R E (M ax2 .048 V )
Pin 13
+2.5V
R1 _{VRAM(Max2.048V)}
100K, 1%
Pin 14
R2
100K, 1%
Typical Thermister
Connection
**The connections of D+
is same as VTIN1
10K, 1%
VREF
VTIN1
R _THM
10K, 25 C
Pin 15
Pin 10
Figure 3
8-bit ADC
with
8mV LSB
Publication Release Date: March 31, 2006
-9-
Revision 0.9