TMP91C824
91C824-66
3.5.6
Port 8 (P80 to P87)
Port 8 is an 8-bit input port and can also be used as the analog input pins for the internal A/D converter.
P83 can also be used as ADTRG pin for the A/D converter.
In
te
rn
al da
ta
b
u
s
AD Read
Conversion
Result
Register
A/D
Converter
Channel
Selector
Port 8 read
Port 8
P80 to P87
(AN0 to AN7)
ADTRG
(for P83 only)
Figure 3.5.13 Port 8
Port 8 Register
7
6
5
4
3
2
1
0
Bit Symbol
P87
P86
P85
P84
P83
P82
P81
P80
Read/Write
R
After reset
Input mode
(note): The input channel selection of A/D Converter and the permission of ADTRG input are set by A/D Converter
mode register ADMOD1.
P8
(0018H)
Figure 3.5.14 Register for Port 8