Port 8 - Toshiba TMP91C824F Data Book

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.
ADTRG
(for P83 only)
P8
Bit Symbol P87
(0018H)
Read/Write
After reset
(note): The input channel selection of A/D Converter and the permission of ADTRG input are set by A/D Converter
mode register ADMOD1.
Port 8 read
Conversion
Result
Register
AD Read
Figure 3.5.13 Port 8
Port 8 Register
7 6 5
P86 P85
Figure 3.5.14 Register for Port 8
91C824-66
A/D Channel
Converter Selector
4 3
P84 P83
R
Input mode
TMP91C824

Port 8

P80 to P87
(AN0 to AN7)
2 1 0
P82 P81 P80