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10B.6.2 Register Configuration
Table 10B-9 shows the port 9 register configuration. Port 9 is an input-only port, and does not
have a data direction register or data register.
Table 10B-9 Port 9 Registers
Name
Port 9 register
Note: * Lower 16 bits of the address.
Port 9 Register (PORT9): The pin states are always read when a port 9 read is performed.
Bit
:
7
P97
Initial value :
—*
R/W
:
R
Note: * Determined by state of pins P97 to P90.
10B.6.3 Pin Functions
Port 9 pins function as A/D converter analog input pins (AN8 to AN15).
Abbreviation
PORT9
6
5
P96
P95
P94
—*
—*
—*
R
R
R/W
Initial Value
R
Undefined
4
3
2
P93
P92
—*
—*
R
R
R
Address*
H'FFB8
1
0
P91
P90
—*
—*
R
R
471
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