254
9.7.2
Register Configuration
Table 9-11 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 9-11 Port 9 Registers
Name
Abbreviation
R/W
Initial Value
Address
*
Port 9 register
PORT9
R
Undefined
H'FFB8
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
6
5
4
3
2
1
0
P97
P96
P95P94
P93
P92
P91
P90
Initial value :
—
*
—
*
—
*
—
*
—
*
—
*
—
*
—
*
R/W
:
R
R
R
R
R
R
R
R
Note:
*
Determined by state of pins P97 to P90.
9.7.3
Pin Functions
Port 9 pins also function as A/D converter analog input pins (AN8 to AN11).
Summary of Contents for H8S/2645
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