Port 9; Port 9 Register (Port9) - Renesas H8S Series Hardware Manual

Section 9 I/O Ports
9.3

Port 9

Port 9 is a 4-bit input-only port. Port 9 pins also function as A/D converter analog input pins. Port
9 has the following registers. For details on register addresses, refer to appendix A, On-Chip I/O
Register.

• Port 9 register (PORT9)

9.3.1 Port 9 Register (PORT9)
PORT9 is an 8-bit read-only register that shows port 9 pin states.
PORT9 cannot be modified.
Bit Bit Name
7 —
6 —
5 —
4 —
3 P93
2 P92
1 P91
0 P90
Note: * Determined by the states of pins P93 to P90.
Rev. 6.00 Mar 15, 2006 page 136 of 570
REJ09B0211-0600
Initial Value R/W
Undefined R
Undefined R
Undefined R
Undefined R
Undefined *
R
Undefined *
R
Undefined *
R
Undefined *
R
Description
The pin states are always read when a port 9 read
is performed.