Port 4; Port 4 Register (Port4) - Renesas H8S Series Hardware Manual

9.2

Port 4

Port 4 is an 8-bit input-only port. Port 4 pins also function as A/D converter analog input pins. For
details on register addresses, refer to appendix A, On-Chip I/O Register.

• Port 4 register (PORT4)

9.2.1 Port 4 Register (PORT4)
PORT4 is an 8-bit read-only register that shows port 4 pin states.
PORT4 cannot be modified.
Bit Bit Name
7 P47
6 P46
5 P45
4 P44
3 P43
2 P42
1 P41
0 P40
Note: * Determined by the states of pins P47 to P40.
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 4 read
is performed.
Rev. 6.00 Mar 15, 2006 page 135 of 570
Section 9 I/O Ports
REJ09B0211-0600