Pin Functions - Renesas H8S Series Hardware Manual

Section 9 I/O Ports
9.6.6

Pin Functions

Port C pins also function as SCI_1 and SCI_0 I/O and interrupt input. The correspondence
between the register specification and the pin functions is shown below.
PC7: This pin function is switched as shown below.
PC7DDR
Pin function
PC6: This pin function is switched as shown below.
PC6DDR
Pin function
PC5/SCK1/IRQ5: The pin function is switched as shown below according to the operating mode,
bit C/A in the SCI1's SMR, bits CKE0 and CKE1 in SCR, and bit PC5DDR.
CKE1
C/A
CKE0
PC5DDR
Pin function PC5 input
IRQ5 input
PC4/RxD1: The pin function is switched as shown below according to the operating mode, bit RE
in the SCI1's SCR, and bit PC4DDR.
RE
PC4DDR
Pin function
Rev. 6.00 Mar 15, 2006 page 150 of 570
REJ09B0211-0600
0
0
0 1
PC5 output
0
0
PC4 input
0
PC7 input
0
PC6 input
0
1
—
SCK1 output
1
PC4 output
1
PC7 output
1
PC6 output
1
—
—
SCK1 output SCK1 input
1
—
RxD1 input
1
—
—
—