Port H - Renesas H8S/2100 Series Hardware Manual

Section 8 I/O Ports
8.2.17

Port H

(1) PH5, PH4, PH3
The pin function is switched as shown below according to the PHnDDR bit.
PHnDDR
Pin function
(2) PH2/CIRI
The pin function is switched as shown below according to the combination of the CIRE bit in
CCR1 of CIR and the PH2DDR bit.
CIRE
PH2DDR
Pin function
(3) PH1/ExIRQ7
The pin function is switched as shown below according to the PH1DDR bit. When the ISS7 bit in
ISSR is set to 1 and the IRQ7E bit in IER of the interrupt controller is set to 1, this pin can be used
as the ExIRQ7 input pin.
PH1DDR
Pin function
(4) PH0/ExIRQ6
The pin function is switched as shown below according to the PH0DDR bit. When the EIVS bit in
SYSCR3 is set to 1 and the IRQ6E bit in IER of the interrupt controller is set to 1, this pin can be
used as the ExIRQ6 input pin.
PH0DDR
Pin function
Rev. 1.00 May 09, 2008 Page 192 of 954
REJ09B0462-0100
PHn input pin
0
0
PH2 input pin
PH1 input pin
PH0 input pin
0
1
PH2 output pin
0
ExIRQ7 input pin
0
ExIRQ6 input pin
1
PHn output pin
(n = 5 to 3)
1

CIRI input pin
1
PH1 output pin
1
PH0 output pin