Renesas H8S/2437 Hardware Manual page 197

• P33/D11/ExIRQ3
When the IRQ3S bit in PTCNT1 is set to 1, this pin can be used as the ExIRQ3 pin.
The pin function is switched as shown below according to the operating mode, the IRQ3S bit,
and the P33DDR bit.
Normal
Extended Mode
(ADMXE = 0)
P33DDR
Pin function D11 I/O pin
* When the IRQ3S bit in PTCNT1 is set to 1, this pin functions as the ExIRQ3 input pin.
Note:
• P32/D10/ExIRQ2
When the IRQ2S bit in PTCNT1 is set to 1, this pin can be used as the ExIRQ2 pin.
The pin function is switched as shown below according to the operating mode, the IRQ2S bit,
and the P32DDR bit.
Normal
Extended Mode
(ADMXE = 0)
P32DDR
Pin function D10 I/O pin
* When the IRQ2S bit in PTCNT1 is set to 1, this pin functions as the ExIRQ2 input pin.
Note:
Extended Mode (EXPE = 1)
Multiplex Extended Mode
(ADMXE = 1)

0
P33 input pin
Extended Mode (EXPE = 1)
Multiplex Extended Mode
(ADMXE = 1)

0
P32 input pin
Single-Chip Mode (EXPE = 0)
1
P33 output pin P33 input pin
ExIRQ3 input pin*
Single-Chip Mode (EXPE = 0)
1
P32 output pin P32 input pin
ExIRQ2 input pin*
Rev. 1.00, 09/03, page 159 of 704
0 1
P33 output pin
0 1
P32 output pin