h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 230

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 I/O Ports
• P32/SCK0/IRQ4
The pin function is switched as shown below according to the combination of the C/A bit in SMR
of SCI_0, the CKE0 and CKE1 bits in SCR, and the P32DDR bit.
Note:
• P31/RxD0
The pin function is switched as shown below according to the combination of the RE bit in SCR
of SCI_0 and P31DDR bit.
Note:
• P30/TxD0
The pin function is switched as shown below according to the combination of the TE bit in SCR of
SCI_0 and P30DDR bit.
Note:
Rev. 2.00 Dec. 05, 2005 Page 192 of 724
REJ09B0200-0200
CKE1
C/A
CKE0
P32DDR
Pin function
RE
P31DDR
Pin function
TE
P30DDR
Pin function
*
*
*
When P32ODR = 1, it becomes NMOS open drain output.
When P31ODR = 1, it becomes NMOS open drain output.
When P30ODR = 1, it becomes NMOS open drain output.
input pin
P32
0
P31 input pin
P30 input pin
0
0
0
output pin
P32
0
1
0
0
0
P31 output pin*
P30 output pin*
IRQ4 input
SCK0 output
pin*

1
1
1
SCK0 output
pin*


1
TxD0 output pin
RxD0 input pin


1
1
SCK0 input
pin



1