H8S-2633 Datasheet, PDF (458/1487 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer

Section 10A I/O Ports (H8S/2633, H8S/2632, H8S/2631, H8S/2633R)
Pin
P34/RxD1/
SDA0
P33/TxD1/
SCL1
P32/SCK0/
SDA1/IRQ4
Selection Method and Pin Functions
Switches as follows according to combinations of ICCR0 ICE bit of IIC0, SCR RE bit
of SCI1, and the P34DDR bit.
The SDA0 output format becomes NMOS open drain output, enabling direct bus
driving.
ICE
0
1
RE
0
1
—
P34DDR
Pin function
0
1
—
—
P34 input pin P34 output pin^* RxD1 input pin SDA0 I/O pin
Note: * Output type is NMOS push-pull. When P34ODR = 1, it becomes NMOS
open drain tray.
Switches as follows according to combinations of ICCR1 ICE bit of IIC1, SCR TE bit
of SCI1 and the P33DDR bit.
The SCL1 output format becomes NMOS open drain output, enabling direct bus
driving.
ICE
0
1
TE
0
1
—
P33DDR
Pin function
0
1
—
—
P33 input pin P33 output pin^* TxD1 output pin^* SCL1 I/O pin^*
Note: * When P33ODR = 1, it becomes NMOS open drain output.
Switches as follows according to combinations of ICCR1 ICE bit of IIC1, SMR C/A
bit of SCI0, SCR CKE0 and CKE1 bits, and the P32DDR bit.
If using as an SDA1 input pin, always set SMR C/A bit of SCI0 and SCR CKE0 and
CKE1 bits to 0 without fail.
The SDA1 output format becomes NMOS open drain output, enabling direct bus
driving.
ICE
0
1
CKE1
0
1
0
C/A
0
1
—
0
CKE0
0
1
—
—
0
P32DDR
0
1
—
—
—
—
Pin function
P32
P32
SCK0 SCK0 SCK0 SDA1
input pin output pin output pin^* output pin^* input pin I/O pin
IRQ4 input
Note: * When P32ODR = 1, it becomes NMOS open drain output.
Rev. 5.00 Mar 28, 2005 page 396 of 1422
REJ09B0234-0500