Datasheet

Section 10 I/O Ports
Rev. 6.00 Mar. 18, 2010 Page 319 of 982
REJ09B0054-0600
• P35/SCK1/SCL0/IRQ 5
The pin functions are switched as shown below according to the combination of the ICE bit
*
3
in ICCR_0 of IIC_0, the C/A bit in SMR_1 of SCI_1, CKE0 and CKE1 bits in SCR_1, and the
P35DDR bit. To use this port as SCL0 I/O pin, clear the C/A bit, CKE1 bit, and CKE0 bit to 0.
The SCL0 functions as NMOS open drain output and the pin can drive bus directly. When this
pin is specified as the P35 output pin or SCK1 output pin, it functions as NMOS push/pull
output.
*
4
ICE
*
3
0 1
CKE1 0 1 0
C/A 0 1 ⎯ 0
CKE0 0 1 ⎯ ⎯ 0
P35DDR 0 1 ⎯ ⎯ ⎯ ⎯
Pin functions P35 input
pin
P35 output
pin
*
1
SCK1 output
pin
*
1
SCK1 output
pin
*
1
SCK1 input
pin
SCL0 I/O
pin
*
3
IRQ5 Input pin
*
2
Notes: 1. When the P35ODR is set to 1, it functions as NMOS open drain output. When the
P35ODR is cleared to 0, it functions as NMOS push/pull output.
*
4
2. When this pin is used as an external interrupt pin, do not specify other functions.
3. Not available in the H8S/2237 Group and H8S/2227 Group.
4. It functions as CMOS output in the H8S/2237 Group and H8S/2227 Group.
• P34/RxD1/SDA0
The pin functions are switched as shown below according to the combination of the ICE bit
*
2
in ICCR_0 of IIC_0, the RE bit in SCR_1 of SCI_1, and the P34DDR bit. When this pin is
specified as P34 output pin, it functions as NMOS push-pull output.
*
3
The SDA0 also
functions as NMOS open drain outputs and can drive bus directly.
ICE
*
2
0 1
RE 0 1 ⎯
P34DDR 0 1 ⎯ ⎯
Pin functions P34 input pin P34 output pin
*
1
RxD1 input pin SDA0 I/O pin
*
2
Notes: 1. When P34ODR is set to 1, it functions as NMOS open drain output. When the P34ODR
is cleared to 0, it functions as NMOS push/pull output.
*
3
2. Not available in theH8S/2237 Group and H8S/2227 Group.
3. It functions as CMOS output in the H8S/2237 Group and H8S/2227 Group.