Datasheet

Section 10 I/O Ports
Page 568 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
• P33/RxD1/SCL1
The pin function is switched as shown below according to the combination of bit ICE in
ICCRA_1 of I
2
C, bit RE in SCR_1 of SCI, and bit P33DDR.
ICE 0 1
RE 0 1 ⎯
P33DDR 0 1 ⎯ ⎯
Pin function P33 input P33 output RxD1 input SCL1 I/O
*
Note: NMOS open-drain output regardless of P33ODR.
• P32/RxD0/IrRxD/SDA1
The pin function is switched as shown below according to the combination of bit ICE in
ICCRA_1 of I
2
C, bit RE in SCR_0 of SCI, and bit P32DDR.
ICE 0 1
RE 0 1 ⎯
P32DDR 0 1 ⎯ ⎯
Pin function P32 input P32 output RxD0/IrRxD input SDA1 I/O
*
Note: NMOS open-drain output regardless of P33ODR.
• P31/TxD1
The pin function is switched as shown below according to the combination of bit TE in SCR_1
of SCI and bit P31DDR.
TE 0 1
P31DDR 0 1 ⎯
Pin function P31 input P31 output TxD1 output