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•
P81/SDA0/RxD3
The pin function is switched as shown below according to the combination of the RE bit in
SCR of the SCI_3, the ICE bit in ICCRA of the IIC3_0, and the P81DDR bit. When this pin is
used as the P81 output pin, the output format is NMOS push-pull output. The output format for
SDA0 is NMOS open-drain output, and direct bus drive is possible.
ICE 0
1
RE 0
1
P81DDR 0
1
Pin function
P81 input pin
P81 output pin
RxD3 input pin
SDA0 I/O pin
•
P80/SCL0/TxD3
The pin function is switched as shown below according to the combination of the TE bit in
SCR of the SCI_3, the ICE bit in ICCRA of the IIC3_0, and the P80DDR bit. When this pin is
used as the TxD3 or P80 output pin, the output format is NMOS push-pull output. The output
format for SCL0 is NMOS open-drain output, and direct bus drive is possible.
ICE 0
1
TE 0
1
P80DDR 0
1
Pin function
P80 input pin
P80 output pin
TxD3 output pin
SCL0 I/O pin
Содержание H8S/2437
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