Table of Contents
Advertisement
• 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
RE
P81DDR
Pin function
P81 input 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
TE
P80DDR
Pin function
P80 input pin
Rev. 1.00, 09/03, page 188 of 704
0
0
0
1
P81 output pin
0
0
0
1
P80 output pin
1
RxD3 input pin
1
TxD3 output pin
1
SDA0 I/O pin
1
SCL0 I/O pin
Advertisement
Table of Contents
