Datasheet

Section 8 I/O Ports
Rev. 3.00 Sep. 28, 2009 Page 146 of 710
REJ09B0384-0300
• P52/IRQ10/TxD1
The pin function is switched as shown below according to the combination of the TE bit in
SCR of SCI_1, the SMIF bit in SCMR, and the P52DDR bit.
When the ISS10 bit in ISSR16 is cleared to 0 and the IRQ10E bit in IER16 of the interrupt
controller is set to 1, this pin can be used as the IRQ10 input pin. To use this pin as the IRQ10
input pin, clear the P52DDR bit to 0.
TE x 0 1
SMIF 0 1
P52DDR 0 1 x 0 1
P52 input pin P52 input pin Pin function
IRQ10 input pin
P52 output pin TxD1 output pin
IRQ10 input pin
P52 output pin
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x: Don't care