Datasheet

Section 8 I/O Ports
Rev. 2.00 Sep. 28, 2009 Page 202 of 870
REJ09B0429-0200
• P50/IRQ8/TxDF
The pin function is switched as shown below according to the combination of the
enable/disable setting of the SCIF and the P50DDR bit.
When the ISS8 bit in ISSR16 is cleared to 0 and the IRQ8E bit in IER16 of the interrupt
controller is set to 1, this pin can be used as the IRQ8 input pin. To use as the IRQ8 input pin,
clear the P50DDR bit to 0.
SCIF Disabled Enabled
P50DDR 0 1 X
P50 input pin Pin function
IRQ8 input pin
P50 output pin TxDF output pin
[Legend] X: Don't care.