R01UH0822EJ0100 Rev.1.00
Page 551 of 1041
Jul 31, 2019
RX13T Group
20. Port Output Enable 3 (POE3C)
20.3.1
Input-Level Detection Operation
If the input conditions set by ICSR1 to ICSR4 occur on the POE0#, POE8#, and POE10# pins, the outputs of the MTU
complementary PWM output pins (MTU3 and MTU4 ), and MTU0 pins are in the high-impedance state. Note however,
that these outputs are still in the high-impedance state even when the MTU functions are not selected for the pins.
(1) Falling Edge Detection
When a change from a high to low level is input to the POE0#, POE8#, and POE10# pins, the outputs of the pins
multiplexed with MTU complementary PWM output pins, and MTU0 pins are in the high-impedance state.
The falling edge is detected after the level is sampled with PCLK. Input a low level for at least one PCLK clock to the
POE0#, POE8#, and POE10# pins.
shows a sample timing after the level changes in input to the POE0#, POE8#, and POE10# pins until the
respective pins become high-impedance.
Figure 20.4
Operation when A Falling Edge Detection is Selected
PCLK
POE# pin input
MTIOC3B pin
PCLK rising edge
Falling edge detection
High-impedance
*1
Note 1. Other pins also become high-impedance at the same timing.