Renesas RX100 Series User Manual page 518

RX13T Group
(21) Operation When Error Occurs in Complementary PWM Mode and Operation is Restarted in
Normal Mode
Figure 19.163 shows a case in which an error occurs in complementary PWM mode and operation is restarted in normal
mode after re-setting.
MTU module output
MTIOC3A
MTIOC3B
MTIOC3D
PORT output
Pxx
Pxx
Pxx
Figure 19.163 Error Occurrence in Complementary PWM Mode, Recovery in Normal Mode
(1) After a reset, the MTU3 output goes low and the ports enter high-impedance state.
(2) Select the complementary PWM output level and enable or disable cyclic output with registers TOCR1A and
TOCR2A.
(3) Set complementary PWM mode.
(4) Enable output in MTU3 and MTU4 with the TOERA register.
(5) Set MTU output using the MPC and port mode registers (PMR) corresponding to the I/O ports.
(6) Start count operation by setting the TSTRA register.
(7) The complementary PWM waveform is output on compare match occurrence.
(8) An error occurs.
(9) Allow non-active level output by setting the pins as general output ports using the port direction registers (PDR),
port output data registers (PODR), and port mode registers (PMR) of the I/O ports.
(10) Stop count operation by setting the TSTRA register. (MTU output becomes the initial complementary PWM output
value).
(11) Set normal mode (MTU output goes low).
(12) Initialize the pins with the TIOR register.
(13) Set MTU output using the MPC and port mode registers (PMR) corresponding to the I/O ports.
(14) Restart operation by setting the TSTRA register.
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
(1) (2) (3) (4) (5)
Reset TOCR TMDR TOER MPC
(CPWM) (1) (MTU)
Hi-Z
Hi-Z
Hi-Z
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
(6) (7) (8) (9) (10)
TSTR Match Error Port TSTR TMDR
(1) occurs output (0) (normal)
(11) (12) (13) (14)
TIOR TSTR
MPC
(1 init (MTU) (1)
0 out)
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