R01UH0823EJ0100 Rev.1.00 Page 635 of 1823
Jul 31, 2019
RX23W Group 23. Multi-Function Timer Pulse Unit 2 (MTU2a)
(27) Operation When Error Occurs in Reset-Synchronized PWM Mode and Operation is Restarted
in PWM Mode 1
Figure 23.142 shows a case in which an error occurs in reset-synchronized PWM mode and operation is restarted in
PWM mode 1 after re-setting.
Figure 23.142 Error Occurrence in Reset-Synchronized PWM Mode, Recovery in PWM Mode 1
(1) to (10) are the same as in Figure 23.141.
(11) Set PWM mode 1 (positive-phase MTU output goes low, and negative-phase output goes high).
(12) Initialize the pins with the TIOR register. (In PWM mode 1, a waveform is not output on the MTIOCnB
(MTIOCnD) pins. If a level is to be output, make the required general output port settings in the I/O port’s port
direction register (PDR) and port output data register (PODR).)
(13) Use the MPC and the port mode register (PMR) for the I/O port to set up MTU output.
(14) Restart operation by setting the TSTR register.
(1)
Reset
MTU module output
(2)
TOCR
(3)
TMDR
(RPWM)
(4)
TOER
(1)
(6)
TSTR
(1)
(7)
Match
(8)
Error
occurs
(9)
Port
output
(10)
TSTR
(0)
(11)
TMDR
(PWM1)
(12)
TIOR
(1 init
0 out)
(14)
TSTR
(1)
MTIOC3A
MTIOC3B
MTIOC3D
PORT output
Pxx
Pxx
Pxx
(5)
MPC
(MTU)
(13)
MPC
(MTU)
Not initialized (MTIOC3B)
Not initialized (MTIOC3D)
Hi-Z
Hi-Z
Hi-Z
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