Renesas RX100 Series User Manual page 507

RX13T Group
(7) Operation When Error Occurs in PWM Mode 1 and Operation is Restarted in Normal Mode
Figure 19.149 shows a case in which an error occurs in PWM mode 1 and operation is restarted in normal mode after
re-setting.
MTU module output
MTIOCnA
MTIOCnB
PORT output
Pxx
Pxx
Figure 19.149 Error Occurrence in PWM Mode 1, Recovery in Normal Mode
(1) After a reset, the MTU output goes low and the ports enter high-impedance state.
(2) Set PWM mode 1.
(3) For MTU3 and MTU4, enable output with the TOERA register before initializing the pins with the TIOR register.
(4) Initialize the pins with the TIOR register. (In the example, the initial output is a high level, and a low level is output
on compare match occurrence. In PWM mode 1, the MTIOCnB side is not initialized.)
(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) Output goes low 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.
(11) Set normal mode.
(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 TMDR TOER TIOR
MPC
(PWM1) (1) (1 init (MTU)
0 out)
Not initialized (MTIOCnB)
Hi-Z
Hi-Z
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
(6) (7) (8) (9) (10)
TSTR Match Error Port TSTR
(1) occurs output (0) (normal)
(11) (12) (13) (14)
TMDR TIOR MPC TSTR
(MTU)
(1 init (1)
0 out)
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