Tcntu, Tcntv, And Tcntw Capture At Crest And/Or Trough In Complementary Pwm Mode - Renesas RX100 Series User Manual

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TCNTU, TCNTV, and TCNTW Capture at Crest and/or Trough in

Complementary PWM Mode

The MTU5 external pulse width measurement function allows to transfer the value in TCNTU, TCNTV, and TCNTW to

TGRU, TGRV, and TGRW at the crest, or trough, or crest and trough when MTU3 and MTU4 operate in complementary

PWM mode. The transfer timing is set in TIORU, TIORV, and TIORW. When the CMPCLR5U, CMPCLR5V, and

CMPCLR5W bits in the TCNTCMPCLR register are set to 1, TCNTU, TCNTV, and TCNTW become 0000h at the

transfer timing for TGRU, TGRV, and TGRW.

Figure 19.97 shows an operation example in which TCNTU is used as a free-running counter without being cleared, and

the value is captured in TGRU at the crest and trough in complementary PWM mode.

Upper arm signal (MTIOC3B)

Lower arm signal (MTIOC3D)

Inverter output monitor signal

Dead time delay signal (MTIC5U)

Up-count/down-count signal (udflg)

Figure 19.97

TCNTU Capture at Crest and Trough in Complementary PWM Operation

R01UH0822EJ0100 Rev.1.00

Jul 31, 2019

Dead time period

Delay between upper arm signal and

inverter output detection signal

19. Multi-Function Timer Pulse Unit 3 (MTU3c)

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