r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 395
r5f71374an80fpv
Manufacturer Part Number
r5f71374an80fpv
Description
32-bit Risc Microcomputer Superh?? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5F71374AN80FPV.pdf
(1154 pages)
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4. PWM Output Level Setting
5. Dead Time Setting
6. Dead Time Suppressing
In complementary PWM mode, the PWM pulse output level is set with bits OLSN and OLSP
in timer output control register 1 (TOCR1) or bits OLS1P to OLS3P and OLS1N to OLS3N in
timer output control register 2 (TOCR2).
The output level can be set for each of the three positive phases and three negative phases of 6-
phase output.
Complementary PWM mode should be cleared before setting or changing output levels.
In complementary PWM mode, PWM pulses are output with a non-overlapping relationship
between the positive and negative phases. This non-overlap time is called the dead time.
The non-overlap time is set in the timer dead time data register (TDDR). The value set in
TDDR is used as the TCNT_3 counter start value, and creates non-overlap between TCNT_3
and TCNT_4. Complementary PWM mode should be cleared before changing the contents of
TDDR.
Dead time generation is suppressed by clearing the TDER bit in the timer dead time enable
register (TDER) to 0. TDER can be cleared to 0 only when 0 is written to it after reading
TDER = 1.
TGRA_3 and TGRC_3 should be set to 1/2 PWM carrier cycle + 1 and the timer dead time
data register (TDDR) should be set to 1.
By the above settings, PWM waveforms without dead time can be obtained. Figure 10.41
shows an example of operation without dead time.
Section 10 Multi-Function Timer Pulse Unit 2 (MTU2)
Rev. 1.00 Sep. 21, 2007 Page 369 of 1124
REJ09B0402-0100
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