Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 11 MOTOR CONTROL FUNCTION
R01UH0042EJ0500 Rev.5.00 Page 599 of 1513
Aug 12, 2011
Figure 11-11. PWM Output Waveform from 0% to 100% and from 100% to 0% (With Dead Time)
0% output
M
0000H 0000H
0000H
0000H
0000H
0000H
M + 1M + 1
M + 1 M + 1
0000H
<1> <1> <2> <2> <1>
100%
output
100%
output
100%
output
16-bit
counter
TAB1CCR0
register
TAB1CCR1
register
TOAB1T1
pin output
TOAB1B1
pin output
CCR1
buffer register
Forced timing
of timer output
0% output
<1> The valley interrupt selects 100% ←→ 0% or 0% ←→ 100% output.
Output can be selected from 100% ←→ 0% or 0% ←→ 100% immediately after the timer has been
started.
<2> The crest interrupt selects 100% ←→ 0% output.
The crest interrupt selects 100% → 0% output by using the timer output forcible raising function and by a
match between the 16-bit counter value and the TAB1CCR0 register value.
(3) Output waveform in vicinity of 0% and 100% output
If an interrupt is generated because the value of the 16-bit counter matches the value of the compare register while
dead time is being counted, the dead-time counter is cleared and starts its count operation again.
The output waveform of dead-time control in the vicinity of 0% and 100% output is shown below.