CHAPTER 9 TIMER/COUNTER FUNCTION (REAL-TIME PULSE UNIT)
275
User’s Manual U14492EJ3V0UD
(c) When BFCMnx = 0000H is set in software processing started by INTCM0n3
Figure 9-25. Operation Timing in PWM Mode 1 (Asymmetric Triangular Wave, BFCMnx = 0000H) (1)
t
t
t
CM0n3
CM0n3
a
b
CM0nx
match
CM0nx
match
INTTM0n
TM0n
count value
Positive phase
(TO0n0, TO0n2, TO0n4)
Negative phase
(TO0n1, TO0n3, TO0n5)
BFCMnx
DTMnx
F/F
Interrupt request
CM0nx
0000H
b
0000H
0000H
0000H
a
b
a
0000H
0000H
0000H
INTCM0n3
INTCM0n3
INTTM0n
Remarks 1.
n = 0, 1
2.
x = 0 to 2
3.
t: Dead time = (DTRRn + 1)/f
CLK
(f
CLK
: Base clock)
4.
The above figure shows an active high case.
Since TM0n = CM0nx = 0000H match is detected during up counting by TM0n, the F/F is just set and
does not get reset. Moreover, the F/F gets set upon match detection in the cycle when 0000H is
transferred to CM0nx by INTTM0n interrupt.
Figure 9-26 shows the change timing from the 100% duty state.
Содержание V850E/IA1 mPD703116
Страница 2: ...2 User s Manual U14492EJ3V0UD MEMO...