m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 193

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

M
R
R
e
E
3
. v
J
2
Figure 15.8 Triangular Wave Modulation Operation
0
C
1
9
NOTES:
3 .
8 /
Triangular waveform as a Carrier Wave
INV14 = 1
("H" active)
INV00, INV01: Bits in the INVC0 register
INV11, INV14: Bits in the INVC1 register
The above applies to INVC0 = 00XX11XX
B
INV14 = 0
("L" active)
Examples of PWM output change are
(a) When INV11=1 (three-phase mode 1)
Timer A1
Reload Control Signal
The three-phase control timer function is available by setting the INV02 bit in the INVC0 register to "1".
The timer B2 is used for carrier wave control and timers A4, A1, A2 for three-phase PWM output (U, U, V,
V, W, W) control. An exclusive dead time timer controls dead time. Figure 15.8 shows an example of the
triangular modulation waveform. Figure 15.9 shows an example of the sawtooth modulation waveform.
__
Timer A4
Start Trigger Signal
0
1
3
1. Internal signals. See Figure 15.1.
2. Applies only when the INV11 bit is set to "1" (three-phase mode).
0
- INV01=0 and ICTB2=2
- Default value of the timer: TA41=m, TA4=m
- Default value of the IDB0 and IDB1 registers
generated with every second timer B2 underflow) or
INV01=1, INV00=1and ICTB2=1
generated on the falling edge of the timer A1 reload control
signal)
The TA4 and TA41 registers are changed whenever the
timer B2 interrupt is generated.
They are changed to DU0=1, DUB0=0, DU1=1, DUB1=0
by the third timer B2 interrupt.
3
G
J
Reload Register
First time: TA41=n, TA4:=n.
Second time: TA41=p, TA4=p.
DU0=1, DUB0=0, DU1=0, DUB1=1
4
a
TB2S Bit in
TABSR Register
TA41 Register
o r
Timer A4
One-Shot Pulse
0 -
n
U-Phase Output
Signal
TA4 Register
___
U-Phase Output
Signal
3 .
u
1
p
, 1
3
Timer B2
1
U-Phase
U-Phase
(
(1)
U-Phase
U-Phase
2
M
(1)
0
3
0
Triangular Wave
2
6
C
Signal Wave
(2)
(1)
(2)
(2)
(1)
8 /
(1)
Page 170
, 3
16
M
(The timer B2 interrupt is
3
m
m
m
2
C
f o
16
8 /
4
3
(The timer B2 interrupt is
m
8
) T
2
8
and INVC1 = 010XXXX0
m
m
n
n
n
n
(b) When INV11=0 (three-phase mode 0)
n
2
(X varies depending on each system.)
- INV01=0, ICTB2=1
- Default value of the timer: TA4=m
- Default value of the IDB0 and IDB1 registers:
whenever the timer B2 underflows)
The TA4 register is changed whenever the timer B2
interrupt is generated.
They are changed to DU0=1, DUB0=0, DU1=1, DUB1=0 by
the sixth timer B2 interrupt.
First time: TA4=m. Second time: TA4=n.
Third time: TA4=n. Fourth time: TA=p.
Fifth time: TA4=p.
DU0=1, DUB0=0, DU1=0, DUB1=1
n
Dead time
n
15. Three-Phase Motor Control Timer Functions
p
Dead time
p
p
p
p
16
Rewrite the IDB0 and IDB1 registers
(The timer B2 interrupt is generated
p
q
q
q
q
Transfer a counter
value to the three-phase
shift register
q
q
r
r
r
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