THREE-PHASE WAVEFORM MODE
10.4 Three-phase mode 1
❈
❈❈
Carrier wave
Timer A3 interrupt request
Timer A3 underflow signal
❈2
❈1
❈1
❈1
❈1
❈1
❈1
❈1
❈1
Contents of timer A0/A1/A2
register
n
1
2
n
3
4
n
5
6
n
7
8
n
9
Contents of timer A01/A11/A21
n
n
n
n
n10
register
One-shot pulse output of
timer A0/A1/A2
1/f
❈ n
i
1/f
❈ n
i
1/f
❈ n
i
1/f
❈ n5
i
❈2
1/f
❈ n
i
1/f
i
❈ n
3
1/fi ❈ n6
7
2
4
1
Rever-
sed
Rever-
sed
Rever-
sed
Rever-
sed
Rever-
sed
Rever-
sed
Transferred
Rever-
sed
Contents of three-phase
output polarity set buffer
Transferred
Rever-
Transferred
Rever-
Transferred
Trans-
ferred
Trans-
ferred
Trans-
ferred
Contents of output polarity
set toggle flip-flop
Rever-
sed
Rever-
sed
Rever-
sed
Rever-
sed
Rever-
sed
sed
❈2
sed
Reversed signal of pulse
output of dead-time timer
❈2
Positive waveform output
Negative waveform output
❈1 : Written by software
❈2 : This is an internal signal, which cannot be read from the external.
fi : Count source of timer A0/A1/A2
This applies under the following conditions:
• Timer A3 interrupt request: every second time
• Timer A3 interrupt validity output: even-numbered underflow in time A3
Fig. 10.4.4 Triangular wave modulation output example (three-phase mode 1)
7906 Group User’s Manual Rev.2.0
10-31
RENESAS [ RENESAS TECHNOLOGY CORP ]
