M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 123
M30622MA-XXXFP
Manufacturer Part Number
M30622MA-XXXFP
Description
16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.M30622MA-XXXFP.pdf
(621 pages)
- Current page: 123 of 621
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Timers’ functions for three-phase motor control
108
Figure 1.18.6. Timing chart of operation (1)
Timer B2
Timer A4 output
U phase
output signal
U phase
Trigger signal for
timer Ai start
(timer B2 overflow
signal)
Control signal for
timer A4 reload
U phase
output signal
U phase
phase waveform. In this way, a waveform can be picked up from the applicable terminal in a manner in
which the "L" level of the U phase waveform doesn’t lap over that of the U phase waveform, which has the
opposite phase of the U phase waveform. The width of the “L” level too can be adjusted by varying the
values of timer B2, timer A4, and timer A4-1. In dealing with the V and W phases, and V and W phases,
the latter are of opposite phase of the former, have the corresponding timers work similarly to dealing with
the U and U phases to generate an intended waveform.
Signal wave
A carrier wave of triangular waveform
Carrier wave
___
Dead time
Note: Set to triangular wave modulation mode and to three-phase mode 1.
m
Timber B2 interrupt occurres
Rewriting timer A4 and timer A4-1.
Possible to set the number of overflows to generate an
interrupt by use of the interrupt occurrences frequency
set circuit
n
m
n
m
p
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
o
Mitsubishi microcomputers
M16C / 62 Group
The three-phase
shift register
shifts in
synchronization
with the falling
edge of the A4
output.
___
___
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