m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 109

• Manufacturer Part Number: m30262f8gp
• Description: Renesas 16-bit Cmos Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

Three-Phase Motor Control Timer Function
Figure 1.14.8. Timing chart of operation (1)
(Note 1)
(Note 2)
INV13(Triangular wave
modulation detect flag)
Timer B2
Trigger signal for
timer Ai start
(timer B2 overflow
signal)
Control signal for
timer A4 reload
U phase
output signal
Timer A4 output
U phase
output signal
waveform, which has the opposite phase of the U phase waveform, are the same as in generating a U
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.
(Note 3)
Signal wave
U phase
U phase
U phase
U phase
Carrier wave
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
Dead time
Dead time
Note 1: When INV14="0" (output wave Low active)
Note 2: When INV14="1" (output wave High active)
Note 3: 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
Renesas Technology Corp.
n
m
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
p
o
M16C/26 Group
The three-phase
shift register
shifts in
synchronization
with the falling
edge of the A4
output.
103