M30622M4 MITSUBISHI [Mitsubishi Electric Semiconductor], M30622M4 Datasheet - Page 110

• Manufacturer Part Number: M30622M4
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Timers’ functions for three-phase motor control
110
Figure 1.18.8. Timing chart of operation (3)
Timer B2
Timer A4 output
U phase output
signal
U phase
Trigger signal for
(timer B2 overflow
signal)
U phase
output signal
U phase
timer Ai start
A carrier wave of sawtooth waveform
Signal wave
Carrier wave
Note: Set to sawtooth modulation mode and to three-phase mode 0.
Dead time
m
Interrupt occurres.
Rewriting the value of timer A4.
n
o
Data transfer is made from the three-
phase buffer register to the three-
phase shift register in step with the
timing of the timer B overflow.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
p
Mitsubishi microcomputers
M16C / 62 Group
The three-phase
shift register
shifts in
synchronization
with the falling
edge of timer A4.