M16C26 Datasheet, PDF (112/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

Udenvdeelropment
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative
Three-Phase Motor Control Timer Function
and
subject to change.
SINGLE-CHIP 16-BIT
M16C/26 Group
CMOS MICROCOMPUTER
A carrier wave of sawtooth waveform
Carrier wave
Signal wave
Timer B2
Trigger signal for
timer Ai start
(timer B2 overflow
signal)
Timer A4 output
m
U phase output
signal
U phase
output signal
U phase
U phase
Interrupt occurs.
Rewriting the value of timer A4.
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.
The three-phase
n
o
p
shift register
shifts in
synchronization
with the falling
edge of timer A4.
Dead time
Note: Set to sawtooth modulation mode and to three-phase mode 0.
Figure 1.14.10. Timing chart of operation (3)
106
Renesas Technology Corp.