M16C26 Datasheet, PDF (110/239 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
Assigning certain values to DU0 (bit 0 at 034A16) and DUB0 (bit 1 at 034A16), and to DU1 (bit 0 at
034B16) and DUB1 (bit 1 at 034B16) allows the user to output the waveforms as shown in Figure 1.14.9,
that is, to output the U phase alone, to fix U phase to “H”, to fix the U phase to “H,” or to output the U phase
alone.
Carrier wave
Signal wave
Timer B2
Rewriting timer A4 every timer B2 interrupt occurs.
Trigger signal for
timer Ai start
(timer B2 overflow
signal)
Timer A4 output
Timer B2 interrupt occurs.
Rewriting three-phase buffer register.
m
n
m
n
m
p
o
U phase
output signal
U phase
output signal
U phase
U phase
Dead time
Note: Set to triangular wave modulation mode and to three-phase mode 0.
Figure 1.14.9. Timing chart of operation (2)
104
Renesas Technology Corp.