R01UH0092EJ0110 Rev.1.10
Page 345 of 807
Jul 31, 2012
M16C/64C Group
19. Three-Phase Motor Control Timer Function
19.3.1.5
Simultaneous Conduction Prevention
This function prevents the upper and lower output signals from being active simultaneously due to
program errors or unexpected program operation. When the high- and low-side output signals
become active at the same time while the simultaneous conduction is disabled by the INV04 bit in the
INVC0 register, the following occur:
•
The INV03 bit in the INVC0 register becomes 0 (three-phase motor control timer output disabled).
•
The INV05 bit in the INVC0 register becomes 1 (simultaneous conduction detected).
•
Pins U,
U
, V,
V
, W, and
W
become high-impedance.
19.3.1.6
Three-Phase PWM Waveform Output Pins
Pins U,
U
, V,
V
, W, and
W
output a PWM waveform under the following conditions:
•
The INVC02 bit in the INVC0 register is 1 (three-phase motor control timer function).
•
The INVC03 bit in the INVC0 register is 1 (three-phase motor control timer output enabled).
•
Bits PFC5 to PFC0 in the PFCR register are 1 (three-phase PWM output (selected independently
for each pin)).
The three-phase output forced cutoff by the
SD
pin is available.
Содержание M16C Series
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