M16C65 Datasheet, PDF (419/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
19. Three-Phase Motor Control Timer Function
19.3.2 Triangular Wave Modulation Three-Phase Mode 0
Triangular wave modulation uses the timer B2 cycle as a reference cycle. Table 19.8 lists Three-Phase
Mode 0 Specifications, and Figure 19.6 shows Usage Example of Three-Phase Mode 0.
Table 19.8 Three-Phase Mode 0 Specifications
Item
Specification
Carrier wave cycle
(_---m_------+-----1_----)_----×_----2_--
fi
m: Setting value of the TB2 register, 0 to FFFFh
fi: Count source frequency (f1TIMAB, f2TIMAB, f8TIMAB, f32TIMAB,
f64TIMAB, fOCO-F, fOCO-S, fC32)
Three-phase PWM output width _{n-----×-----2--}
fi
n: Setting value of the TAi register, 1 to FFFFh
fi: Count source frequency (f1TIMAB, f2TIMAB, f8TIMAB, f32TIMAB,
f64TIMAB, fOCO-F, fOCO-S, fC32)
Reference cycle
Timer B2 cycle (one-half cycle of the carrier wave)
Timer B2 reload timing Timer B2 underflow
Three-phase PWM
waveform control
Counts the value of the TAi register every time a timer Ai start trigger is
generated (the TAi1 register is not used).
Timer B2 interrupt
When the setting value in the ICTB2 register is n, a timer B2 interrupt
request is generated every nth time of timer B2 underflow (no bits INV00
and INV01 in the INVC1 register).
Detection of a carrier Not detected (the INV13 bit in the INVC1 register is invalid).
wave cycle
(first half or last half)
i = 1, 2, 4
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 384 of 791