M16C65 Datasheet, PDF (399/829 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
Table 19.1 Three-Phase Motor Control Timer Functions Specifications
Item
Operation modes
Three-phase waveform
output pin
Forced cutoff input
Used timers
Output waveform
Carrier wave cycle
Specification
• Triangular wave modulation three-phase mode 0
Three-phase PWM waveform of triangular wave modulation is output.
Output data is updated every half cycle of the carrier wave, and output
waveform is generated.
• Triangular wave modulation three-phase mode 1
Three-phase PWM waveform of triangular wave modulation is output.
Output data is updated every cycle of the carrier wave, and output
waveform is generated.
• Sawtooth wave modulation mode
Three-phase PWM waveform of sawtooth wave modulation is output.
Six pins (U, U, V, V, W, W)
Input a low-level signal to the SD pin
Timers A4, A1, A2 (used in one-shot timer mode)
Timer A4: U-/U-phase waveform control
Timer A1: V-/V-phase waveform control
Timer A2: W-/W-phase waveform control
Timer B2 (used in timer mode)
Carrier wave cycle control
Dead time timer (three eight-bit timers and shared reload register)
Dead time control
Triangular wave modulation, sawtooth wave modulation
• All high or low outputs for one cycle supported
• Output logic of high- and low-side turn-on signals can be set separately.
Triangular wave modulation
:
(_---m_------+-----1_----)_----×_----2_--
fi
Three-phase PWM output
width
Sawtooth wave modulation : ^m-------+-----¹--
fi
m: Setting value of the TB2 register, 0000h to FFFFh
fi: Count source frequency (f1TIMAB, f2TIMAB, f8TIMAB, f32TIMAB,
f64TIMAB, fOCO-F, fOCO-S, fC32)
Triangular wave modulation : ⁿ-----^×-----²--
fi
Dead time (width)
Active level
Simultaneous conduction
prevention function
Interrupt frequency
Sawtooth wave modulation : ⁿ--
fi
n: Setting value of registers TA4, TA1, and TA2 (of registers TA4, TA41, TA1,
TA11, TA2, and TA21 when setting the INV11 bit to 1), 0001h to FFFFh
fi: Count source frequency (f1TIMAB, f2TIMAB, f8TIMAB, f32TIMAB,
f64TIMAB, fOCO-F, fOCO-S, fC32)
p_--
fi
or no dead time
p: Setting value of the DTT register, 01h to FFh
fi: Count source frequency (f1TIMAB, f2TIMAB, f1TIMAB divided by 2,
f2TIMAB divided by 2)
Selectable either active high or active low
Simultaneous conduction prevention
Simultaneous conduction detection
Timer B2 interrupt is generated every carrier wave cycle to every 15 carrier
wave cycles.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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