M16C65 Datasheet, PDF (424/829 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
19.3.3 Triangular Wave Modulation Three-Phase Mode 1
Triangular wave modulation uses twice the cycles of timer B2 as a reference cycle. Table 19.11 lists
Three-Phase Mode 1 Specifications, and Figure 19.7 shows Usage Example of Three-Phase Mode 1.
Table 19.11 Three-Phase Mode 1 Specifications
Item
Carrier wave cycle
Three-phase PWM output width
Differences Reference cycle
from
three-
Timer B2 reload timing
phase
mode 0
Three-phase PWM
waveform control
Timer B2 interrupt
i = 1, 2, 4
Detection of a carrier
wave cycle
(first half or last half)
Specification
(_---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)
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)
Twice the cycle of timer B2 (cycle of the carrier wave)
Select either of the following:
• Timer B2 underflow
• Timer A output at an odd number of times
Counts the values of registers TAi and TAi1 alternately every time
the Timer Ai start trigger is generated
Select a count timing for the ICTB2 register:
• Timer B2 underflow
• When the INV13 bit changes its value from 0 to 1
• When the INV13 bit changes its value from 1 to 0
When the setting value in the ICTB2 register is n, the timer B2
interrupt request is generated every nth time of the timing selected
by bits INV00 and INV01 in the INVC1 register.
Detected
(The INV13 bit in the INVC1 register is valid.)
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 389 of 791