M16C29 Datasheet, PDF (162/499 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/Tiny SERIES

M16C/29 Group
12. Timer (Three-phase Motor Control Timer Function)
12.3.2 Three-phase/Port Output Switch Function
When the INVC03 bit in the INVC0 register set to 1 (Timer output enabled for three-phase motor control)
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and setting the PFCi (i=0 to 5) in the PFCR register to 0 (I/O port), the three-phase PWM output pin (U, U,
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V, V, W and W) functions as I/O port. Each bit of the PFCi bits (i=0 to 5) is applicable for each one of
three-phase PWM output pins. Figure 12.37 shows the example of three-phase/port output switch func-
tion. Figure 12.38 shows the PFCR register and the three-phase protect control register.
Timer B2
U phase
V Phase
W phase
Functions as port P74
Functions as port P72
Writing PFCR register
PFC0 bit: 1
PFC2 bit: 1
PFC4 bit: 0
Writing PFCR register
PFC0 bit: 1
PFC2 bit: 0
PFC4 bit: 1
Figure 12.37 Usage Example of Three-phse/Port Output Switch Function
Rev. 1.12 Mar.30, 2007 ^{page 138} of 458
REJ09B0101-0112