M16C26A Datasheet, PDF (147/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)
12. Timer
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)
and setting the PFCi (i=0 to 5) in the PFCR register to “0”(I/O port), the three-phase PWM output pin (U,
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U, V, V, W and W) functions as I/O port. Each bit in the PFCi bits (i=0 to 5) is applicable for each one of
three-phase PWM output pins. Figure 12.3.2.1 shows the example of three-phase/port output switch
function. Figure 12.3.2.2 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⁽¹⁾
PFC0 bit : "1"
PFC2 bit : "1"
PFC4 bit : "0"
Writing PFCR register⁽¹⁾
PFC0 bit : "1"
PFC2 bit : "0"
PFC4 bit : "1"
NOTE:
1. A hazard may be generated at the output signal, depending on the output switch timing. Also, do not generate (short) be switching to port output
during the dead time of three-phase output.
Figure 12.3.2.1. Usage Example of Three-phse/Port output switch function
Rev. 2.00 Feb.15, 2007 ^{page 130} of 329
REJ09B0202-0200