Thee-Phase Motor Control Timer Function - Renesas M16C/6NK Hardware Manual

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M16C/6N Group (M16C/6NK, M16C/6NM)

23.11 Thee-Phase Motor Control Timer Function

If there is a possibility that you may write data to TAi-1 register (i = 1, 2, 4) near Timer B2 overflow, read the
value of TB2 register, verify that there is sufficient time until Timer B2 overflows, before doing an immediate
write to TAi-1 register.
In order to shorten the period from reading TB2 register to writing data to TAi-1 register, ensure that no
interrupt will be processed during this period.
If there is not enough time till Timer B2 overflows, only write to TAi-1 register after Timer B2 overflowed.
Rev.2.00 Nov 28, 2005
REJ09B0124-0200
page 356 of 378
23. Usage Precaution