Renesas 16-bit single-chip microcomputer Manual De Usuario

Rev.1.02    Jul 01, 2005    page 293 of 314
REJ09B0126-0102

M16C/6N Group (M16C/6NL, M16C/6NN)

22. Usage Precaution

This document is under development and its contents are subject to change.

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.