RL78/G13 CHAPTER 6 TIMER ARRAY UNIT
R01UH0146EJ0100 Rev.1.00 372
Sep 22, 2011
6.6.3 Cautions on Channel Output Operation
(1) Changing values set in the registers TOm, TOEm, TOLm, and TOMm during timer operation
Since the timer operations (operations of timer count register mn (TCRmn) and timer data register mn (TDRmn)) are
independent of the TOmn output circuit and changing the values set in timer output register m (TOm), timer output
enable register m (TOEm), timer output level register m (TOLm), and timer output mode register m (TOMm) does not
affect the timer operation, the values can be changed during timer operation. To output an expected waveform from the
TOmn pin by timer operation, however, set the TOm, TOEm, TOLm, and TOMm registers to the values stated in the
register setting example of each operation shown by 6.7 and 6.8.
When the values set to the TOEm, TOLm, and TOMm registers (but not the TOm register) are changed close to the
occurrence of the timer interrupt (INTTMmn) of each channel, the waveform output to the TOmn pin might differ,
depending on whether the values are changed immediately before or immediately after the timer interrupt (INTTMmn)
occurs.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0 to 7)
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