7906 datasheet(150/531 Pages) RENESAS

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TIMER A

7906 Group User’s Manual Rev.2.0

7-47

[Precautions for pulse width modulation (PWM) mode]

1. Each of timers A3, A5 to A8 is not equipped with the pulse width modulation (PWM) mode.

2. If the count start bit is cleared to “0” during PWM pulse output, the counter stops counting. If the TAjOUT

pin outputs “H” level at that time, the output level will become “L” and the timer Aj interrupt request bit

will be set to “1.” When the TAjOUT pin outputs “L” level at that time, the output level will not change and

no timer Aj interrupt request will occur.

3. When the timer’s operating mode is set by one of the following procedures, the timer Aj interrupt request

bit is set to “1.”

qWhen the PWM mode is selected after reset

qWhen the operating mode is switched from the timer mode to the PWM mode

qWhen the operating mode is switched from the event counter mode to the PWM mode

Accordingly, when using a timer Aj interrupt (interrupt request bit), be sure to clear the timer Aj interrupt

request bit to “0” after the above setting.

[Precautions for pulse width modulation (PWM) mode]

7906 Datasheet(PDF) 150 Page - Renesas Technology Corp