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7721 Datasheet(PDF) 166 Page - Renesas Technology Corp

Part # 7721
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 Datasheet(HTML) 166 Page - Renesas Technology Corp

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TIMER A
7721 Group User’s Manual
8–47
8.6 Pulse width modulation (PWM) mode
[Precautions for PWM mode]
1. If the count start bit is cleared to “0” while outputting PWM pulses, the counter stops counting. When the
TAjOUT pin was outputting “H” level at that time, the output level becomes “L” and the timer Aj interrupt
request bit is set to “1.” When the TAjOUT pin was outputting “L” level, the output level does not change
and a timer Aj interrupt request does not occur.
2. 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 the timer Aj interrupt (interrupt request bit), be sure to clear the timer Aj interrupt
request bit to “0” after the above setting.



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