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HD4046212RFS Datasheet(PDF) 83 Page - Renesas Technology Corp

Part # HD4046212RFS
Description  AS Microcomputer Incorporating a DTMF Generator Circuit
PDF  157 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD4046212RFS Datasheet(HTML) 83 Page - Renesas Technology Corp

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HD404629R Series
81
Note on Use
When using the timer output as PWM output, note the following point. From the update of the timer write
register untill the occurrence of the overflow interrupt, the PWM output differs from the period and duty
settings, as shown in table 27. The PWM output should therefore not be used until after the overflow
interrupt following the update of the timer write register. After the overflow, the PWM output will have the
set period and duty cycle.
Table 27 PWM Output Following Update of Timer Write Register
PWM Output
Mode
Timer Write Register is Updated
during High PWM Output
Timer Write Register is Updated
during Low PWM Output
Free
running
Timer write
register
rewrite (set
value is N)
Timer write
register
rewrite (set
value is N)
Interrupt request
generated
Interrupt request
generated
T
× (255 – N) T × (N + 1)
T
× (N' + 1)
T
× (255 – N) T × (N + 1)
Reload
Timer write
register
rewrite (set
value is N)
Timer write
register
rewrite (set
value is N)
Interrupt request
generated
Interrupt request
generated
T
T
× (255 – N)
T
T
T
× (255 – N)
T



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