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7477 датащи(PDF) 83 Page - Renesas Technology Corp

номер детали 7477
подробное описание детали  8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES
PDF  354 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7477 датащи(HTML) 83 Page - Renesas Technology Corp

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7470/7471/7477/7478 GROUP USER’S MANUAL
1-66
HARDWARE
1.12 Timers
Fig. 1.12.3 Example of timer mode operation
(n-1)16
FF16
RL
RL
RL
OF
T
A :
Timer 1 interrupt
enable bit
Timer 1 count source
A
A
A
A
RL
OF
OF
OF
Count period
Count period
T(s) = 1
÷ count source frequency ! (the timer initial value + 1)
Timer mode operation example
• OF: Overflow
• RL: Reload
• n: Timer initial value
Timer 1 count stop bit
Down count
Timer 1 interrupt
request bit
“1” is written
“0” is written
Count stop
Count restart
Time
• Clearing by writing “0” to the timer interrupt request bit.
• Clearing by accepting the timer interrupt request when the timer interrupt enable bit is “1.”



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