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H838532H датащи(PDF) 264 Page - Renesas Technology Corp

номер детали H838532H
подробное описание детали  16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series
PDF  508 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H838532H датащи(HTML) 264 Page - Renesas Technology Corp

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Section 9 Timers
Rev. 1.00 May 30, 2008 Page 244 of 484
REJ09B0436-0100
Program process
φw
Interrupt request flag
(IRRTFH, IRRTFL)
Interrupt factor
generation signal
(Internal signal,
nega-active)
Overflow signal,
Compare match signal
(Internal signal,
nega-active)
Interrupt
Interrupt
Normal
Interrupt request
flag clear
Interrupt request
flag clear
(1)
(2)
Figure 9.7 Clear Interrupt Request Flag when Interrupt Factor Generation Signal is Valid
(4) Timer Counter (TCF) Read/Write
When
φw/4 is selected as the internal clock in active (high-speed, medium-speed) mode, write on
TCF is impossible. And, when read TCF, as the system clock and internal clock are mutually
asynchronous, TCF synchronizes with synchronization circuit. This results in a maximum TCF
read value error of
±1.
When read/write TCF in active (high-speed, medium-speed) mode is needed, please select internal
clock except for
φw/4 before read/write.
In subactive mode, even
φw/4 is selected as the internal clock, normal read/write TCF is possible.



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