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H838532H データシート(PDF) 257 Page - Renesas Technology Corp

部品番号 H838532H
部品情報  16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series
PDF  508 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H838532H データシート(HTML) 257 Page - Renesas Technology Corp

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Section 9 Timers
Rev. 1.00 May 30, 2008 Page 237 of 484
REJ09B0436-0100
Figure 9.5 shows an example in which TCF is read when it contains H'AAFF.
Read upper byte
CPU
(H'AA)
TEMP
(H'FF)
TCFH
(H'AA)
TCFL
(H'FF)
Bus
interface
Module data bus
Read lower byte
CPU
(H'FF)
TEMP
(H'FF)
TCFH
(AB)*
TCFL
(00)*
Bus
interface
Module data bus
Note: * H'AB00 if counter has been updated once.
Figure 9.5 Read Access to TCF (TCF
→ CPU)
9.4.4
Operation
Timer F is a 16-bit counter that increments on each input clock pulse. The timer F value is
constantly compared with the value set in output compare register F, and the counter can be
cleared, an interrupt requested, or port output toggled, when the two values match. Timer F can
also function as two independent 8-bit timers.



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