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H8S2245 Datasheet(PDF) 417 Page - Renesas Technology Corp

Part # H8S2245
Description  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
PDF  818 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S2245 Datasheet(HTML) 417 Page - Renesas Technology Corp

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Section 10 8-Bit Timers
Rev.3.00 Mar. 26, 2007 Page 375 of 772
REJ09B0355-0300
φ
External clock
input
Clock input
to TCNT
TCNT
N–1
N
N+1
Figure 10.3 Count Timing for External Clock Input
10.3.2
Compare Match Timing
Setting of Compare Match Flags A and B (CMFA, CMFB)
The CMFA and CMFB flags in TCSR are set to 1 by a compare match signal generated when the
TCOR and TCNT values match. The compare match signal is generated at the last state in which
the match is true, just before the timer counter is updated.
Therefore, when TCOR and TCNT match, the compare match signal is not generated until the
next incrementation clock input. Figure 10.4 shows this timing.
φ
TCNT
N
N+1
TCOR
N
Compare match
signal
CMF
Figure 10.4 Timing of CMF Setting



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