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Section 10 16-Bit Free-Running Timer (FRT)
Rev. 1.00 Mar. 12, 2008 Page 382 of 1178
REJ09B0403-0100
10.3.3
FRC Clear Timing
FRC can be cleared when compare-match A occurs. Figure 10.4 shows the timing of this
operation.
φ
FRC
N
H'0000
Compare-match
A signal
Figure 10.4 Clearing of FRC by Compare-Match A Signal
10.3.4
Timing of Output Compare Flag (OCF) Setting
The output compare flag, OCFA or OCFB, is set to 1 by a compare-match signal generated when
the FRC value matches the OCRA or OCRB value. This compare-match signal is generated at the
last state in which the two values match, just before FRC increments to a new value. When the
FRC and OCRA or OCRB value match, the compare-match signal is not generated until the next
cycle of the clock source. Figure 10.5 shows the timing of setting the OCFA or OCFB flag.
Compare-match
signal
OCFA, OCFB
OCRA, OCRB
N
FRC
N
N + 1
φ
Figure 10.5 Timing of Output Compare Flag (OCFA or OCFB) Setting
Содержание H8S Family
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Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
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