h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 357

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

12.5.7
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 12.12 shows the timing of setting the OCFA or OCFB flag.
12.5.8
The FRC overflow flag (OVF) is set to 1 when FRC overflows (changes from H'FFFF to H'0000).
Figure 12.13 shows the timing of setting the OVF flag.
FRC
OCRA, OCRB
Compare-match
signal
OCFA, OCFB
Timing of Output Compare Flag (OCF) setting
Timing of FRC Overflow Flag Setting
Figure 12.12 Timing of Output Compare Flag (OCFA or OCFB) Setting
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Section 12 16-Bit Free-Running Timer (FRT)
Rev. 3.00 Jan 25, 2006 page 305 of 872
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