Hitachi H8/3048 Hardware Manual page 389

Timing of Setting of IMFA and IMFB by Input Capture: IMFA and IMFB are set to 1 by an
input capture signal. The TCNT contents are simultaneously transferred to the corresponding
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general register. Figure 10-58 shows the timing.
ø
Input capture
signal
IMF
TCNT
GR
IMI
Figure 10-58 Timing of Setting of IMFA and IMFB by Input Capture
Timing of Setting of Overflow Flag (OVF): OVF is set to 1 when TCNT overflows from H'FFFF
to H'0000 or underflows from H'0000 to H'FFFF. Figure 10-59 shows the timing.
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