HD6437020 Datasheet, PDF (296/507 Pages) Hitachi Semiconductor – SuperH™ RISC engine

Timing of Setting IMFA, IMFB for Input Capture: The IMFA and IMFB are set to 1 by an
input capture signal. At this time, the TCNT contents are transferred to the GR. Figure 10.55
shows the timing.
CK
Input
capture
signal
IMF
TCNT
GR
N
N
IMI
Figure 10.55 Timing of Setting IMFA and IMFB for Input Capture
Timing of Setting Overflow Flag (OVF): The OVF is set to 1 when the TCNT overflows from
H'FFFF–H'0000 or underflows from H'0000–H'FFFF. Figure 10.56 shows the timing.
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