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TCNT value
H'FFFF
H'1000
H'0000
FTIOA
GRA
Time
H'AA55
H'55AA
H'F000
H'1000
H'F000
H'55AA
GRB
H'AA55
FTIOB
Figure 11-7 Input Capture Operating Example
Figure 11-8 shows an example of buffer operation when the GRA is set as an input-capture
register and GRC is set as the buffer register for GRA. TCNT operates as a free-running counter,
and FTIOA captures both rising and falling edge of the input signal. Due to the buffer operation,
the GRA value is transferred to GRC by input-capture A and the TCNT value is stored in GRA.
TCNT value
H'DA91
H'0245
H'0000
GRC
Time
H'0245
FTIOA
GRA
H'5480
H'0245
H'FFFF
H'5480
H'5480
H'DA91
Figure 11-8 Buffer Operation Example (Input Capture)
Summary of Contents for H8/3670F-ZTAT HD64F3670
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