Datasheet

Section 13 Timer RC

Rev. 1.50 Sep. 18, 2007 Page 242 of 584

REJ09B0240-0150

Figure 13.8 shows an example of buffer operation when GRA is set as an input-capture register

and GRC is set as the buffer register for GRA. TRCCNT functions as a free-running counter and

is captured at both rising and falling edges of the FTIOA signal. Due to the buffer operation, the

GRA value is transferred to GRC on an input-capture A and the TRCCNT value is stored in GRA.

TRCCNT

H'DA91

H'0245

H'0000

GRC

Time

H'0245

FTIOA

GRA

H'5480H'0245

H'FFFF

H'5480

H'DA91

Figure 13.8 Buffer Operation Example (Input Capture)