HD6437020 Datasheet, PDF (268/507 Pages) Hitachi Semiconductor – SuperH™ RISC engine

• Input capture operation
Figure 10.24 illustrates input capture. The falling edge of TIOCB and both edges of TIOCA
are selected as input capture edges. In the example, TCNT is set to clear at the input capture of
GRB.
TCNT
value
H'0180
H'0160
H'0005
H'0000
TIOCB
TIOCA
Counter cleared
by TIOCB input
(falling edge)
Time
GRA
GRB
H'0005
H'0160
H'0180
Figure 10.24 Input Capture Operation
254 HITACHI