Hitachi H8/3048 Hardware Manual page 354

TCNT value
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H'FFFF
GRB
GRA
H'0000
TIOCB
TIOCA
Figure 10-21 shows examples of toggle output. TCNT operates as a periodic counter, cleared
by compare match B. Toggle output is selected for both compare match A and B.
TCNT value
GRB
GRA
H'0000
TIOCB
TIOCA
No change
No change
Figure 10-20 0 and 1 Output (Examples)
Counter cleared by compare match with GRB
Figure 10-21 Toggle Output (Example)
342
Time
No change 1 output
No change 0 output
Time
Toggle
output
Toggle
output