Hitachi H8S/2378, H8S/2378R Series Hardware Manual page 578

2. Examples of waveform output operation
Figure 11.6 shows an example of 0 output/1 output.
In this example, TCNT has been designated as a free-running counter, and settings have been
made so that 1 is output by compare match A, and 0 is output by compare match B. When the
set level and the pin level match, the pin level does not change.
TCNT value
H'FFFF
TGRA
TGRB
H'0000
TIOCA
TIOCB
Figure 11.6 Example of 0 Output/1 Output Operation
Figure 11.7 shows an example of toggle output.
In this example TCNT has been designated as a periodic counter (with counter clearing
performed by compare match B), and settings have been made so that output is toggled by both
compare match A and compare match B.
TCNT value
H'FFFF
TGRB
TGRA
H'0000
TIOCB
TIOCA
Rev. 1.0, 09/01, page 534 of 904
No change
Counter cleared by TGRB compare match
Figure 11.7 Example of Toggle Output Operation
No change
No change
Time
No change
1 output
0 output
Time
Toggle output
Toggle output