Renesas H8S Series Hardware Manual page 460

Therefore, 0 data can be transferred ahead of 1 data by making compare match B occur before compare match A. The
NDR contents should not be altered during the interval from compare match B to compare match A (the non-overlap
margin).
This can be accomplished by having the TGIA interrupt handling routine write the next data in NDR, or by having the
TGIA interrupt activate the DTC or DMAC. Note, however, that the next data must be written before the next compare
match B occurs.
Figure 11-11 shows the timing of this operation.
Compare match A
Compare match B
NDR
PODR
Rev.6.00 Oct.28.2004 page 432 of 1016
REJ09B0138-0600H
0 output
Do not write
to NDR here
Figure 11-11 Non-Overlapping Operation and NDR Write Timing
Write to NDR
0/1 output 0 output
Write to NDR
here
Do not write
to NDR here
Write to NDR
0/1 output
Write to NDR
here