Renesas ZTAT H8S/2357F, Hardware Manual

Page: 460 / 1047

Rev.6.00 Oct.28.2004 page 432 of 1016
REJ09B0138-0600H
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.
0/1 output 0 output 0/1 output 0 output
Do not write
to NDR here
Write to NDR
here
Compare match A
Compare match B
NDR
PODR
Do not write
to NDR here
Write to NDR
here
Write to NDR Write to NDR
Figure 11-11 Non-Overlapping Operation and NDR Write Timing