Datasheet

Section 11 Programmable Pulse Generator (PPG)
Rev.6.00 Sep. 27, 2007 Page 555 of 1268
REJ09B0220-0600
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.
Note: * The DMAC is not supported in the H8S/2321.
0/1 output0 output 0/1 output0 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