h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 328

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 12 Programmable Pulse Generator (PPG)
12.4.5
During non-overlapping operation, transfer from NDR to PODR is performed as follows:
Figure 12.6 illustrates the non-overlapping pulse output operation.
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 between compare
match B and 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. Note, however, that the next data must
be written before the next compare match B occurs.
Figure 12.7 shows the timing of this operation.
Rev. 3.00 Oct 04, 2005 page 288 of 598
REJ09B0155-0300
NDR bits are always transferred on PODR bits on compare match A.
On compare match B, NDR bits are transferred only if their value is 0. Bits are not transferred
if their value is 1.
Pulse
output
pin
Non-Overlapping Pulse Output
DDR
Figure 12.6 Non-Overlapping Pulse Output
Normal output/inverted output
Q
NDER
Q
PODR
C
D
Q
NDR
Compare match A
Compare match B
D
Internal data bus