HD64F2638F20J Datasheet, PDF (472/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 11 Programmable Pulse Generator (PPG)
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
11.4 Usage Notes
Operation of Pulse Output Pins: Pins PO8 to PO15 are also used for other peripheral functions
such as the TPU. When output by another peripheral function is enabled, the corresponding pins
cannot be used for pulse output. Note, however, that data transfer from NDR bits to PODR bits
takes place, regardless of the usage of the pins.
Pin functions should be changed only under conditions in which the output trigger event will not
occur.
Note on Non-Overlapping Output: During non-overlapping operation, the transfer of NDR bit
values to PODR bits takes place as follows.
• NDR bits are always transferred to PODR bits at compare match A.
• At compare match B, NDR bits are transferred only if their value is 0. Bits are not transferred
if their value is 1.
Figure 11-10 illustrates the non-overlapping pulse output operation.
DDR
NDER
Q
Compare match A
Compare match B
Pulse
output
pin
C
Q PODR D
Q NDR D
Internal data bus
Normal output/inverted output
Figure 11-10 Non-Overlapping Pulse Output
Page 422 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010