 English |
|
|
|
|
|
|
|
| HD6413007F20 Datasheet, PDF (584/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series | |||
| |||
| ◁ |
18. Clock Pulse Generator
18.5.3 Usage Notes
The DIVCR setting changes the Ï frequency, so note the following points.
⢠Select a frequency division ratio that stays within the assured operation range specified for the
clock cycle time tcyc in the AC electrical characteristics. Set Ïmin to the lower limit of the
operating frequency range, and ensure that Ï does not fall below this lower limit.
⢠All on-chip module operations are based on Ï. Note that the timing of timer operations, serial
communication, and other time-dependent processing differs before and after any change in
the division ratio. The waiting time for exit from software standby mode also changes when
the division ratio is changed. For details, see section 19.4.3, Selection of Waiting Time for Exit
from Software Standby Mode.
Rev.5.00 Sep. 12, 2007 Page 554 of 764
REJ09B0396-0500
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese