HD6433682 ETC, HD6433682 Datasheet - Page 104

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

5.4
5.4.1
Resonator characteristics are closely related to board design and should be carefully evaluated by
the user, referring to the examples shown in this section. Resonator circuit constants will differ
depending on the resonator element, stray capacitance in its interconnecting circuit, and other
factors. Suitable constants should be determined in consultation with the resonator element
manufacturer. Design the circuit so that the resonator element never receives voltages exceeding
its maximum rating.
5.4.2
When using a crystal resonator (ceramic resonator), place the resonator and its load capacitors as
close as possible to the OSC
resonator circuit to prevent induction from interfering with correct oscillation (see figure 5.11).
Rev. 3.00, 05/03, page 74 of 472
Usage Notes
Note on Resonators
Notes on Board Design
Figure 5.11 Example of Incorrect Board Design
1
Avoid
and OSC
OSC
OSC
2
pins. Other signal lines should be routed away from the
1
2
Signal A
Signal B
C
C
1
2