HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 834

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

B.2
Following items should be considered for the PCB design.
• The external oscillator circuit should be placed as near from oscillator IC as possible.
• Ground plane should not be placed under the oscillator circuit area.
• Signal line length should be shorter ( shorter than 2cm ).
• Keep spacing between two signal lines connected to the crystal resonator. Do not place them
• If a shield is required for oscillator circuit, the shield area should be as small as necessary.
Rev. 1.00, 02/04, page 796 of 804
For further information on Appendix B, please contact:
Kinseki,Limited (Headquarter)
close to each other.
Feedback resistor
Note on PCB design
Oversea sales
Note:
Board
Thick lines are the ground plane and signal lines
except the oscillator circuit.
PCB cross section (multi-layer board)
1-8-1, Izumihon-cho, Komae-shi, Tokyo, 201-8648 Japan
http://www.kinseki.co.jp/ E-mail:[e-mail]
TEL [phone] FAX [phone]
Crystal oscillator
Top view of PCB
circuit
Capacitor
x-tal
IC
( no ground plane and signal line )
shorter than 2cm
No wiring area
If the shield plane connected to the ground
is required for oscillation circuit, the farthest
layer from the oscillator circuit should be used.
GND
Inner layer