SH7040 Datasheet, PDF (122/923 Pages) Renesas Technology Corp – Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

4.5.2 Notes on Board Design
When connecting a crystal oscillator, observe the following precautions:
• To prevent induction from interfering with correct oscillation, do not route any signal lines
near the oscillator circuitry.
• When designing the board, place the crystal oscillator and its load capacitors as close as
possible to the XTAL and EXTAL pins.
Figure 4.5 shows the precautions regarding oscillator block board settings.
Crossing of signal
lines prohibited
C_L1
XTAL
C_L2
EXTAL
Figure 4.5 Cautions for Oscillator Circuit System Board Design
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