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SH7018 Datasheet(PDF) 61 Page - Renesas Technology Corp

Part # SH7018
Description  SuperH??RISC engine
PDF  431 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7018 Datasheet(HTML) 61 Page - Renesas Technology Corp

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4.2.2
External Clock Input
Input the external clock to the EXTAL pin and leave the XTAL pin open (figure 4.4.). The
external clock frequency should be the same as that of the system clock (CK).
XTAL
Open
EXTAL
External clock input
Figure 4.4 External Clock Input
4.3
Usage Notes
Note on Board Design: Place the crystal resonator and load capacitors as close as possible to the
EXTAL and XTAL pins. To prevent induction from interfering with correct oscillation, ensure
that other signal lines to not cross the EXTAL and XTAL pin signal lines.
XTAL
SH7018
EXTAL
Avoid crossing
signal lines
CL2
CL1
Figure 4.5 Note on Board Design



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