H838024 datasheet(151/697 Pages) RENESAS

Part #	H838024

Description	Renesas 8-Bit Single-Chip Microcomputer Super Low Power Series

PDF	697 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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151 / 697 page

Section 4 Clock Pulse Generators

Rev. 7.00 Mar 10, 2005 page 109 of 652

REJ09B0042-0700

Notes on Board Design

When generating clock pulses by connecting a crystal or ceramic oscillator, pay careful attention

to the following points.

Avoid running signal lines close to the oscillator circuit, since the oscillator may be adversely

affected by induction currents. (See figure 4.6.)

The board should be designed so that the oscillator and load capacitors are located as close as

possible to pins OSC1 and OSC2.

OSC

Signal A

Signal B

To be avoided

××

Figure 4.6 Board Design of Oscillator Circuit

Note:

The circuit parameters above are recommended by the crystal or ceramic oscillator

manufacturer.

The circuit parameters are affected by the crystal or ceramic oscillator and floating

capacitance when designing the board. When using the oscillator, consult with the crystal

or ceramic oscillator manufacturer to determine the circuit parameters.

H838024 Datasheet(PDF) 151 Page - Renesas Technology Corp