SN8P2613 datasheet(49/102 Pages) SONIX

49 / 102 page

SN8P2610 Series

8-Bit Micro-Controller

SONiX TECHNOLOGY CO., LTD

Page 49

Version 1.3

4.4 SYSTEM HIGH CLOCK

The system high clock is from internal 16MHz oscillator RC type or external oscillator. The high clock type is controlled

by “High_Clk” code option.

High_Clk Code Option

Description

IHRC_16M

The high clock is internal 16MHz oscillator RC type. XIN and XOUT pins are general

purpose I/O pins.

The high clock is external RC type oscillator. XOUT pin is general purpose I/O pin.

12M

The high clock is external high speed oscillator. The typical frequency is 12MHz.

The high clock is external oscillator. The typical frequency is 4MHz.

4.4.1 INTERNAL HIGH RC

The chip is built-in RC type internal high clock (16MHz) controlled by “IHRC_16M” code options. In “IHRC_16M” mode,

the system clock is from internal 16MHz RC type oscillator and XIN / XOUT pins are general-purpose I/O pins.

IHRC:

High clock is internal 16MHz oscillator RC type. XIN/XOUT pins are general purpose I/O pins.

4.4.2 EXTERNAL HIGH CLOCK

External high clock includes three modules (Crystal/Ceramic, RC and external clock signal). The high clock oscillator

module is controlled by High_Clk code option. The start up time of crystal/ceramic and RC type oscillator is different.

RC type oscillator’s start-up time is very short, but the crystal’s is longer. The oscillator start-up time decides reset time

length.

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