ST6253C View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST6253C

8-bit MCUs with A/D converter, safe reset, auto-reload timer, EEPROM and SPI

STMicroelectronics 

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CLOCK SYSTEM (Cont’d)

Figure 10. OSG Filtering Principle

(1)

(2)

(3)

(4)

(1) Maximum Frequency for the device to work correctly

(2) Actual Quartz Crystal Frequency at OSCin pin

(3) Noise from OSCin

(4) Resulting Internal Frequency

Figure 11. OSG Emergency Oscillator Principle

Main

Oscillator

Emergency

Oscillator

Internal

Frequency

19/83

VR001932

VR001933

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