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alexey_h
Visitor II
February 26, 2006
Question

Time to stabilize internal oscillator

  • February 26, 2006
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Posted on February 26, 2006 at 02:39

Time to stabilize internal oscillator

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    alexey_hAuthor
    Visitor II
    February 26, 2006
    Posted on February 26, 2006 at 02:39

    Hello,

    I am using ST10F269-Q3 with custom power supply, which generates RESET signal for MCU. I found in ST10 datasheet, p.103, phrase: ''Depending on crystal frequency,

    the on-chip oscillator needs about 10ms to

    50ms to stabilize.'' So can you say what delay must be enough between VDD valid (> 4.5 V) and RESET up ? I am using crystal MG3A connected to ST10 with two NPO capacitors 22 pF on GND. Crystal frequency 10 MHz, multiplier = 4. Is there any formula, table or another rule to select this time delay ?

    Thank you.

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