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  3. Oscillator start-up timer
Oscillator start-up timer
From Wikipedia, the free encyclopedia

An oscillator start-up timer (OST) is a module used by some microcontrollers to keep the device reset until the crystal oscillator is stable. When a crystal oscillator starts up, its frequency is not constant, which causes the clock frequency to be non-constant. This would cause timing errors, leading to many problems. An oscillator start-up timer ensures that the device only operates when the oscillator generates a stable clock frequency.[1][2] The PIC microcontroller's oscillator start-up timer holds the device's reset for a 1024-oscillator-cycle delay to allow the oscillator to stabilize.[3]

See also

[edit]

References

[edit]
  1. ^ PIC tutorials - PIC16x8x, retrieved 27 October 2011
  2. ^ Maxim - Crystal Considerations with Maxim Real-Time Clocks, retrieved 27 October 2011
  3. ^ Microchip - reset, retrieved 27 October 2011
Stub icon

This electronics-related article is a stub. You can help Wikipedia by adding missing information.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Oscillator_start-up_timer&oldid=1314471247"
Sunting pranala
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