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Clock oscillator circuit and MCU control chip

A clock oscillator and control chip technology, applied in power oscillators, electrical components, etc., to improve frequency stability, eliminate temperature changes, and eliminate the effect of power supply voltage on frequency

Pending Publication Date: 2022-04-26
上海列拓科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of this application is to provide a clock oscillator circuit and an MCU control chip to solve the problem that the clock oscillator circuit is affected by various factors

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  • Clock oscillator circuit and MCU control chip
  • Clock oscillator circuit and MCU control chip
  • Clock oscillator circuit and MCU control chip

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0026] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for th...

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Abstract

The invention discloses a clock oscillator circuit and an MCU control chip. The circuit comprises an LDO module serving as a power supply of a main RC oscillator; the main RC oscillator module adopts the current with the zero temperature coefficient as the current for charging and discharging a capacitor in the RC oscillator; and the main RC oscillator module adopts a preset circuit module to determine a reference voltage so as to counteract the influence of the resistance process type change on the reference voltage. The technical problem that a clock oscillator circuit is influenced by multiple factors is solved.

Description

technical field [0001] The present application relates to the field of control chips, in particular to a clock oscillator circuit and an MCU control chip. Background technique [0002] The RC oscillator circuit is an important internal clock trigger source module in the MCU chip, and the high-precision RC oscillator frequency plays a vital role in the stability of the entire system clock. [0003] The inventors found that the frequency stability of the clock oscillator circuit will be affected by many aspects including power supply voltage, temperature and resistance process. [0004] Aiming at the problem in the related art that the clock oscillator circuit is affected by various factors, no effective solution has been proposed so far. Contents of the invention [0005] The main purpose of this application is to provide a clock oscillator circuit and an MCU control chip to solve the problem that the clock oscillator circuit is affected by various factors. [0006] In or...

Claims

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Application Information

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IPC IPC(8): H03B5/12H03B5/04
CPCH03B5/1218H03B5/1228H03B5/04
Inventor 马杰贾振张东彪卢道良朱传坤
Owner 上海列拓科技有限公司
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