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Analog voltage comparator

An analog voltage and comparator technology, applied in the field of computer technology and integrated circuits, can solve the problems of inflexible use and single function

Active Publication Date: 2019-01-15
BEIJING MXTRONICS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the continuous improvement of the application system's demand for the flexibility of the peripheral modules in the microcontroller, the analog voltage comparator module in the current circuit has a single function and is not flexible enough to use

Method used

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Embodiment Construction

[0041] In order to understand the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] The invention takes 16-bit low-power consumption microcontroller MXT16 as the design background, provides an analog voltage comparator widely applicable to microcontrollers, embedded processors and SoC chips, and has simple structure, reliability and convenient realization. Such as figure 1 As shown, the structure of the analog voltage comparator includes a reference voltage generator, an input selection module, a comparator circuit, an output module, a control register group, address decoding and read and write control logic and an interrupt module.

[0043] The reference voltage generator is used to generate the internal reference voltage of the analog comparator. It receives the comparator switch signal Comp_On and the reference voltage selection signal REF_S[1:0] from the first control reg...

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Abstract

An analog voltage comparator is disclosed. The structure of the analog voltage comparator includes reference voltage generator, input selection module, comparator circuit, output module, control register bank, address decoding and reading / writing control logic and interrupt module, which can realize accurate ramp A / D conversion, power supply voltage management and external analog signal detection.The invention has the characteristics of selectable reference voltage, multiplexable comparator input, selectable comparator output RC filter, comparator circuit and reference voltage generator can be turned off, and has interrupt function. The invention has the advantages of simple structure, reliability, easy cooperation with other functional components and convenient realization on a chip.

Description

technical field [0001] The invention relates to a microcontroller, an embedded processor and an analog voltage comparator in a SoC chip, belonging to the field of computer technology and integrated circuits. Background technique [0002] As a common circuit, the analog voltage comparator is widely used in various analog circuits and digital-analog hybrid circuits, especially in microcontrollers, embedded processors and SoC chips as peripheral modules. With the continuous improvement of the application system's demand for the flexibility of the peripheral modules in the microcontroller, the analog voltage comparator module in the current circuit has a single function and is not flexible enough to use. So exploring how to make the function of the analog voltage comparator module richer and more flexible is one of the technical problems to be solved urgently in the field of peripheral module design in microcontrollers, embedded processors and SoC chips. Contents of the invent...

Claims

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Application Information

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IPC IPC(8): H03K5/24
CPCH03K5/249
Inventor 李林王仕祯张奇荣
Owner BEIJING MXTRONICS CORP
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