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A general-purpose pin multiplexing circuit

A circuit and pin technology, which is applied in the field of general-purpose pin multiplexing circuits, can solve the problems of single-function pins and resource consumption of pins, and achieve the effects of high flexibility, cost saving, and improved utilization

Active Publication Date: 2022-05-27
擎先电子科技(苏州)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the practice of most domestic manufacturers is to configure different pins into a single functional pin, which consumes a lot of pin resources.

Method used

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  • A general-purpose pin multiplexing circuit

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Embodiment Construction

[0010] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] The universal pin multiplexing circuit of the present invention includes a multiplexing circuit module linked to each universal input pin, one universal input pin corresponds to one input terminal, and each multiplexing circuit module includes a pull-up circuit and a pull-down circuit, The opening and closing of the pull-up circuit and the pull-down circuit are controlled by the control input terminal one EN_1 and the control input terminal two Control_1. The input terminal corresponding to the multiplexing circuit module is simultaneously connected to the pull-up circuit and the pull-down circuit on the one hand, and corresponding to it on the other hand. The general-purpose input pin CPU_IN_1 is connected.

[0012] When configured as logic input and resistive analog input mode, only one of the pull-up circuit and the pu...

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Abstract

The invention discloses a general-purpose pin multiplexing circuit, which includes a multiplexing circuit module connected to each general-purpose input pin, one general-purpose input pin corresponds to one input terminal, and each multiplexing circuit includes a pull-up circuit and a pull-down circuit. circuit, the opening and closing of the pull-up circuit and the pull-down circuit are controlled by the control input terminal 1 and the control input terminal 2. connected to the general-purpose input pins. The invention has the advantages of cost saving, programmable configuration input mode, high flexibility, and compatibility with different vehicle body control modules and instruments.

Description

technical field [0001] The invention belongs to the electronic technology field of the automobile industry, and in particular relates to a general-purpose pin multiplexing circuit. Background technique [0002] At present, there are a variety of different sensors on various equipment of domestic automobiles, which output different signals to the electronic control unit or instrument of the car body, but the external interface of the electronic control unit or instrument is limited. The configuration of the body sensors is also different, and the output signals are also different. At present, the practice of most domestic manufacturers is to configure different pins into a single functional pin, which consumes pin resources very much. SUMMARY OF THE INVENTION [0003] Object of the invention: In view of the above problems, the present invention proposes a general-purpose pin multiplexing circuit, which can provide multiple input options on a single input port. [0004] Te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/0175
CPCH03K19/017509Y02D10/00
Inventor 张翔刘景璋季寅浩赵明明孟洲宇
Owner 擎先电子科技(苏州)有限公司