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io output port expansion circuit and household appliances

A technology of output ports and extended circuits, applied in the field of electronics, can solve the problems of difficult maintenance, more increase, and complicated circuits.

Active Publication Date: 2021-04-20
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In circuit design, it is often encountered that chip resources are tight, or IO port pins are not enough, and the price of replacing a chip with large resources will increase a lot. For example, when multiple loads usually require multiple IO ports to separate drive, resulting in complex circuits and difficult maintenance

Method used

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  • io output port expansion circuit and household appliances
  • io output port expansion circuit and household appliances
  • io output port expansion circuit and household appliances

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0024] The following describes the IO output port expansion circuit and household appliances according to the embodiments of the present invention with reference to the accompanying drawings.

[0025] figure 1 It is a structural block diagram of an IO output port expansion circuit according to an embodiment of the present invention. Such as figure 1 As shown, the IO output port expansion circuit includes: an input port 10 , a plurality of output ports 20 , a general control circuit 30 and a plurality of control circuits 40 .

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PUM

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Abstract

The invention discloses an IO output port expansion circuit and a household appliance, wherein the expansion circuit comprises: an input port, the input port is used for inputting control signals; a plurality of output ports; a total control circuit, one end of the total control circuit is connected to the input port Multiple control circuits, the output terminals of each control circuit are respectively connected to an output port, and the input terminals of multiple control circuits are respectively connected to the input port or connected to the input port through the total control circuit; A control circuit, or, after conversion of the general control circuit and multiple control circuits, drive signals corresponding to the multiple control circuits are generated and output through corresponding output ports to drive corresponding loads. The expansion circuit of the embodiment of the present invention can achieve the purpose of expanding the IO output port, and the circuit is simple and the cost is low.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an IO output port expansion circuit and a household appliance. Background technique [0002] In circuit design, it is often encountered that chip resources are tight, or IO port pins are not enough, and the price of replacing a chip with large resources will increase a lot. For example, when multiple loads usually require multiple IO ports to separate drive, resulting in complex circuits and difficult maintenance. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the above-mentioned technologies at least to a certain extent. Therefore, the first object of the present invention is to provide an IO output port expansion circuit. The expansion circuit can realize different control outputs according to the control signal input from the input port, that is, the purpose of expanding the IO output port is achieved, and the ci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/10
CPCG06F13/102
Inventor 钟石刚李信合麻百忠雷俊刘金明吕文灿
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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