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Wide-voltage, level-adaptive and multiplexed UART (Universal Asynchronous Receiver/Transmitter) communication serial port integrated circuit

A multiplexing, communication serial port technology, applied in the direction of fail-safe circuit, logic circuit interface device, voltage/temperature change compensation, etc., can solve the problems affecting the normal use of the product, achieve the effect of preventing short circuit and prolonging the service life

Pending Publication Date: 2022-04-22
SUZHOU KUNSHAN GENERAL LOCKSET CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the external interface is damaged, it will even affect the normal use of other functions of the product

Method used

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  • Wide-voltage, level-adaptive and multiplexed UART (Universal Asynchronous Receiver/Transmitter) communication serial port integrated circuit

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] see figure 1 , the present invention is a wide voltage, level self-adaptive, multiplexed UART communication serial port integrated circuit, including a PCB board, the PCB board is provided with a microprocessor, a communication interface, a DC capacitor, a switch tube , the first resistor, the second resistor, the third resistor and the fourth resistor, the communication interface includes a signal input terminal and a signal output terminal, the signal...

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Abstract

The invention relates to an integrated circuit, in particular to a wide-voltage, level-adaptive and multiplexed UART (universal asynchronous receiver / transmitter) communication serial port integrated circuit which comprises a PCB (printed circuit board), a microprocessor, a communication interface, a blocking capacitor, a switching tube, a first resistor, a second resistor, a third resistor and a fourth resistor are arranged on the PCB, a signal input end is provided with two or four paths of signal input, and the circuit receives signals and outputs the signals. The processing circuit performs round-robin processing similar to multi-thread round-robin processing, signals are output in four paths or six paths or eight paths after being processed, and according to requirements, the signals are classified through different signal input ends and are output to the WIFI control module through the first signal output end, and the signals are output to the fingerprint control module through the second signal output end. The third signal output end outputs to the control card swiping module, the fourth signal output end outputs to the control standby module, and a group of serial ports can multiplex two or more serial port devices to be freely switched by arranging a plurality of signal output ends.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a UART communication serial port integrated circuit with wide voltage, self-adaptive level and multiplexing. Background technique [0002] With the development of the Internet of Things and artificial intelligence technology, the intelligence of products is gradually increasing, and the power consumption and cost requirements of products are also getting lower and lower, resulting in more and more complicated and difficult product maintenance, which usually requires an external communication interface. To support the maintenance function of the product, and this external interface usually needs to add a communication interface chip. When the external interface is damaged, it will even affect the normal use of other functions of the product. Contents of the invention [0003] (1) Solved technical problems [0004] Aiming at the deficiencies of the prior art, the invention pr...

Claims

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Application Information

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IPC IPC(8): H03K19/0175H03K19/003H03K19/007
CPCH03K19/017509H03K19/00369H03K19/007
Inventor 邓武仓
Owner SUZHOU KUNSHAN GENERAL LOCKSET CO LTD