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Serial port communication circuit

A serial port communication and circuit technology, applied in the field of serial port communication circuit, can solve problems such as level mismatch, communication data loss, breakdown, etc., and achieve the effect of high integration and low power consumption

Inactive Publication Date: 2017-05-31
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In embedded development, software and hardware development engineers often use the universal serial port (UART) for downloading, debugging and tracking. Problems such as breakdown and voltage instability lead to loss of communication data, etc., which bring a lot of trouble to serial port debugging and testing

Method used

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  • Serial port communication circuit

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] like figure 1 A serial port communication circuit shown includes a processor serial port communication terminal, and is characterized in that: the processor includes an on-chip charge pump with voltage boost and voltage polarity change, and also includes two receivers, two road driver and a power supply capable of providing 5V voltage to the processor, and the serial port communication port of the processor includes U1_TX, U1_RX, and GND5V interfaces.

[0015] Wherein, four capacitors are arranged on the outside of the serial port communication end of the processor; a transceiver module ...

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Abstract

The invention discloses a serial port communication circuit. The serial port communication circuit comprises a processor serial port communication terminal and is characterized in that a processor comprises a on-chip charge pump, a two-way receiver, a two-way actuator and a power supply, wherein the on-chip charge pump has the functions of boosting and voltage polarity changing, and the power supply can provide 5V voltage for the processor. The processor serial port communication terminal comprises a U1-TX interface, a U1-RX interface and a GND5V interface, only one single +5V power supply is needed to supply power to the processor, and due to the on-chip charge pump of the processor, the processer has the properties of boosting and voltage polarity changing. Max3232 has the two-way receiver and the two-way actuator, a 1uA switch-off mode is provided, the efficacy is effectively improved, and the service life of a battery of a portable product is prolonged. The serial port communication circuit can supply +10V voltage V+ and -10V voltage V-, and is low in power consumption. Due to the high integration level, the serial port communication circuit can work with only at least four capacitors which are connected to the exterior of the serial port communication circuit.

Description

technical field [0001] The invention relates to the technical field of communication circuits, in particular to a serial port communication circuit. Background technique [0002] Universal Serial Port (UART), as a simple and applicable communication interface, has strong vitality. Under the circumstance that various new communication methods emerge in an endless stream, the Universal Serial Port (UART) still plays an irreplaceable role in the communication field. In embedded development, software and hardware development engineers often use the universal serial port (UART) for downloading, debugging and tracking. Problems such as breakdown and voltage instability leading to loss of communication data have brought a lot of trouble to serial port debugging and testing. Contents of the invention [0003] (1) Technical problems to be solved [0004] In order to overcome the deficiencies of the prior art, a serial port communication circuit is proposed to improve circuit sec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
CPCG06F13/4068Y02D10/00
Inventor 徐易朗吴言
Owner CHONGQING UNIV