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Circuit for realizing LED drive through shifting register

A technology of LED drive and shift register, applied in static memory, digital memory information, instruments, etc., can solve the problems of inability to disassemble the cable, unstable internal structure of the device, etc., and achieve the effect of less port resources and lower product cost.

Inactive Publication Date: 2019-04-16
山东欧德利电气设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a circuit for realizing LED driving through a shift register, which solves the problem that the cable connector cannot be disassembled very quickly and the internal structure of the device is unstable

Method used

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  • Circuit for realizing LED drive through shifting register

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Embodiment Construction

[0012] 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.

[0013] see figure 1 , the present invention provides a technical solution: a circuit for realizing LED driving through a shift register, including a first MCU controller 1, a second MCU controller 2, and a first QE tube of the first MCU controller 1 Pin, the first GND pin of the first MCU controller 1, the second QE pin of the second MCU controller 2, and the second GND pin of the second MCU controller 2 are connected in series and connected to the negative po...

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Abstract

The invention discloses a circuit for realizing LED drive through a shifting register. The circuit comprises a first MCU controller and a second MCU controller; a first QE pin of the first MCU controller, a first GND pin of the first MCU controller, a second QE pin of the second MCU controller and a second GND pin of the second MCU controller are serially connected together and connected to a power cathode; a first VCC pin of the first MCU controller and a second VCC pin of the second MCU controller are connected to a power anode; a capacitor C2 is serially connected with a resistor R1, the capacitor C6 is serially connected to a resistor R5; light-emitting diodes are serially connected with the resistor R6, and the light-emitting diodes are connected to the second Q6 pin of the second MCUcontroller in parallel; the second Q5 pin and the second Q6 pin of the second MCU controller are connected with two digital display tubes. The display drive of the LED is realized by utilizing less IO pins of the MCU, the port resource occupying the MCU is less, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of electronic products, in particular to a circuit for realizing LED driving through a shift register. Background technique [0002] When designing electronic products, many products need to design display interfaces, and most of them are displayed by LED digital tubes. In the digital tube display circuit, a large number of IO ports of the MCU need to be occupied, and the IO ports of the MCU are limited. Selecting a high-end MCU will increase product cost. If the LED driver chip is used to realize it, the number of occupied IO ports will not be reduced too much, and the price of the general LED driver chip is relatively high, which is not conducive to reducing the cost. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a circuit for realizing LED driving through a shift register, which solves the problem that the cable connector cannot be disas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G11C19/28
CPCG09G3/32G09G2310/0286G11C19/28
Inventor 袁平史张鹏刘克明
Owner 山东欧德利电气设备有限公司
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