Circuit for solving problem of power-on jitter of MCU IO level signal and electronic payment self-service equipment

Abstract

The invention discloses a circuit for solving a problem of power-on jitter of an MCU IO level signal, and the circuit comprises a communication module and an electronic switch anti-jitter circuit, wherein the communication module is connected with the electronic switch anti-jitter circuit. The electronic switch anti-jitter circuit is arranged to be connected with an OPENCPU version communication module, so IO level jitter during startup is avoided, and the technical problem that the self-service equipment triggers upward score by mistake is solved. The embodiment of the invention further provides the electronic payment self-service equipment. According to the embodiment of the invention, the communication module does not need to be externally connected with an external processor, the structure is simple and the cost is low, and the market competitiveness is good.

Description

technical field [0001] The invention relates to a communication power supply circuit, in particular to a circuit for solving MCU start-up signal level jitter. Background technique [0002] With the rapid development of Internet technology, electronic payment technology has become more and more popular, and self-service equipment as electronic payment terminals has gradually entered people's lives. Existing electronic payment self-service equipment judges the amount paid by the user according to the number of pulses received. The self-service equipment adopts code scanning or coin insertion for payment. After the payment is successful, the payment box will output a low-level pulse or a high-level pulse to the main board of the self-service equipment. The self-service equipment judges the amount paid by the user according to the number of received pulses. [0003] Such as figure 1 As shown, the hardware of the traditional payment box adopts the single-chip microcomputer + co...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the problem of false triggering and upper points caused by unstable IO levels during the power-on period of the OPENCPU version communication module when the payment box is applied.

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