Bidirectional card reading and charging control circuit structure

Abstract

The utility model discloses a bidirectional card-reading charging control circuit structure, which comprises a USB A male head, an MCU, a TF SOC, a power switch, a communication module, a first switch module, a second switch module, a third switch module and an interface, wherein a TF card can be inserted into the USB A male head; the MCU is electrically connected with the USB A male head; the power switch is electrically connected with the USB A male head; the communication module is electrically connected with the MCU and the TF SOC; the first switch module is electrically connected with the USB A male head, the MCU and the communication module. By arranging the interface and the USB A male head into which the TF card can be inserted, and cooperating with the MCU, the TF SOC, the power switch, the communication module, the first switch module, the second switch module and the third switch module, the USB A male head or the interface can be adopted for card reading, bidirectional card reading and charging are realized, and the use is more flexible and convenient.

Description

Technical Field

[0001] The utility model relates to the field of electronic control circuit technology, in particular to a bidirectional card reading and charging control circuit structure. Background Art

[0002] The Micro SD card is an extremely small flash memory card. Its format originated at SanDisk. Originally called a TF card, it was later renamed Trans Flash. The name Micro SD was adopted by the SD Association (SDA). Other SDA-approved memory cards include the Mini SD and SD cards. Primarily used in mobile phones, its compact size and increasing storage capacity have also led to its use in GPS devices, portable music players, and some flash memory drives. At 15mm x 11mm x 1mm, roughly the size of a fingernail, it is the smallest memory card currently available. It can also be connected to an SD card slot using an SD adapter card.

[0003] TF cards typically require a card reader to access data. These readers typically use a USB A male connector, but these readers only read cards and lack charging capabilities, making them inconvenient to use. Currently, data cables with TF card readers are available on the market, offering both card reading and charging functions. However, these cables are only one-way, meaning they can only read cards using a fixed interface, making them inflexible and inconvenient. Therefore, it is necessary to develop a solution to address this issue. Utility Model Content

[0004] In view of this, the present invention aims to address the shortcomings of the prior art, and its main purpose is to provide a bidirectional card reading and charging control circuit structure, which can effectively solve the problem that the existing data line is not flexible and convenient to use.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A bidirectional card reading and charging control circuit structure includes a USB A male connector for inserting a TF card, an MCU, a TF SOC, a power switch, a communication module, a first switch module, a second switch module, a third switch module, and an interface;

[0007] The MCU is electrically connected to the USB A male connector; the TF SOC is electrically connected to the USB A male connector; the power switch is electrically connected to the USB A male connector; the communication module is electrically connected to the MCU and the TF SOC; the first switch module is electrically connected to the USB A male connector, the MCU, and the communication module; the second switch module is electrically connected to the MCU and the communication module; the third switch module is electrically connected to the USB A male connector, the MCU, and the power switch; and the interface is electrically connected to the power switch, the communication module, and the second switch module.

[0008] As a preferred solution, the interface is a Type-C interface.

[0009] As a preferred solution, it further includes a circuit board, and the MCU, TF SOC, power switch, communication module, first switch module, second switch module and third switch module are all arranged on the circuit board.

[0010] As a preferred solution, the interface and the USB A male connector are respectively arranged at two end edges of the circuit board.

[0011] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0012] By setting an interface and a USB A male head for inserting a TF card, and coordinating with an MCU, a TF SOC, a power switch, a communication module, a first switch module, a second switch module and a third switch module, the utility model can use a USB A male head or interface for card reading, realizing bidirectional card reading and charging, which is more flexible and convenient to use.

[0013] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structural principle of a preferred embodiment of the present utility model.

[0015] Description of the accompanying drawings:

[0016] 10. USB A male connector 20. Circuit board

[0017] 21. MCU 22. TF SOC

[0018] 23. Power switch 24. Communication module

[0019] 25. First switch module 26. Second switch module

[0020] 27. Third switch module 30. Interface. DETAILED DESCRIPTION

[0021] Please refer to Figure 1 As shown, it shows the specific structure of a preferred embodiment of the present invention, including a USB A male connector 10 for inserting a TF card, an MCU 21, a TF SOC 22, a power switch 23, a communication module 24, a first switch module 25, a second switch module 26, a third switch module 27 and an interface 30.

[0022] The MCU 21 is model SC7015B and is electrically connected to the USB A male connector 10. The TF SOC 22 is electrically connected to the USB A male connector 10. The power switch 23 is electrically connected to the USB A male connector 10. The communication module 24 is electrically connected to the MCU 21 and the TF SOC 22. The first switch module 25 is electrically connected to the USB A male connector 10, the MCU 21, and the communication module 24. The second switch module 26 is electrically connected to the MCU 21 and the communication module 24. The third switch module 27 is electrically connected to the USB A male connector 10, the MCU 21, and the power switch 23. The device further includes a circuit board 20, on which the MCU 21, the TF SOC 22, the power switch 23, the communication module 24, the first switch module 25, the second switch module 26, and the third switch module 27 are all disposed.

[0023] The interface 30 electrically connects the power switch 23, the communication module 24, and the second switch module 26. In this embodiment, the interface 30 is a Type-C interface. The interface 30 and the USB A male connector 10 are respectively disposed at the two end edges of the circuit board 20 for electrical connection to the outside.

[0024] The working principle of this embodiment is described in detail as follows:

[0025] 1. The USB portion of USB A male connector 10 has a fast-charging function for charging port 30, but port 30 cannot charge USB A male connector 10. USB A male connector 10 also does not have a data function for charging port 30. The operating principle is as follows: MCU 21 controls third switch module 27, which in turn controls power switch 23 to charge USB A male connector 10 to port 30. MCU 21 identifies the charging protocol of port 30 and, through third switch module 27, controls power switch 23 to provide the fast-charging voltage and current corresponding to the protocol.

[0026] 2. The USB portion of the USB A male connector 10 reads the TF card connected to the USB A male connector 10, but the interface 30 is not connected to the data line (when the interface 30 is connected to the data line, there will be data conflicts and the card cannot be read). The working principle is as follows: When a TF card is inserted into the TF card slot of the USB A male connector 10 and the USB A male connector 10 is connected to the computer, the MCU 21 controls the first switch module 25 on and off. Through the first switch module 25, the communication module 24 is controlled, and the data line of the USB A male connector 10 is connected to the TF SOC 22. The USB portion of the USB A male connector 10 reads the data from the TF card portion of the USB A male connector 10.

[0027] 3. Interface 30 reads a TF card from USB A male connector 10. USB A male connector 10 is not connected to any device, but to an OTG-enabled phone. The operating principle is as follows: When a TF card is inserted into the TF card slot of USB A male connector 10 and an OTG-enabled phone is connected to interface 30, reverse power is drawn from the phone, enabling the chip on the PCB to operate. MCU 21 then switches second switch module 26 on and off, controlling communication module 24 through second switch module 26. The data line of interface 30 is connected to TF SOC 22, allowing the OTG-enabled phone to read data from the TF card.

[0028] The design focus of the present invention is that by providing an interface and a USB A male head for inserting a TF card, and coordinating with an MCU, a TF SOC, a power switch, a communication module, a first switch module, a second switch module and a third switch module, the present invention can adopt a USB A male head or interface for card reading, realize bidirectional card reading and charging, and is more flexible and convenient to use.

[0029] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bidirectional card reading charging control circuit structure, characterized by: It includes a USB A male connector for inserting a TF card, an MCU, a TF SOC, a power switch, a communication module, a first switch module, a second switch module, a third switch module and an interface; The MCU is electrically connected to the USB A male connector; the TF SOC is electrically connected to the USB A male connector; the power switch is electrically connected to the USB A male connector; the communication module is electrically connected to the MCU and the TF SOC; the first switch module is electrically connected to the USB A male connector, the MCU, and the communication module; the second switch module is electrically connected to the MCU and the communication module; the third switch module is electrically connected to the USB A male connector, the MCU, and the power switch; and the interface is electrically connected to the power switch, the communication module, and the second switch module.

2. The bidirectional card reading and charging control circuit structure according to claim 1, characterized in that: The interface is a Type-C interface.

3. The bidirectional card reading and charging control circuit structure according to claim 1, characterized in that: It further includes a circuit board, on which the MCU, TF SOC, power switch, communication module, first switch module, second switch module and third switch module are all arranged.

4. The bidirectional card reading and charging control circuit structure according to claim 3, characterized in that: The interface and the USB A male connector are respectively arranged at the two end edges of the circuit board.

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