CN217213726U - Memory card and electronic device - Google Patents

Abstract

The application discloses a memory card and electronic equipment, wherein the memory card comprises a pair of differential data input terminals for inputting differential data to the memory card; a pair of differential data output terminals for causing the memory card to output differential data, and a power supply terminal for supplying power; a clock terminal for transmitting a clock signal; a first ground terminal for grounding; and the second grounding terminal is grounded through the first resistor or connected with the grounding terminal of the main controller and is used for transmitting a detection signal to the memory card, and the detection signal is used for detecting the transmission protocol type of the memory card. The memory card of the embodiment of the application has higher reading and writing speed, can avoid the situation of being mistakenly identified as the e-NM card in the using process, and has higher identification accuracy.

Description

Memory card and electronic device

Technical Field

The application relates to the technical field of storage devices, in particular to a storage card and electronic equipment.

Background

A conventional general protocol of the NM Card (Nano Memory Card) 100 is an emmc (embedded Multi Media Card) transmission protocol, hereinafter referred to as an e-NM Card, and includes 8 terminals, and interfaces of the 8 terminals are defined as shown in fig. 1, and respectively include a data terminal 1(DAT1)11, a command terminal (COM)12, a ground terminal (GND)13, a data terminal 3(DAT3)14, a data terminal 2(DAT2)15, a power terminal (VCC)16, a data terminal 0(DAT0)17, and a clock terminal (CLK) 18.

Compared with a Micro SD (Secure Digital Memory Card) storage Card, the e-NM Card has the volume reduced by 45 percent and almost completely has the same specification as a Nano SIM Card. Although the e-NM card has an advantage in size, the e-NM card has a reading speed about one third of that of a memory card of UFS (Universal Flash Storage) transmission protocol, and a writing speed inferior to that of the e-NM card. Therefore, there is a need for further improvements in the read and write speed of existing e-NM cards.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a memory card and an electronic device to solve the problem of low read/write speed of the existing e-NM card.

An embodiment of the present application provides a memory card, including: a pair of differential data input terminals for inputting differential data to the memory card, the pair of differential data input terminals including a first differential data input terminal and a second differential data input terminal; a pair of differential data output terminals for causing the memory card to output differential data, the pair of differential data output terminals including a first differential data output terminal and a second differential data output terminal; the power supply terminal is used for supplying power; a clock terminal for transmitting a clock signal; a first ground terminal for grounding; and the second grounding terminal is grounded through the first resistor or connected with the grounding terminal of the main controller and is used for transmitting a detection signal to the memory card, and the detection signal is used for detecting the transmission protocol type of the memory card.

Optionally, the memory card and an NM card of the eMMC transmission protocol have the same shape and size; the arrangement positions of the first differential data input terminal, the second differential data input terminal, the first differential data output terminal, the second differential data output terminal, the power supply terminal, the clock terminal, the first ground terminal, and the second ground terminal on the memory card correspond to the arrangement positions of the 8 terminals on the NM card.

Optionally, the first differential data input terminal and the second differential data input terminal are arranged adjacently; the first differential data output terminal is disposed adjacent to the second differential data output terminal.

An embodiment of the present application further provides an electronic device, including: a card slot for loading a Nano SIM card, an NM card or a memory card of the above embodiments; the card slot comprises a target terminal, the target terminal is connected with a first power supply voltage through a second resistor, and the second resistor is larger than the first resistor; and the first detection module is used for detecting the voltage of the target terminal and identifying the type of the card loaded in the card slot according to the detected voltage of the target terminal.

Optionally, the first detecting module is configured to identify a card loaded in the card slot as an NM card when it is detected that the voltage of the target terminal is equal to the first power supply voltage.

Optionally, the first detecting module is configured to, when detecting that the voltage of the target terminal is less than or equal to a preset voltage threshold, identify the card loaded in the card slot as the Nano SIM card or the memory card; wherein the preset voltage threshold is less than the first power supply voltage.

Optionally, the card slot further includes a data input terminal and a data output terminal, where the data output terminal is used to input an initialization instruction to a card in the card slot, and the data input terminal is used to receive feedback information of the card in the card slot; the electronic equipment further comprises a second detection module, and the second detection module is used for identifying the card loaded in the card slot as the Nano SIM card or the storage card according to the feedback information.

Optionally, the first detection module includes a detection circuit and a response circuit; the detection circuit is used for detecting the voltage of the target terminal; the response circuit is used for outputting a second power supply voltage or a third power supply voltage according to the detected voltage of the target terminal, wherein the second power supply voltage is larger than the third power supply voltage.

Optionally, the detection circuit includes a third resistor, a fourth resistor, a fifth resistor, a diode, a capacitor, and a first triode; the anode of the diode is connected with the target terminal through the third resistor, and the cathode of the diode is grounded through the capacitor; one end of the fourth resistor is connected with the anode of the diode, and the other end of the fourth resistor is grounded; the base electrode of the first triode is connected with the target terminal through the fifth resistor, the emitting electrode of the first triode is connected with the negative electrode of the diode, and the collecting electrode of the first triode is connected with the response circuit.

Optionally, the response circuit includes a second triode and a sixth resistor; the base electrode of the second triode is connected with the collector electrode of the first triode through the sixth resistor, the collector electrode of the second triode is connected with the second power voltage, and the emitting electrode of the second triode is grounded.

The memory card of the embodiment of the application comprises a pair of differential data input terminals, a pair of data input terminals and a pair of data output terminals, wherein the differential data input terminals are used for inputting differential data to the memory card; a pair of differential data output terminals for causing the memory card to output differential data, and a power supply terminal for supplying power; a clock terminal for transmitting a clock signal; a first ground terminal for grounding; and the second grounding terminal is grounded through the first resistor or connected with the grounding terminal of the main controller and is used for transmitting a detection signal to the memory card, and the detection signal is used for detecting the transmission protocol type of the memory card. In the memory card of the embodiment of the application, differential serial transmission is used for data signal transmission, wherein the serial transmission can use a faster clock; the differential signal may represent 0 or 1 by a level difference between two signal lines. If there is interference in the transmission process, the two lines are added with interference levels with almost the same size, and the two lines are subtracted, the difference value is almost unchanged, so that the anti-interference capability is strong, a wider bandwidth can be provided, and the read-write speed of the memory card is improved. In addition, the second grounding terminal is grounded or connected with the grounding terminal of the main controller after being connected with the first resistor in series, a circuit of the memory card is accessed, a target terminal connected with a high level can be adopted to detect the second grounding terminal during application, and when the target terminal is contacted with the second grounding terminal, the potential of the target terminal can be reduced due to the voltage division effect of the first resistor, so that the memory card can be identified, the situation that the second grounding terminal is mistakenly identified as an e-NM card when being suspended can not occur, and the identification accuracy of the card is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a conventional e-NM card;

FIG. 2 is a schematic diagram of a U-NM card according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a connection and a detection of a second ground terminal of a U-NM card according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a prior art Nano SIM card;

fig. 6 is a schematic circuit structure diagram of a first detection module of an electronic device according to the present application.

Detailed Description

The technical solutions of the present application are described below clearly and completely by way of examples, and it is obvious that the described examples are only some examples of the present application, but not all examples. The following embodiments and their technical features may be combined with each other without conflict.

Although the existing e-NM card has the advantage of size, compared with a Micro SD memory card, the read-write speed is slower, so that the embodiment of the application provides a new memory card to improve the read-write speed of the existing e-NM card.

Fig. 2 shows a schematic structural diagram of a memory card 200 according to an embodiment of the present application, where the memory card 200 includes: a pair of differential data input terminals (a first differential data input terminal 21 and a second differential data input terminal 22), a pair of differential data output terminals (a first differential data output terminal 28 and a second differential data output terminal 27), a first ground terminal 23, a second ground terminal 24, a clock terminal 25, and a power supply terminal 26. A pair of differential data input terminals for inputting differential data to the memory card 200, and a pair of differential data output terminals for causing the memory card 200 to output differential data; the power supply terminal 26 is used for supplying power; a clock terminal 25 for transmitting a clock signal; a first ground terminal 23 for grounding; the second ground terminal 24, in one embodiment, may be connected directly to ground after being connected in series with the first resistor R1, as shown in fig. 3. In another embodiment, the second ground terminal 24 may also be connected in series with a first resistor R1 to a ground terminal of a host controller (not shown in fig. 3) of the memory card 200. The second ground terminal 24 is used to transmit a detection signal, which can detect the transmission protocol type of the memory card 200, to the memory card 200.

In the memory card 200 provided in the embodiment of the present application, differential serial transmission is used for data signal transmission, which is the basis of high-speed transmission, and all high-speed transmission buses, such as SATA, PCIe, and SAS, are serial differential signals. Where serial transmission may use a faster clock (clock information may be embedded in the data stream); the differential signal may represent 0 or 1 by a level difference between two signal lines. If interference exists in the transmission process, the two lines are added with interference levels with the same size, the two lines are subtracted, and the difference value is almost unchanged. However, the eMMC transmission protocol is single-ended parallel data transmission, and the parallel transmission speed is limited because the interference becomes large once the clock signal speed is too fast. Compared with single-ended signal transmission, the differential signal has strong anti-interference capability and can provide wider bandwidth, thereby improving the read-write speed of the memory card 200. The memory card 200 provided in the embodiment of the present application is a memory card supporting the UFS transport protocol.

It should be noted that, in the memory card 200 of the embodiment of the present application, the second ground terminal 24 may be floating, and since the terminal at the corresponding position on the e-NM card 100 is the data terminal 3(DAT3)14, which is connected to high level, it is possible to distinguish whether the card inserted into the card slot of the electronic device is the memory card 200 of UFS protocol or the e-NM card 100 by the floating second ground terminal 24 and the DAT 314. However, when there is a disconnection between the DAT314 of the e-NM card 100 and the internal circuit of the e-NM card 100, i.e., the DAT314 appears as a floating state, the e-NM card 100 is mistakenly recognized as a memory card of the UFS protocol. In the embodiment of the present application, the second ground terminal 24 is connected in series with the resistor R1 and then grounded or connected to the ground terminal of the host controller, and the circuit of the memory card is accessed, and the target terminal 411 connected to a high level can be used to detect the second ground terminal 24, as shown in fig. 3, when the target terminal 411 contacts the second ground terminal 24, the potential of the target terminal 411 will drop due to the voltage division effect of R1, so that the memory card 200 of the embodiment of the present application can be identified, the situation of misjudgment when the second ground terminal 24 is suspended will not occur, and the accuracy of card identification is improved.

In one embodiment, the memory card 200 is the same in shape and size as the e-NM card 100, and the set positions of the first differential data input terminal 21, the second differential data input terminal 22, the first differential data output terminal 28, the second differential data output terminal 27, the power terminal 26, the clock terminal 25, the first ground terminal 23, and the second ground terminal 24 correspond one-to-one to the set positions of DAT 111, COM 12, CLK 18, DAT 017, VCC 16, DAT 215, GND 13, and DAT314, respectively, as shown in fig. 1 and 2. For example, the memory card 200 of the embodiment of the present application may adopt the external dimensions of an existing e-NM card 100, with a length of 8.8mm, a width of 12.3mm and a thickness of 0.84 mm.

The memory card 200 of the embodiment of the present application has the same outer dimensions as the e-NM card 100, and the positions of the terminals are also in one-to-one correspondence as described above, so that the memory card can be compatible with a card slot on an existing electronic device. It should be noted that the terminal installation position in fig. 1 and fig. 2 is only one embodiment, and is not meant to limit the present application. For example, the positions of GND 13 and DAT314 on the e-NM card 100 may be interchanged, and accordingly, the first ground terminal 23 and the second ground terminal 24 on the memory card 200 are interchanged; for another example, the positions of CLK 18 and DAT 017 on the e-NM card 100 may be interchanged, and accordingly, the positions of the first differential data output terminal 28 and the second differential data output terminal 27 on the memory card 200 are interchanged, so as to ensure the compatibility of the card slot with the e-NM card 100 and the memory card 200.

In one embodiment, the first differential data input terminal 21 and the second differential data input terminal 22 are disposed adjacent to each other, so that the transmission environment of the first differential data input terminal 21 and the second differential data input terminal 22 is similar, and the memory card 200 can obtain a more accurate input signal. The first differential data output terminal 28 and the second differential data output terminal 27 are disposed adjacent to each other, so that the transmission environments of the first differential data output terminal 28 and the second differential data output terminal 27 are similar, and the memory card 200 can output a more accurate output signal.

The embodiment of the present application further provides an electronic device 400, as shown in fig. 4, including a card slot 41 and a first detection module 42. The card slot 41 may be loaded with a Nano SIM card (hereinafter referred to as SIM card) 300, an e-NM card 100 or a memory card (hereinafter referred to as U-NM card) 200 according to the above embodiments of the present application. It should be noted that the SIM card 300 has the same shape and size as the e-NM card 100 and the U-NM card 200, but includes only 6 terminals, and the terminal arrangement of the SIM card 300 corresponding to the embodiment of fig. 1 and 2 is shown in fig. 5, where the 6 terminals are: an input/output terminal (I/O)31, a program voltage terminal (VPP)32, a ground terminal (GND)33, a clock terminal (CLK)34, a reset terminal (RST)35, and a power supply voltage terminal (VCC) 36.

The card slot 41 includes a target terminal 411, and the first detection module 42 is connected to the target terminal 411. Referring to fig. 3 and 4, the target terminal 411 is connected to the first power voltage V1 through a second resistor R2, and the second resistor R2 is larger than the first resistor R1. In one embodiment, the second resistor R2 is much larger than the first resistor R1, R1 is used for voltage division. For example, the second resistor R2 is 50 times, 100 times or 150 times the first resistor R1, and so on, as an example, R1 may be 5K, and R2 may be 470K. In one embodiment, the first power supply voltage V1 is high, for example, the first power supply voltage V1 may be the supply voltage VCC. The first detection module 42 is connected to the target terminal 411, and detects a voltage of the target terminal 411 and identifies a type of a card loaded in the card slot 41 according to the detected voltage.

Specifically, when the e-NM card 100 is inserted into the card slot 41, since the terminal to which the target terminal 411 contacts is the DAT314, which is connected to a high level, the voltage of the target terminal 411 does not change. That is, when the first detection module 42 detects that the voltage of the target terminal 411 is equal to the first power supply voltage V1, it is possible to recognize the card loaded in the card slot as an NM card. When the U-NM card 200 or the SIM card 300 is inserted into the card slot 41, since the terminal contacted by the target terminal 411 is the second ground terminal 24 of the U-NM card 200 or the ground terminal (GND)33 of the SIM card 300, the voltage of the target terminal 411 detected by the first detecting module 42 will drop below the preset voltage threshold, which is understood to be smaller than the first power voltage V1. Accordingly, when the first detection module 42 detects that the voltage of the target terminal 411 is less than or equal to the preset voltage threshold, the card loaded in the card slot 41 is identified as the SIM card 300 or the U-NM card 200.

The electronic device 400 according to the embodiment of the application includes a card slot 41 and a first detection module 42, wherein the target terminal 411 is disposed in the card slot, and the target terminal 411 is connected to a first power voltage V1 through a second resistor R2, the first detection module 42 is connected to the target terminal 411, and detects the voltage of the target terminal 411, and identifies the type of a card loaded in the card slot 41 according to the voltage detected by the first detection module 42. In particular, for the U-NM card 200, the second ground terminal 24 is grounded after being connected in series with R1, and the target terminal 411 of the electronic device 400 is connected to the first power voltage V1 through the second resistor R2, when the target terminal 411 contacts the second ground terminal 24, the potential of the target terminal 411 will drop due to the voltage division of R1, so that the U-NM card 200 can be recognized, and compared with the design that the second ground terminal 24 of the U-NM card 200 is suspended, the scheme does not have the situation that the U-NM card 200 is falsely detected as the e-NM card 100, and improves the card recognition accuracy.

In one embodiment, referring to fig. 4, the card slot 41 may further include a data input terminal 412 and a data output terminal 413, the data output terminal 413 being used to input an initialization instruction to the card in the card slot 41, and the data input terminal 412 being used to receive feedback information of the card in the card slot 41. The electronic device 400 further comprises a second detection module 43, wherein the second detection module 43 is respectively connected to the data input terminal 412 and the data output terminal 413, and is configured to identify whether the card loaded in the card slot is the SIM card 300 or the U-NM card 200 according to the feedback information.

For example, when the U-NM card 200 is inserted into the card slot 41, the second detection module 43 sends a UFS protocol initialization command through the data output terminal 413, the UFS protocol initialization command is input into the U-NM card 200 through the first differential data input terminal 21 and the second differential data input terminal 22 of the U-NM card 200, the U-NM card 200 performs initialization according to the initialization command, and generates corresponding feedback information, for example, the feedback information may be initialization completion. The U-NM card 200 sends corresponding feedback information through the first differential data output terminal 28 and the second differential data output terminal 27, and the second detection module 43 receives the feedback information through the data input terminal 412 and identifies the card loaded in the card slot as the U-NM card 200 according to the feedback information.

For example, when the SIM card 300 is inserted into the card slot 41, the second detection module 43 sends an UFS protocol initialization command through the data output terminal 413, the UFS protocol initialization command is input to the SIM card 300 through the input/output terminal (I/O)31 of the SIM card 300, the SIM card 300 cannot perform initialization according to the initialization command, and generates corresponding feedback information, for example, the feedback information may be initialization failure. The SIM card 300 sends corresponding feedback information through an input/output terminal (I/O)31, and the second detection module 43 receives the feedback information through a data input terminal 412, and identifies the card loaded in the card slot as the SIM card 300 according to the feedback information.

The electronic device 400 of the above embodiment of the present application further includes the second detection module 43, and the card slot 41 further includes a data input terminal 412 and a data output terminal 413. When the first detection module 42 determines that the card loaded in the card slot 41 is the SIM card 300 or the U-NM card 200 by detecting the voltage of the target terminal 411, it may further determine which card is specifically determined by the second detection module 43, the data input terminal 412 and the data output terminal 413, specifically, the second detection module 43 sends an initialization instruction to the card in the card slot 41 through the data output terminal 413 and receives feedback information sent by the card in the card slot 41 through the data input terminal 412, and the second detection module 43 determines the type of the card in the card slot 41 according to the feedback information. In one embodiment, the second detecting module 43 is further connected to the first detecting module 42, and when the first detecting module 42 detects that the card in the card slot 41 is the U-NM card 200, the second detecting module 43 may send feedback information to the second detecting module 43, and the second detecting module 43 does not need to send an initialization instruction to the U-NM card 200 according to the feedback information. To simplify the program decision logic.

In one embodiment, the first detection module 42 may include a detection circuit 421 and a response circuit 422; the detection circuit 421 is for detecting the voltage of the target terminal 411; the response circuit 422 is configured to output a second power supply voltage or a third power supply voltage according to the detected voltage of the target terminal 411, the second power supply voltage being greater than the third power supply voltage. In one embodiment, when the detection circuit 421 detects that the voltage of the target terminal 411 is the first power supply voltage V1, the response circuit 422 outputs the second power supply voltage to determine that the card in the card slot 41 is the e-NM card 100 according to the second power supply voltage, and when the detection circuit 421 detects that the voltage of the target terminal 411 is less than or equal to a preset voltage threshold, the response circuit 422 outputs the third power supply voltage to determine that the card in the card slot 41 is the SIM card 300 or the U-NM card 200 according to the third power supply voltage.

In one embodiment, the first detection module 42 includes a detection circuit 421 and a response circuit 422 as shown in FIG. 6. The detection circuit 421 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a diode D1, a capacitor C1, and a first transistor Q1; the anode of the diode D1 is connected to the target terminal 411 through a third resistor R3, and the cathode of the diode D1 is connected to the GND1 through a capacitor C1; one end of the fourth resistor R4 is connected with the anode of the diode D1, and the other end is grounded GND 1; the base b1 of the first transistor Q1 is connected to the target terminal 411 through a fifth resistor R5, the emitter e1 of the first transistor Q1 is connected to the negative terminal of the diode D1, and the collector c1 of the first transistor Q1 is connected to the response circuit 402. In one embodiment, the response circuit 402 includes a second transistor Q2 and a sixth resistor R6; a base b2 of the second transistor Q2 is connected to a collector c1 of the first transistor Q1 through a sixth resistor R6, a collector c2 of the second transistor Q2 is connected to the second power voltage V2, and an emitter e2 of the second transistor Q2 is grounded to GND 2.

The working principle of the first detection module 42 in the above embodiment of the present application is: when the card loaded in the card slot 41 is the e-NM card 100, the terminal contacted by the target terminal 411 is the DAT314, and the terminal is at a high level, so that the voltage of the target terminal 411 does not decrease, i.e., is maintained at the first power voltage V1, and at this time, the potential of the base b1 of the first transistor Q1 in the detection circuit 421 is greater than the potential of the emitter e1, and the first transistor Q1 is not turned on. Output from the output (output) of the response circuit 402 is a second supply voltage V2. Accordingly, when the response circuit 402 outputs the second power supply voltage V2, the card in the card slot 41 can be identified as the e-NM card 100. When the card loaded in the card slot 41 is the U-NM card 200 or the SIM card 300, the terminal contacted by the target terminal 411 is a ground terminal, and when the voltage of the target terminal 411 is reduced to be less than or equal to a preset voltage threshold value due to the voltage division effect of the card in the card slot 41, the potential of the base b1 of the first triode is made to be less than the potential of the emitter e1, the first triode Q1 is turned on, and the potential of the base b2 of the second triode Q2 is made to be greater than the potential of the emitter e2, so that the second triode Q2 is also turned on, and the output end of the second triode Q2 outputs the third power voltage V3. Since the output terminal of the second transistor Q2 is directly connected to ground, the third power supply voltage V3 may be 0 voltage or a voltage close to 0, such as 0.05V. Accordingly, when the response circuit 402 outputs the third power supply voltage V3, the card in the card slot 41 can be identified as the U-NM card 200 or the SIM card 300. Thereafter, the U-NM card 200 and the SIM card 300 may be further identified according to the second detection module 43.

The first detection module 42 of the above embodiment of the present application includes the detection circuit 421 and the response circuit 422, the number of elements used by the detection circuit 421 and the response circuit 422 is small, the control and judgment logic is simple, the type of the card in the card slot 41 can be identified, even if the second ground terminal 24 of the U-NM card 200 is designed to be floating, the situation that the U-NM card 200 is erroneously detected as the e-NM card 100 does not occur in the first detection module 42 of this embodiment, and the card identification accuracy is improved.

The above description is only for the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent structures made by using the contents of the specification and the drawings of the present application, such as the combination of technical features between the embodiments, or the direct or indirect application to other related technical fields, are also included in the scope of the present application.

Claims (8)

1. A memory card, comprising:

a pair of differential data input terminals for inputting differential data to the memory card, the pair of differential data input terminals including a first differential data input terminal and a second differential data input terminal;

a pair of differential data output terminals for causing the memory card to output differential data, the pair of differential data output terminals including a first differential data output terminal and a second differential data output terminal;

the power supply terminal is used for supplying power;

a clock terminal for transmitting a clock signal;

a first ground terminal for grounding;

and the second grounding terminal is grounded through the first resistor or connected with the grounding terminal of the main controller and is used for transmitting a detection signal to the memory card, and the detection signal is used for detecting the transmission protocol type of the memory card.

2. The memory card of claim 1, wherein the memory card is the same shape and size as an NM card of an eMMC transmission protocol;

the arrangement positions of the first differential data input terminal, the second differential data input terminal, the first differential data output terminal, the second differential data output terminal, the power supply terminal, the clock terminal, the first ground terminal, and the second ground terminal on the memory card correspond to the arrangement positions of the 8 terminals on the NM card.

3. The memory card according to claim 2, wherein the first differential data input terminal is disposed adjacent to the second differential data input terminal;

the first differential data output terminal and the second differential data output terminal are disposed adjacent to each other.

4. An electronic device, comprising:

a card slot for loading a Nano SIM card, an NM card or a memory card according to any of claims 1-3; the card slot comprises a target terminal, the target terminal is connected with a first power supply voltage through a second resistor, and the second resistor is larger than the first resistor;

the first detection module is used for detecting the voltage of the target terminal and identifying the type of the card loaded in the card slot according to the detected voltage of the target terminal;

the first detection module is configured to identify a card loaded in the card slot as the Nano SIM card or the memory card when detecting that the voltage of the target terminal is less than or equal to a preset voltage threshold; wherein the preset voltage threshold is less than the first power supply voltage;

the card slot further comprises a data input terminal and a data output terminal, wherein the data output terminal is used for inputting an initialization instruction to a card in the card slot, and the data input terminal is used for receiving feedback information of the card in the card slot;

the electronic equipment further comprises a second detection module, wherein the second detection module is used for identifying the card loaded in the card slot as the Nano SIM card or the storage card according to the feedback information;

and when the feedback information is initialization completion, the second detection module identifies the card loaded in the card slot as the storage card.

5. The electronic apparatus according to claim 4, wherein said first detecting module is configured to identify the card loaded in said card slot as an NM card when detecting that the voltage of said target terminal is equal to said first power supply voltage.

6. The electronic device of claim 4 or 5, wherein the first detection module comprises a detection circuit and a response circuit;

the detection circuit is used for detecting the voltage of the target terminal;

the response circuit is used for outputting a second power supply voltage or a third power supply voltage according to the detected voltage of the target terminal, wherein the second power supply voltage is larger than the third power supply voltage.

7. The electronic device of claim 6, wherein the detection circuit comprises a third resistor, a fourth resistor, a fifth resistor, a diode, a capacitor, and a first transistor;

the anode of the diode is connected with the target terminal through the third resistor, and the cathode of the diode is grounded through the capacitor;

one end of the fourth resistor is connected with the anode of the diode, and the other end of the fourth resistor is grounded;

the base electrode of the first triode is connected with the target terminal through the fifth resistor, the emitting electrode of the first triode is connected with the negative electrode of the diode, and the collecting electrode of the first triode is connected with the response circuit.

8. The electronic device of claim 7, wherein the response circuit comprises a second transistor and a sixth resistor;

the base electrode of the second triode is connected with the collector electrode of the first triode through the sixth resistor, the collector electrode of the second triode is connected with the second power voltage, and the emitting electrode of the second triode is grounded.

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