CN217589597U - Memory card - Google Patents

Abstract

The utility model provides a memory card, which comprises a carrier plate, a first control chip, a flash memory chip, a detection unit, a packaging body, a first conductive contact group and a second conductive contact group, wherein the first control chip, the flash memory chip, the detection unit, the first conductive contact group and the second conductive contact group are respectively electrically connected with the carrier plate; the first control chip, the flash memory chip, the detection unit, the carrier plate, the first conductive contact set and the second conductive contact set are integrally packaged through a packaging body to form a storage card main body; at least one conductive contact in the second conductive contact group is electrically connected with the input end of the detection unit through the carrier plate; the first control chip comprises a first level detection pin, and the first level detection pin is electrically connected with the output end of the detection unit through the carrier plate. The utility model discloses an electronic equipment is installed to both accessible pull out the mode of inserting to the storage card, also can install electronic equipment through paster welding mode, has improved the flexibility that the storage card used.

Description

Memory card

Technical Field

The utility model relates to a storage device field, more specifically say, relate to a storage card.

Background

The memory is a storage unit for storing programs and various data information. Because of its advantages of small size and stable performance, memory cards are commonly used as independent storage media in mobile phones, digital cameras, portable computers, MP3 s and other electronic devices. As a removable memory, a memory card is usually connected to other devices in a pluggable manner.

Existing memory cards include SD cards, micro SD cards, CF cards, NM cards, eMMC cards, MS PRO cards, PCIe flash cards, and the like. Each type of memory card has a different shape and pin definition. Wherein the Micro SD card is a small memory card.

An eMMC (Embedded Multi Media Card) is a memory Card that integrates an eMMC control chip, a flash memory, and provides a standard interface. Because of the advantages of large storage capacity, automatic flash memory management (bad block processing, ECC), fast interface speed (up to 400MBytes per second), scalability, and the like, eMMC is widely used in electronic devices such as mobile phones. However, the conventional eMMC is packaged in a BGA manner and is fixed on a PCB by soldering when used, which results in that different memories of such devices cannot be replaced at will.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to above-mentioned eMMC because of adopting BGA encapsulation mode and leading to the unable problem of upgrading storage capacity easily of corresponding equipment, provide a new storage card.

The technical solution of the present invention for solving the above technical problems is to provide a memory card, which comprises a carrier plate, a first control chip, a flash memory chip, a detection unit, a package body, a first conductive contact set and a second conductive contact set, wherein the first control chip, the flash memory chip, the detection unit, the first conductive contact set and the second conductive contact set are electrically connected to the carrier plate respectively; the first control chip, the flash memory chip, the detection unit, the carrier plate, the first conductive contact set and the second conductive contact set are integrally packaged through the packaging body to form a memory card main body, the first conductive contact set is located at one edge of the memory card main body and is exposed out of the back face of the memory card main body, and the second conductive contact set is located in the center of the memory card main body and is exposed out of the back face of the memory card main body;

the first control chip comprises a first memory interface and a first input/output interface, and the first memory interface is electrically connected with the flash memory chip through the carrier plate; the first conductive contact piece set and the second conductive contact piece set are respectively electrically connected with the first input/output interface through the carrier plate, and at least one conductive contact piece in the second conductive contact piece set is electrically connected with the input end of the detection unit through the carrier plate; the first control chip comprises a first level detection pin, and the first level detection pin is electrically connected with the output end of the detection unit through the carrier plate.

As a further improvement of the present invention, the first input/output interface includes a first data terminal, a second data terminal, a third data terminal, a fourth data terminal, a fifth data terminal, a sixth data terminal, a seventh data terminal, an eighth data terminal, a first command terminal, a first power signal terminal, a first clock signal terminal, and a first ground signal terminal, and the first level detection pin is constituted by the first command terminal;

the first conductive contact set comprises a first data contact, a second data contact, a third data contact, a fourth data contact, a power signal contact, a command contact, a clock signal contact and a ground signal contact; the second conductive contact set comprises a fifth data contact piece, a sixth data contact piece, a seventh data contact piece and an eighth data contact piece, and any one of the fifth data contact piece, the sixth data contact piece, the seventh data contact piece and the eighth data contact piece is electrically connected with the first level detection pin;

the first data contact is electrically connected with a first data terminal through the carrier plate, the second data contact is electrically connected with a second data terminal through the carrier plate, the third data contact is electrically connected with a third data terminal through the carrier plate, the fourth data contact is electrically connected with a fourth data terminal through the carrier plate, the power signal contact is electrically connected with a first power signal terminal through the carrier plate, the command contact is electrically connected with a first command terminal through the carrier plate, the clock signal contact is electrically connected with a first clock signal terminal through the carrier plate, and the ground signal contact is electrically connected with a first ground signal terminal through the carrier plate; the fifth data contact is electrically connected with a fifth data terminal through the carrier plate, the sixth data contact is electrically connected with a sixth data terminal through the carrier plate, the seventh data contact is electrically connected with a seventh data terminal through the carrier plate, and the eighth data contact is electrically connected with an eighth data terminal through the carrier plate.

As a further improvement of the present invention, the length of the memory card main body is 15mm, the width of the memory card main body is 11mm, and the thickness of the memory card main body is 1mm;

the parts of the first data contact piece, the second data contact piece, the third data contact piece, the fourth data contact piece, the power signal contact piece, the command contact piece, the clock signal contact piece and the ground signal contact piece of the first conductive contact piece group, which are exposed out of the back face of the storage card main body, are distributed in the same mode as the metal contact piece of the Micro SD card, and the first control chip is a control chip integrated with a Micro SD card fixing piece and an eMMC card fixing piece.

As a further improvement, be provided with the voltage conversion circuit who converts the first voltage of input into second voltage and output on the support plate, the power signal contact via voltage conversion circuit is connected with first power signal terminal electricity.

As a further improvement, the parts of the back of the memory card main body that are exposed to the fifth data contact, the sixth data contact, the seventh data contact and the eighth data contact are distributed in two rows and two columns in the center of the back of the memory card main body.

As a further improvement of the present invention, the memory card includes a second control chip encapsulated in the memory card body; the second control chip comprises a second memory interface and a second input/output interface, the second memory interface is electrically connected with the flash memory chip through the carrier plate, and the second input/output interface is electrically connected with the first conductive contact set through the carrier plate; the second control chip comprises a second level detection pin, and the second level detection pin is electrically connected with the output end of the detection unit through the carrier plate.

As a further improvement of the present invention, the second input/output interface includes a ninth data terminal, a tenth data terminal, an eleventh data terminal, a twelfth data terminal, a second command terminal, a second power signal terminal, a second clock signal terminal, and a second ground signal terminal, and the second level detection pin is constituted by the second command terminal;

the ninth data terminal is electrically connected with the first data contact piece through the carrier plate, the tenth data terminal is electrically connected with the second data contact piece through the carrier plate, the eleventh data terminal is electrically connected with the third data contact piece through the carrier plate, the twelfth data terminal is electrically connected with the fourth data contact piece through the carrier plate, the second power signal terminal is electrically connected with the power signal contact piece through the carrier plate, the second command terminal is electrically connected with the command contact piece through the carrier plate, the second clock signal terminal is electrically connected with the clock signal contact piece through the carrier plate, and the second ground signal terminal is electrically connected with the ground signal contact piece through the carrier plate.

As a further improvement of the present invention, the length of the memory card main body is 15mm, the width of the memory card main body is 11mm, and the thickness of the memory card main body is 1mm;

the parts of the first data contact piece, the second data contact piece, the third data contact piece, the fourth data contact piece, the power signal contact piece, the command contact piece, the clock signal contact piece and the ground signal contact piece of the first conductive contact piece group, which are exposed out of the back face of the storage card main body, are distributed in the same mode as the metal contact piece of the Micro SD card, the first control chip is an eMMC card control chip, and the second control chip is a Micro SD card control chip.

As a further improvement of the present invention, the back of the memory card main body, the first conductive contact group and the distance between the second conductive contact groups is greater than or equal to 1.5mm.

The utility model discloses following beneficial effect has: through first conductive contact piece group and second conductive contact piece group for the storage card both can install electronic equipment through pulling out the mode of inserting, also can install electronic equipment through paster welding mode, thereby has improved the flexibility that the storage card used.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of a memory card provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of an electrical connection structure of a memory card according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a first control chip in a memory card according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a memory card according to an embodiment of the present invention, in which a first control chip is electrically connected to a conductive contact;

fig. 5 is a schematic diagram of the back side of a memory card provided by an embodiment of the present invention;

fig. 6 is a schematic diagram of power supply connection of a first control chip in the memory card according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the memory card according to another embodiment of the present invention, in which the first control chip and the second control chip are electrically connected to the conductive contact.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-5, the memory card according to the embodiment of the present invention is a schematic structural diagram, and the memory card can be applied to electronic devices such as a mobile phone, a digital camera, a portable computer, and an MP3, and realizes storage of corresponding data. The memory card of the embodiment includes a carrier 11, a first control chip 12, a flash memory chip 13, a first conductive contact set 14, a second conductive contact set 15, and a package, wherein the first control chip 12, the flash memory chip 13, a detection unit, the first conductive contact set 14, and the second conductive contact set 15 are electrically connected to the carrier 11, and the first control chip 12, the flash memory chip 13, the detection unit, the first conductive contact set 14, the second conductive contact set 15, and the carrier 11 are integrally packaged by the package to form a memory card main body 10. In addition, a plurality of passive components 16, such as resistors and capacitors, may be further packaged in the package, and the passive components 16 are respectively electrically connected to the carrier 11 and form a circuit together with the first control chip 12 and the flash memory chip 13 to implement functions of storage, security, and the like.

The Flash memory chip 13 may be specifically configured by a storage medium 131 such as NAND Flash, and the first control chip 12 is a controller of a memory card, and is used for providing a standard interface and managing memory cells in the Flash memory chip 13. In one embodiment of the present invention, the first control chip 12 and the flash memory chip 13 may be respectively formed of a die (die), and the surfaces thereof respectively have a plurality of bonding pads. In practical applications, the first control chip 12 and the flash memory chip 13 may be packaged together first. The carrier 11 is a lead frame (leadframe) for carrying the first control chip 12, the flash memory chip 13 and the passive component 16, and is mainly composed of a Substrate (specifically, a hard Substrate, a flexible film Substrate, a co-fired ceramic Substrate, etc.) and a copper foil (the thickness of which may be between 1.5 μm and 18 μm) on the Substrate, and the carrier 11 has a plurality of carrier pads electrically connected to each other through the copper foil. The carrier 11 not only can fix and conduct heat of the first control chip 12, the flash memory chip 13, and the passive component 16, but also can electrically connect the first control chip 12, the flash memory chip 13, and the passive component 16. Specifically, the first control chip 12 and the flash memory chip 13 are adhered to the surface of the carrier 11, and the Bonding pads are electrically connected to the carrier pads through a Wire Bonding (Wire Bonding) process, so as to realize the electrical connection between the flash memory chip 13 and the first control chip 12; the passive component 16 can be soldered directly to the surface of the carrier plate 11. The first control chip 12, the flash memory chip 13 and the passive element 16 can implement the related storage function of the memory card. The structure of the carrier 11, the first control chip 12, and the flash memory chip 13 and their electrical connection structure are well known in the art and will not be described herein.

The first control chip 12 specifically includes a core logic block 121, a first memory interface 122 and a first input/output interface 123, where the first memory interface 122 is electrically connected to the flash memory chip 13 via the carrier board 11 and is responsible for data signal transmission or control signal transmission with the flash memory chip 13 (storage medium 131); the first input/output interface 123 is responsible for providing a connection channel with the outside; the core logic block 121 is responsible for controlling the first memory interface 122 and the first input/output interface 123, so as to implement read/write control on the flash memory chip 13.

The first conductive contact set 14 is located at one edge of the memory card body and exposed out of the back of the memory card body, the second conductive contact set 15 is located at the center of the memory card body and exposed out of the back of the memory card body, and the first conductive contact set 14 and the second conductive contact set 15 are electrically connected to the first input/output interface 123 of the first control chip 12 through the carrier plate 11 respectively. In the present embodiment, the first conductive contact set 14 is composed of a plurality of metal contacts which are flush with the back surface of the memory card body 10 or protrude from the back surface of the memory card body 10; the second set of conductive contacts 15 is also formed by a plurality of metal contacts which are flush with the back surface of the memory card body 10 or protrude from the back surface of the memory card body 10. In practical applications, the metal contacts of the first conductive contact set 14 and the second conductive contact set 15 may be formed by copper-clad on the carrier 11, or may be formed by a metal sheet independent from the carrier 11 and electrically connected to the carrier 11. Through the first conductive contact group 14, the memory card can be electrically connected with the elastic sheet in the memory card slot, so that the plug-in connection between the memory card and the electronic equipment is realized, and the memory card can be welded to a circuit board of the electronic equipment together with the second conductive contact group 15 in a patch mode.

In the present embodiment, at least a portion of the passive components 16 are electrically connected through the carrier board 11 to form a detection unit 17, and specifically, the detection unit 17 includes a pull-down resistor RL and a detection circuit (the detection circuit can perform filtering, rising/falling/voltage processing, etc. on the voltage signal). At least one of the second set of conductive contacts 15 is electrically connected to an input of the detection unit 17 via the carrier plate 11. The first control chip 12 includes a first level detection pin, and the first level detection pin is electrically connected to the output terminal of the detection unit 17 via the carrier 11. When the conductive contact plate connected with the pull-down resistor RL is in idle connection, the pull-down resistor RL is always kept at a low potential; when the conductive contact connected with the pull-down resistor RL has a signal input, a high potential moment exists on the pull-down resistor RL. Accordingly, the first control chip 12 is a control chip integrated with a plurality of different memory card firmware (for example, a Micro SD card firmware and an eMMC card firmware are integrated at the same time), so that the first control chip 12 can perform read/write operations on the flash memory chip 13 by operating the firmware of different memory cards. For example, when the detecting unit 17 detects that the corresponding conductive contact in the second conductive contact set 15 is kept at a low level, the first control chip 12 will use one of the memory card firmware (e.g., micro SD card firmware) and perform read/write operations on the flash memory chip 13 through the first conductive contact set 14 according to the low level signal of the level detection pin; when the detecting unit 17 detects that the corresponding conductive contact in the second conductive contact set 15 has a high potential, the first control chip 12 uses another memory card firmware (e.g., eMMC card firmware) to perform read/write operations on the flash memory chip 13 through the first conductive contact set 14 and the second conductive contact set 15 according to the signal of the level detection pin.

According to the memory card, one application scene of the memory card is realized by independently using the first conductive contact set 14, and another application scene of the memory card is realized by simultaneously using the first conductive contact set 14 and the second conductive contact set 15, so that the use flexibility of the memory card is greatly improved.

In an embodiment of the present invention, the first input/output interface 123 includes a first data terminal, a second data terminal, a third data terminal, a fourth data terminal, a fifth data terminal, a sixth data terminal, a seventh data terminal, an eighth data terminal, a first command terminal, a first power signal terminal, a first clock signal terminal, and a first ground signal terminal, wherein the first level detection pin may be formed by the first command terminal. The first clock signal terminal is used for transmitting a clock signal from external equipment, and carrying out synchronization of data transmission and driving of equipment operation; the first command terminal is mainly used for sending a command signal to the core logic block 121 by an external device and sending a corresponding response signal to the external device by the core logic block 121; a first data terminal, a second data terminal, a third data terminal, a fourth data terminal, a fifth data terminal, a sixth data terminal, a seventh data terminal, and an eighth data terminal are mainly used for data transmission between the external device and the core logic block 121; the first power signal terminal and the first ground signal terminal are used for obtaining a power supply voltage from an external device.

Accordingly, the first conductive contact group 14 includes a first data contact DAT0, a second data contact DAT1, a third data contact DAT2, a fourth data contact DAT3, a power signal contact VCC, a command contact CMD, a clock signal contact CLK, and a ground signal contact GND. The second conductive contact group 15 includes fifth, sixth, seventh and eighth data contacts DAT4, DAT5, DAT6 and DAT7, and any one of the fifth, sixth, seventh and eighth data contacts DAT4, DAT5, DAT6 and DAT7 (e.g., the fifth data contact DAT 4) is electrically connected to the first level detection pin. Particularly, the parts of the fifth, sixth, seventh and eighth data pads DAT4, DAT5, DAT6 and DAT7 exposed to the back surface of the memory card body 10 are distributed in two rows and two columns at the center of the back surface of the memory card body 10.

And in the memory card body 10, the first data contact DAT0 is electrically connected to a first data terminal of the first control chip 12 via the carrier 11, the second data contact DAT1 is electrically connected to a second data terminal of the first control chip 12 via the carrier 11, the third data contact DAT2 is electrically connected to a third data terminal of the first control chip 12 via the carrier 11, the fourth data contact DAT3 is electrically connected to a fourth data terminal of the first control chip 12 via the carrier 11, the fifth data contact DAT4 is electrically connected to a fifth data terminal of the first control chip 12 via the carrier 11, the sixth data contact DAT5 is electrically connected to a fifth data terminal of the first control chip 12 via the carrier 11, the seventh data contact DAT6 is electrically connected to a seventh data terminal of the first control chip 12 via the carrier 11, the eighth data contact DAT7 is electrically connected to an eighth data terminal of the first control chip 12 via the carrier 11, the power signal contact is electrically connected to a first power signal terminal of the first control chip 12 via the carrier 11, the command contact is electrically connected to a first power signal terminal of the first control chip 12 via the clock signal terminal of the carrier 11, and the clock signal terminal of the first control chip 12 is electrically connected to GND.

In this way, the first conductive contact set 14 and the second conductive contact set 15 can respectively lead out each terminal of the first control chip 12, so that the memory card can be connected with the electronic device in different ways.

Preferably, as shown in fig. 5, the first data contact DAT0, the second data contact DAT1, the third data contact DAT2, the fourth data contact DAT3, the power signal contact VCC, the command contact CMD, the clock signal contact CLK, and the ground signal contact GND of the first conductive contact group 14 are arranged in a row at one edge of the back surface of the memory card main body 10. And, on the back of the memory card body 10, the distance d between the first conductive contact set 14 and the second conductive contact set 15 is greater than or equal to 1.5mm, thus reducing the risk of being touched by mistake.

Meanwhile, the length of the memory card main body 10 may be 15mm, the width thereof may be 11mm, and the thickness thereof may be 1mm, and the first data contact DAT0, the second data contact DAT1, the third data contact DAT2, the fourth data contact DAT3, the power signal contact VCC, the command contact CMD, the clock signal contact CLK, and the ground signal contact GND of the first conductive contact group 14 may be distributed on the back surface of the memory card main body 10 in the same manner as the metal contacts of the Micro SD card (the shape and size of each metal contact of the first conductive contact group 14 may be the same as those of the metal contacts of the Micro SD card). Accordingly, the first control chip 12 is a control chip integrated with a Micro SD card firmware and an eMMC card firmware. In this way, the memory card can be connected with the electronic equipment through the existing Micro SD card slot, and meanwhile, the memory card can be welded to the circuit board in a patch mode and can carry out data access through an eMMC protocol.

In view of the difference between the operating voltage of the first control chip 12 operating in the eMMC protocol mode and the operating voltage of the Micro SD card protocol mode, as shown in fig. 6, a voltage conversion circuit 111 is further disposed on the carrier board 11 of the memory, and the power signal contact VCC is electrically connected to the first power signal terminal of the first control chip 12 via the voltage conversion circuit 111. The voltage conversion circuit 111 can convert the first voltage (e.g., 3.3V) inputted from the power signal contact VCC into the second voltage (e.g., 1.8V) and output the second voltage to the corresponding portion of the first control chip 12 (the power signal contact VCC can also output the first voltage to other portions of the first control chip 12). Of course, in practical applications, the voltage converting circuit 111 may be integrated into the first control chip 12.

In another embodiment of the present invention, as shown in fig. 7, the memory card further includes a second control chip 18 packaged in the memory card body 10, in addition to the carrier 11, the first control chip 12, the flash memory chip 13, the first conductive contact set 14 and the second conductive contact set 15, and the package body. The second control chip 18 includes a second memory interface and a second input/output interface, and the second memory interface is electrically connected to the flash memory chip 13 via the carrier board 11, and the second input/output interface is electrically connected to the first conductive contact set 14 via the carrier board 11. The second control chip 18 further includes a second level detection pin, and the second level detection pin is electrically connected to the output terminal of the detection unit 17 via the carrier 11.

In one embodiment of the present invention, the first control chip 12 is an eMMC card control chip, and the second control chip 18 is a Micro SD card control chip. Thus, when the output of the detection unit 17 is always at a low level in the power-on starting stage of the memory card, the second control chip 18 enters a working state, the first control chip 12 enters a dormant state, and the memory card can be used as a Micro SD card; when the output of the detection unit 17 is high level at the power-on start-up stage of the memory card, the first control chip 12 enters a working state, and the second control chip 18 enters a sleep state, at which time the memory card can be used as an eMMC card.

Specifically, the second input/output interface includes a ninth data terminal, a tenth data terminal, an eleventh data terminal, a twelfth data terminal, a second command terminal, a second power signal terminal, a second clock signal terminal, and a second ground signal terminal, wherein the second level detection pin is formed by the second command terminal; and the ninth data terminal is electrically connected to the first data contact DAT0 via the carrier board 11, the tenth data terminal is electrically connected to the second data contact DAT1 via the carrier board 11, the eleventh data terminal is electrically connected to the third data contact DAT2 via the carrier board 11, the twelfth data terminal is electrically connected to the fourth data contact DAT3 via the carrier board 11, the second power signal terminal is electrically connected to the power signal contact VCC via the carrier board, the second command terminal is electrically connected to the command contact CMD via the carrier board, the second clock signal terminal is electrically connected to the clock signal contact CLK via the carrier board 11, and the second ground signal terminal is electrically connected to the ground signal contact GND via the carrier board 11.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A memory card is characterized by comprising a carrier plate, a first control chip, a flash memory chip, a detection unit, a packaging body, a first conductive contact set and a second conductive contact set, wherein the first control chip, the flash memory chip, the detection unit, the first conductive contact set and the second conductive contact set are respectively and electrically connected with the carrier plate; the first control chip, the flash memory chip, the detection unit, the carrier plate, the first conductive contact set and the second conductive contact set are integrally packaged through the packaging body to form a memory card main body, the first conductive contact set is located at one edge of the memory card main body and is exposed out of the back face of the memory card main body, and the second conductive contact set is located in the center of the memory card main body and is exposed out of the back face of the memory card main body;

the first control chip comprises a first memory interface and a first input/output interface, and the first memory interface is electrically connected with the flash memory chip through the carrier plate; the first conductive contact piece set and the second conductive contact piece set are respectively electrically connected with the first input/output interface through the carrier plate, and at least one conductive contact piece in the second conductive contact piece set is electrically connected with the input end of the detection unit through the carrier plate; the first control chip comprises a first level detection pin, and the first level detection pin is electrically connected with the output end of the detection unit through the carrier plate.

2. The memory card according to claim 1, wherein the first input/output interface includes a first data terminal, a second data terminal, a third data terminal, a fourth data terminal, a fifth data terminal, a sixth data terminal, a seventh data terminal, an eighth data terminal, a first command terminal, a first power signal terminal, a first clock signal terminal, and a first ground signal terminal, and the first level detection pin is constituted by the first command terminal;

the first conductive contact set comprises a first data contact, a second data contact, a third data contact, a fourth data contact, a power signal contact, a command contact, a clock signal contact and a ground signal contact; the second conductive contact set comprises a fifth data contact piece, a sixth data contact piece, a seventh data contact piece and an eighth data contact piece, and any one of the fifth data contact piece, the sixth data contact piece, the seventh data contact piece and the eighth data contact piece is electrically connected with the first level detection pin;

the first data contact is electrically connected with a first data terminal through the carrier plate, the second data contact is electrically connected with a second data terminal through the carrier plate, the third data contact is electrically connected with a third data terminal through the carrier plate, the fourth data contact is electrically connected with a fourth data terminal through the carrier plate, the power signal contact is electrically connected with a first power signal terminal through the carrier plate, the command contact is electrically connected with a first command terminal through the carrier plate, the clock signal contact is electrically connected with a first clock signal terminal through the carrier plate, and the ground signal contact is electrically connected with a first ground signal terminal through the carrier plate; the fifth data contact is electrically connected with a fifth data terminal through the carrier plate, the sixth data contact is electrically connected with a sixth data terminal through the carrier plate, the seventh data contact is electrically connected with a seventh data terminal through the carrier plate, and the eighth data contact is electrically connected with an eighth data terminal through the carrier plate.

3. The memory card of claim 2, wherein the length of the memory card body is 15mm, the width of the memory card body is 11mm, and the thickness of the memory card body is 1mm;

the parts of the first data contact piece, the second data contact piece, the third data contact piece, the fourth data contact piece, the power signal contact piece, the command contact piece, the clock signal contact piece and the ground signal contact piece of the first conductive contact piece group, which are exposed out of the back face of the storage card main body, are distributed in the same mode as the metal contact piece of the Micro SD card, and the first control chip is a control chip integrated with a Micro SD card fixing piece and an eMMC card fixing piece.

4. The memory card of claim 3, wherein the carrier board is provided with a voltage conversion circuit for converting an input first voltage into a second voltage and outputting the second voltage, and the power signal contacts are electrically connected to the first power signal terminals via the voltage conversion circuit.

5. The memory card of claim 4, wherein the portions of said fifth, sixth, seventh and eighth data contacts exposed at the back of said memory card body are arranged in two rows and two columns at the center of the back of said memory card body.

6. The memory card of claim 2, wherein the memory card includes a second control chip packaged within the memory card body; the second control chip comprises a second memory interface and a second input/output interface, the second memory interface is electrically connected with the flash memory chip through the carrier plate, and the second input/output interface is electrically connected with the first conductive contact set through the carrier plate; the second control chip comprises a second level detection pin, and the second level detection pin is electrically connected with the output end of the detection unit through the carrier plate.

7. The memory card according to claim 6, wherein the second input/output interface includes a ninth data terminal, a tenth data terminal, an eleventh data terminal, a twelfth data terminal, a second command terminal, a second power signal terminal, a second clock signal terminal, and a second ground signal terminal, and the second level detection pin is constituted by the second command terminal;

the ninth data terminal is electrically connected with the first data contact piece through the carrier plate, the tenth data terminal is electrically connected with the second data contact piece through the carrier plate, the eleventh data terminal is electrically connected with the third data contact piece through the carrier plate, the twelfth data terminal is electrically connected with the fourth data contact piece through the carrier plate, the second power signal terminal is electrically connected with the power signal contact piece through the carrier plate, the second command terminal is electrically connected with the command contact piece through the carrier plate, the second clock signal terminal is electrically connected with the clock signal contact piece through the carrier plate, and the second ground signal terminal is electrically connected with the ground signal contact piece through the carrier plate.

8. The memory card of claim 7, wherein the length of the memory card body is 15mm, the width of the memory card body is 11mm, and the thickness of the memory card body is 1mm;

the parts of the first data contact piece, the second data contact piece, the third data contact piece, the fourth data contact piece, the power signal contact piece, the command contact piece, the clock signal contact piece and the ground signal contact piece of the first conductive contact piece group, which are exposed out of the back face of the storage card main body, are distributed in the same mode as the metal contact piece of the Micro SD card, the first control chip is an eMMC card control chip, and the second control chip is a Micro SD card control chip.

9. The memory card of any one of claims 1-8, wherein a distance between the first set of conductive contacts and the second set of conductive contacts is greater than or equal to 1.5mm at a back side of the memory card body.

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