KR100745514B1 - IC Card - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card, wherein a multifunction IC card (MFC) is a multimedia card and an SD card in terms of a zigzag two-row arrangement of connector terminals # 1 to # 13 with respect to the card substrate 1. The memory card unit 3 and the SIM (Subscriber Identity Module) card unit 4 are each connected to a predetermined terminal of the connector terminals # 1 to # 13 exclusively and are mounted in a multi-point structure. Realize the function function.

The memory card unit 3 and the SIM card unit 4 each have a separate storage area for a secret code for security. As a result, a multifunction function having a different security level can be realized in one IC card. By employing the arrangement of the connector terminals, a plurality of rows arranged in the form represented by the zig-zag shape are used to correspond to the zig-zag-shaped portion in the card slot, thereby alternately changing the protruding amounts of the slot terminals, and arranging the slot terminals in parallel in line. A relatively simple configuration can be adopted.

Description

IC card {IC CARD}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to maintaining compatibility and expanding functions in an IC card. For example, the present invention relates to a technology useful for applying to an IC card that realizes multi-bank or multi-function while maintaining compatibility with a multimedia card.

For the purpose of information transfer between a cellular phone and a digital network device, etc., a memory card that realizes small size, light weight and simplicity of interface such as a multimedia card is provided. The multimedia card has seven connector terminals as external interface terminals, as described in, for example, an interface issued by CQ Publishing Company (December 1999), a serial interface is adopted, and a PC card and a hard disk are employed. Compared to the ATA interface, the load on the host system can be reduced, and the system can be used as an easier system. The same document also describes that an SD card has been proposed as a serial compatible memory card of a multimedia card, employing a serial interface, having nine connector terminals.

MEANS TO SOLVE THE PROBLEM This inventor examined the function expansion of storage-type IC cards, such as a multimedia card. As a result, the present inventor first applied for an invention that enables expansion of functions such as providing an extension terminal and increasing the number of data bits while maintaining compatibility with standardized terminal arrangements such as a multimedia card. (Japanese Patent Application 2000) -18030) Furthermore, the present inventors have considered the realization of a multibank or a multifunction using such an extension terminal. For example, in a GSM (Group Special Mobile) mobile communication system using a subscriber identity module (SIM) of an IC card, the SIM card stores subscriber information, billing information, etc. necessary for the approval and management of subscribers for security, The communication protocol is realized, and for example, there is provided a single chip microcomputer incorporating a nonvolatile memory such as a flash memory. The inventors have found that when a storage card such as a multimedia card is applied to a cellular phone of such a GSM mobile communication system, an insertion slot of a storage card is required in addition to the SIM card, and there is room for improvement in the space factor. In addition, it is inevitable that the storage card and the SIM card generate a difference in security level in the stored information, and the present inventors have found the necessity of allowing different levels of security in different functions.

An object of the present invention is to provide an IC card capable of extending functions such as multibank or multifunction while maintaining compatibility with a predetermined standard with respect to terminal arrangement.

Another object of the present invention is to provide an IC card capable of expanding a multifunction having different security levels.

The above and other objects and novel features of the present invention will be apparent from the following description of the specification and the accompanying drawings.

(1) The IC card according to the present invention considers the compatibility and function expansion of the IC card. Regarding the compatibility of the IC card, the upper compatibility and the lower compatibility are maintained. For example, the upper compatibility can be used by inserting the lower IC card into the card slot of the upper IC card. For backward compatibility, for example, the IC card can be inserted into a card slot of a lower IC card and used. The IC card has a first functional block and a second functional block constituted by a semiconductor integrated circuit, and has a configuration in which a plurality of connector terminals are exposed.

Regarding the compatibility of the IC card, the plurality of connector terminals are arranged in zigzag form in a plurality of rows between adjacent mutual columns before and after the insertion direction of the IC card. In other words, the plurality of connector terminals have an array of two rows formed before and after the insertion direction of the IC card, and the arrangement between the terminal areas of the connector terminals arranged in the first row and the second row are arranged in the second row. The area | region between the terminal of the connected connector terminal mutually shifts in a column direction. Another expression of the zigzag arrangement is that the plurality of connector terminals have an array of two rows formed before and after the IC card insertion direction, the column arrangement of the connector terminals arranged in the first row and the connector terminals arranged in the second row. The arrangement of the columns in the column direction is shifted from each other in the column direction.

By employing the arrangement of the connector terminals, a plurality of rows arranged in the form represented by the zigzag shape can be employed in the card slot, so that a relatively simple configuration can be adopted in the card slot in which a plurality of slot terminals are alternately arranged in parallel with each other. If the connector terminal arrangement of the lower IC card is adopted as the specific connector terminal string of the IC card, and the dedicated IC card dedicated function is assigned to the other zigzag connector terminal arrangement, the upper IC card is assigned to the card slot of the lower IC card. Backward compatibility, which can be made available by mounting on and becomes easy to realize.

In terms of the function expansion of the IC card, the connector terminal of the card is connected to the first functional block, the first connector terminal dedicated, the second connector terminal connected to the second functional block and dedicated, and the first And a third connector terminal having a common operating power source for both the functional block and the second functional block. By converting data terminals and the like other than the power supply into the first functional block and the second functional block, respectively, the above compatibility and the backward compatibility can be easily realized.

In addition, when trying to achieve compatibility between three generations or three or more types of IC cards, the connector terminal array of the first IC card is adopted as the connector terminal array of the first row as it is, and the second row of other connectors of the zigzag shape When a dedicated function added to the second IC card is assigned to the terminal row, and a dedicated function added to the third IC card is assigned to both the terminal row of the specific first row and the connector terminal row of the second row. Is assumed. At this time, consideration is given to realizing high compatibility and low compatibility between the second IC card and the third IC card. Therefore, the connector terminal at one end in the column direction of the connector terminals arranged in the second row is arranged in the first row and extends to a position adjacent in the column direction with the connector terminal at one end in the column direction of the connector terminal. The connector terminal of the other end of the row direction of the connector terminal arrange | positioned at the 2nd row is arrange | positioned in the said 1st row, and employ | adopts the structure which extends to the position adjacent to the connector terminal of the other end of the row direction of the connector terminal in the column direction. According to this, the first to third IC cards can be inserted into slots of any other IC card so that the available compatibility can be easily realized.

(2) Let's turn the function expansion of the IC card to the multi-bank memory. At this time, the first functional block is configured to access the first nonvolatile memory and the first nonvolatile memory according to an instruction supplied from the first connector terminal, and the first nonvolatile memory can be electrically rewritten. A first memory card unit having a first controller for performing interface control with an external device through a connector terminal. The second functional block may be electrically rewritten by the second nonvolatile memory, and the second connector terminal may be controlled simultaneously with access control of the second nonvolatile memory according to an instruction supplied from the second connector terminal. It is a second memory card unit having a second controller for controlling the interface with the outside through.

Although the specific function of the connector terminal is arbitrary, considering the present state of the multimedia card, the first connector terminal includes a clock terminal and a data terminal, the second connector terminal includes a clock terminal and a data terminal, The third connector terminal includes a power supply terminal and a ground voltage supply terminal.

The first memory card unit and the second memory card unit are configured as a multi-bank memory unit capable of parallel operation.

In order to increase the security of the data stored in the nonvolatile memory, the first controller encrypts the data written to the first nonvolatile memory, and decrypts or otherwise decodes the data read from the first nonvolatile memory. A confidentiality (secure) function for encrypting, the second controller encrypts data written to the second nonvolatile memory, and decrypts or other encryption for data read from the second nonvolatile memory. It is recommended to have a confidentiality protection function.

(3) For example, let's turn the function expansion of the IC card to multifunction. In this case, the first functional block includes a first controller having a first nonvolatile memory and a first controller for controlling access to the outside through the first connector terminal while controlling access of the first nonvolatile memory. 1 data processing unit. The second functional block includes a second nonvolatile memory and a second controller configured to control access to the second nonvolatile memory and to control an interface with the outside through the second connector terminal. Unit. The first data processing unit and the second data processing unit are each provided with separate areas for storing secret codes for security.

As a result, multi-function functions having different security levels can be realized in one IC card.

The first data processing unit records the secret code in the storage area of the secret code in the manufacturing step of the nonvolatile memory, and the second data processing unit stores the secret code in the manufacturing step of the IC card or by the vendor of the IC card. It is also possible to record a secret code in. Thereby, the secret code can be set by the method or procedure necessary for the security maintenance according to the difference of the security level. For example, when the first data processing unit is a memory card unit for general data storage and the second data processing unit is a microcomputerized SIM card unit, the second processing and managing billing information is performed. Security for the data processing unit must be stricter than for the first data processing unit, and can sufficiently respond to such a request.

Even in the case where the first data processing unit is a memory card unit for general data storage, the first controller is provided with data written to the first nonvolatile memory in order to increase the effectiveness of copyright protection and the like of the data stored therein. An encryption protection function may be employed, and a confidential protection function for decrypting or otherwise encrypting the data read from the first nonvolatile memory may be employed.

When employing the memory card unit, the SIM card unit, or the like as a multi-function function, for example, the first connector terminal includes a clock terminal, a plurality of bits of data terminals, and a command terminal of 1 bit, and the second connector. The terminal includes a clock terminal, a data terminal and a reset terminal, and the third connector terminal includes a power supply voltage supply terminal and a ground voltage supply terminal.

(4) When the connector terminal for power supply voltage is arranged in the connector terminal row in the first row of the IC card insertion direction, the connector terminal row in the second row provides an area between terminals at a position adjacent to the connector terminal for the supply voltage supply. Form it. If another connector terminal adjacent to the power supply terminal is arranged in a zigzag shape in the second row of connector terminals, a card slot corresponding to the other connector terminal is inserted during insertion of the IC card into the card slot. The slot terminal may come into contact with both the power supply connector terminal and the other connector terminal positioned in front of the other connector terminal before contacting the other connector terminal. In this state, the power supply slot terminal is already in contact with the power supply terminal. If doing so, there is a risk of short circuit between the power supplies. By adopting the configuration for securing the terminal-to-terminal region, it is not necessary to devise a means for increasing the distance between the first and second rows of connector terminals or narrowing the width of the connector terminals.

1 is an explanatory diagram mainly showing the configuration of a connector terminal and a circuit unit in the configuration of a multifunction IC card which is an example of the IC card according to the present invention.

2 is an explanatory diagram illustrating a list of connector terminal functions of a multifunction IC card.

3 is a plan view illustrating an actual state of a circuit mounting surface of a multifunction IC card.

4 is a rear view illustrating the actual state of the terminal surface of the multifunction IC card.

5 is a perspective view illustrating the appearance of a mobile telephone.

6 is a plan view showing a state in which a multi-function IC card is mounted in the card slot.

7 is a plan view showing a state where a multifunction IC card is mounted in a card slot for a multimedia card.

8 is a functional block diagram of a memory card unit.

9 is a functional block diagram of a SIM card unit.

10 is a functional block diagram of a mobile phone capable of using a multifunction IC card.

Fig. 11 is an explanatory diagram mainly showing the connection form of a connector terminal and a circuit unit in the configuration of the multi-bank memory card as the second column of the IC card according to the present invention.                 

FIG. 12 is an explanatory diagram illustrating a list of connector terminal functions of the multifunction IC card of FIG.

FIG. 13 is an explanatory diagram showing, as a comparative example, an arrangement of connector terminals for generating a short between power supplies.

<Description of the symbols for the main parts of the drawings>

52, 59: A / D converter 53: Data processor

54: GMSK modulation 55, 60: D / A converter

56: RF transmitter 58: RF receiver

70: input switch unit 71: display controller

72: card interface controller 75: liquid crystal display

<< multi-function IC card >>

In Fig. 1, the configuration of the multifunction IC card, which is an example of the IC card according to the present invention, mainly shows the connection form between the connector terminal and the circuit unit.

The multifunction IC card (MFC) shown in FIG. 1 has compatibility with a multimedia card and an SD card in terms of zigzag two-row arrangement of the connector terminals 2, # 1 to # 13 with respect to the card substrate 1; In this regard, the multi-function function is realized in that the memory card unit 3 and the SIM card unit 4 are respectively connected and mounted to predetermined terminals of the connector terminals 2, # 1 to # 13, respectively. 5 is a connection wiring for generically referring to wiring patterns for connecting the memory card unit 3 and the SIM card unit 4 to the connector terminals 2, bonding wires, and the like.

Here, a multi-function IC card (MFC) is assumed to be available for use in a mobile phone. The memory card unit 3 has a nonvolatile memory and a controller, such as an electrically rewritable flash memory, which will be described later in detail, and is used for data storage for storing telephone data and incoming melody data. The SIM card unit 4 is constituted by a microcomputer with a built-in flash memory for storing subscriber information and billing information and communication protocols necessary for subscriber approval and management for security in a GSM mobile phone or the like.

In FIG. 1, the connector terminals 2 of # 1 to # 13 are shown as being directly connected to the memory card unit 3 and the SIM card unit 4, but in reality, the connector terminals of # 1 to # 13 are shown. (2) is arranged on the back surface (terminal surface) of the card board 1, and the connection pad which connects to the corresponding connector terminal in a through hole or a wiring pattern is provided in the surface (mount surface) of the card board, The memory card unit 3 and the SIM card unit 4 are connected.

The multifunction IC card (MFC) conforms to the size of the multimedia card and conforms to the standard of 1.4 mm in thickness and 24 mm x 32 mm in flat dimension. The card board 1 of the multi-function IC card (MFC) has a connector terminal 2 of # 1 to # 13 on the terminal surface of a board made of a resin substrate such as glass epoxy resin before and after the card insertion direction (length direction). It is arranged in two rows with each other adjacent to.

The connector terminals 2 of # 1, # 2, # 5 to # 8, # 13 are connected to the memory card unit 3, and the connector terminals 2 of # 9, # 11, # 12 are SIM card units. Connected to (4), the connector terminals 2 of # 3 and # 4 for operation power supply are commonly connected to both the memory card unit 3 and the SIM card unit 4.

The connector terminals 2 of # 1 to # 7 have an arrangement and a function according to the standard of the multimedia card. Multimedia cards generally have a multimedia card mode and a SPI (Serial Peripheral Interface) mode. The selection of the operation mode is determined by the predetermined terminal state at power-on. The terminal function of the multimedia card is illustrated in the column of 7 pin (1 bit) in FIG. 2, and the difference between the SPI mode and the multimedia card mode is shown in parentheses. In multimedia card mode, # 1 is reserved terminal (NC, open or fixed to “1”), # 2 is command terminal (CMD, command input and response signal output), # 3 and # 6 are Ground voltage (ground) terminals (Vss1, Vss2), # 4 is a power supply voltage supply terminal (Vdd), # 5 is a clock input terminal (CLK), # 7 is a data input and output terminal (Data). In SPI (Serial Peripheral Interface) mode, # 1 is the chip select terminal (CS, negative logic), # 2 is the data input terminal (Din, for data and command input from the host device to the card), and # 3 and # 6 are the circuits. Ground voltage (ground) terminal (Vss1, Vss2), # 4 is the power supply voltage supply terminal (Vdd), # 5 is the clock input terminal (CLK), # 7 is the data output terminal (Dout, memory card to host device) Data and status output). The multimedia card mode is an optimal operation mode for a system using a plurality of multimedia cards simultaneously. The identification of the multimedia card is a card identification ID (relative address) set by the host device (not shown) in the initialization sequence of the multimedia card. Use The SPI mode is optimal for use in a simple and inexpensive system, and the selection of the multimedia card is made by a chip select signal supplied to the connector terminal of # 1 in the host device. In any operation mode, the controller of the memory card unit 3 performs access control of the memory chip and interface control of the host device in response to a command given from the host device.

The connector terminals 2 of # 8 to # 13 are positioned as extension terminals for the multimedia card. The connector terminals 2 of # 1 to # 7 constitute the first row of connector terminals with respect to the card board 1, and the added connector terminals 2 of # 8 to # 13 are located in the first row. A connector terminal string of the second row spaced apart from the connector terminal string is constituted. The size of the connector terminal 2 of # 9 to # 12 is the same as that of the other connector terminal 2. The connector terminal 2 of # 13 is disposed in the first row and extends to a position completely adjacent to the connector terminal # 7 at one end in the column direction of the connector terminal row in the column direction, and the connector terminal of the terminal number # 8 ( 2) is arranged in the first row and extends to an adjacent position partially overlapping with the connector terminal # 1 in the connector terminal row in the column direction. In the connector terminal string of the first row and the connector terminal string of the second row, the arrangement of the connector terminals in the column direction is shifted from each other in the column direction. In other words, the connector terminal 2 of the first row and the connector terminal 2 of the second row are arranged in a zigzag shape.

  The extension terminals # 8 and # 13 are meaningful connector terminals when the 4-bit mode shown in the 9 pin (4 bit) column of FIG. 2 is selected for the multifunction IC card (MFC). That is, when the 4-bit mode is selected, terminals # 2 to # 7 are assigned to the same function as the multimedia card mode so that the terminal # 1, which is a reserve terminal in the multimedia card mode, is the fourth data terminal (Data3). ), The added terminals # 8, # 9 become the data terminal Data1 of the second bit and the data terminal Data2 of the third bit. The data terminal Data0 of the first bit is the same terminal # 7 as the multimedia card mode. Therefore, if the 4-bit mode is selected for this multi-function IC card (MFC), data input / output is possible in 4-bit parallel. At this time, the shape of the connector terminal 2 of # 8, # 13 is set in consideration of compatibility with the connector terminal of an SD card. The data terminal functions of # 8 and # 13 may be switched in the above 4-bit mode, and the 4-bit mode may be compatible with the SD card.

The memory card unit 3 of the multi-function IC card MFC has a backward compatibility mode for the multimedia card. That is, the controller in the memory card unit 3 uses a 1-bit mode such as the SPI mode or the multimedia card mode of the multimedia card and the 4-bit data terminals # 1, # 7, # 8, # 13. It has a 4-bit mode with 4-bit parallel input / output. The 1-bit mode is an operation mode that enables the multifunction IC card (MFC) to operate as a multimedia card.

The operation mode may be set in response to a state of a predetermined connector terminal or a command input state from a predetermined connector terminal. For example, when the multi-function IC card (MFC) is mounted in the card slot of the multimedia card, the terminals # 8 and # 13 are floated. Therefore, when the power is turned on, the controller is connected to the terminals # 8 and # 13. The 1-bit mode may be set in the multifunction IC card by detecting both or one-way floating states. In addition, when mounted in a dedicated card slot having slot terminals corresponding to nine connector terminals 2, the terminals # 8 and # 9 are connected to the slot terminals of the card slot, so that at least the controller is turned on when the power is turned on. The 4-bit mode may be set in the multi-function IC card MFC by detecting that a specific signal or command is supplied from the host device in both or one directions of the terminals # 8 and # 9.

The extension terminals # 9 to # 12 are terminals dedicated to the SIM card unit 4. The SIM card unit 4 is constituted by, for example, a single chip micron computer incorporating a nonvolatile memory such as a flash memory. # 9 is data input / output terminal (I / O), # 10 is non-connect terminal. # 11 is a clock terminal CLK and # 12 is a reset terminal. The operating power of the SIM card unit 4 is supplied through the ground terminal Vss of # 3 and the power terminal Vdd of # 4. When a card slot corresponding to the terminal configuration described in the 13pin column of Fig. 2 is provided in a cellular phone or the like, and a multifunction IC card (MFC) is attached thereto, the memory card unit 3 and the SIM card unit 4 are independent of each other. It becomes operable with. When the multi-function IC card MFC is connected to a personal computer or the like through a card adapter or the like, the memory card unit 3 in the multi-function IC card MFC can be efficiently modified and the like.

FIG. 3 shows the actual state of the circuit mounting surface in the multifunction IC card MFC, and FIG. 4 illustrates the actual state of the terminal surface. The card board 1 of the multifunction card (MFC) has a connector terminal 2 of # 1 to # 13 on the terminal surface of a board made of a resin substrate such as glass epoxy resin before and after the insertion direction (length direction) of the card. Two rows are arranged between adjacent columns. On the mounting surface, connection pads 7 are formed on the connector terminals 2 in a one-to-one correspondence. The connection pad 7 is formed of a conductive pattern such as aluminum, copper or iron alloy. The connector terminal 2 is formed by conducting gold plating, nickel plating, or the like on a conductive pattern such as aluminum, copper, or iron alloy. The connection between the connection pad 7 and the connector terminal 2 is made up of a wiring pattern (not shown) on the card substrate 1, a through hole and the like which conduct the front and back sides of the card substrate 1 to each other.

The memory card unit 3 has, for example, a flash memory 8 that can be electrically rewritten on the mounting surface of the card substrate 1 and a controller 9 that controls the flash memory 8. The flash memory 8 and the controller 9 are not particularly limited, but are each composed of separate semiconductor chips. As a matter of course, both of them may be combined into one chip or may be laminated with separate chips.

The controller 9 controls the read / write operation of the flash memory 8 according to an instruction given externally through the connector terminal 2. When considering data security, the controller 9 also encrypts data written to the flash memory 8, and decrypts or otherwise encrypts data read from the flash memory 8; It is good to provide a privacy protection function.

The controller 9 has a longitudinal length in the arrangement direction of the connector terminal 2, and a plurality of connector interfaces connected to the connector terminal 2 via the connection pads 7 on the connector terminal 2 side. The terminal 9pin and the flash memory 8 side have a plurality of memory interface terminals 9Pj connected to the flash memory 8. The flash memory 8 has a plurality of controller interface terminals 8Pk connected to the controller 9 on the controller 9 side. The connection pad 7 is connected to the connector interface terminal 9Pi of the controller 9 by a bonding wire 10. The memory interface terminal 9Pj of the controller 9 is connected to the controller interface terminal 8Pk of the flash memory 8 by a bonding wire 11. The connector interface terminal 9Pi has a terminal function corresponding to # 1 to # 8, # 13. The memory interface terminal 9Pj is a terminal for controlling the flash memory 8, for example, and includes a chip enable signal output, a write enable signal output, a command enable signal output, a data input output, an output enable signal output, and a ready. A plurality of terminals having functions such as busy signal output and reset signal output. The controller interface terminal 8Pk includes, for example, a chip enable signal input, a write enable signal input, a command enable signal input, a data input output, an output enable signal input, a ready busy signal output, a reset signal input, and the like. A plurality of terminals having a function. The card substrate 1 also has a test terminal 13 connected to the controller 9 and the flash memory 8 by bonding wires (or wiring patterns) 12.

The SIM card unit 4 is coupled to the connection pad 7 corresponding to # 9, # 11, # 12 via the bonding wire 17A. The operating power for the SIM card unit 4 is supplied via the bonding wire 17B. The bonding wire shown in 16 is an interface wiring for connecting the controller 9 and the SIM card unit 4, which enables information exchange between the memory card unit 3 and the SIM card unit 4.

The card substrate 1 is mounted and fixed to the casing 14 with the mounting surface facing inward, the mounting surface is covered with the casing 14 to be protected, and the terminal surface is exposed from the casing 14.

5 shows the appearance of a cellular phone. The multi-function IC card MFC is mounted in the card slot 21 provided on the side of the mobile telephone 20.

6 shows a state in which the multifunction IC card MFC is mounted in the card slot 21. As shown in FIG. The card slot 21 has a slot terminal 22 protruded corresponding to each connector terminal 2 therein. Since the connector terminals 2 are arranged in two rows in the zigzag shape, the protrusions of the slot terminals 22 of the card slot 21 are short (22 (S)) and long (22 () in the zigzag shape. L)), a relatively simple configuration can be adopted in which the slot terminals 22 are arranged in parallel while changing the amount of protrusion of the slot terminals 22. As shown in FIG. The contact with the connector terminal 2 is a tip portion (■ mark) of the slot terminal 22.

7 shows a state in which the multi-function IC card MFC is mounted in the card slot 23 for the multimedia card. Since the arrangement of the connector terminals 2 of # 1 to # 7 of the multifunction IC card (MFC) conforms to the multimedia card, the multifunction IC card (MFC) is mounted in the card slot 23 for the multimedia card, The use of the card unit 3 alone can also be supported. 24 is a slot terminal of the card slot 23 to which the connector terminals 2 of # 1 to # 7 are connectable.

8 shows a functional block diagram of the memory card unit 3. The controller 9 has an interface controller 30, a flash memory controller 32, an encryption / decryption circuit 33, and a security circuit 34. The interface controller 30 is connected to the cellular phone 20 through the connector terminal 2, and decodes the command given by the cellular phone 20 to control the entire interior of the memory card unit 3 and the cellular phone 20. ) Interface control. Such control program or state transition control logic is not particularly limited, but is provided inside the interface controller 30. It is also possible to arrange the control program in the flash memory 8.                 

The interface control is an interface control in a multimedia card mode or SPI mode via the connector terminal 2. The overall control of the inside of the memory card includes first authentication control using the security circuit 34, second encryption / decryption control of the input / output data of the flash memory 8, and third through the flash memory controller 32. Access control as a file memory of the flash memory 8.

The access control is, for example, a control in consideration of compatibility with a file system in which sectors are the basis of data management. For example, in order to manage data or files in sector units such as 512 bytes, the memory array of the flash memory 8 is divided into data areas and management areas for each data area for every 512 bytes corresponding to one sector. . The management area has information showing the sector usage state of whether valid data is held in the corresponding data area, pointing information to subsequent sectors, and the like. The management area constitutes the sector management table 35 as a whole. In the access control, the sectors of the file to be accessed correspond to the physical addresses of the flash memory 8 to perform memory operations such as read, erase, write, and confirm.

Encryption / decryption control is, for example, a process of first encrypting data written to the flash memory 8 with the encryption / decryption circuit 33, and enabling the encrypted data to be written to the flash memory 8, and a flash memory controller. Decoding or other encryption is performed by the encryption / decryption circuit 33 on the data read from the flash memory 8 in step 32, and a process is performed so that the processed data can be output from the interface controller 30 to the outside. The encryption / decryption method may be a secret key or an appropriate algorithm using a secret key and a public key.

The authentication control will be described. Assuming that the memory card unit 3 is used for distributing music information and literary information through the mobile phone 20 or the like, it is preferable to consider copyright protection of such information. In addition, when a telephone number or the like is stored and used in the memory card unit 3, it will be required to provide privacy protection for such information.

Although it does not restrict | limit especially with respect to copyright protection, the predetermined authorization code regarding a copy right is recorded in the manufacturing step of the flash memory 8 in the specific area of the flash memory 8. In the distribution of information, an authorization code relating to the copy right is transmitted from the host apparatus to the cellular phone 20 or the like, which is set in the authorization code management table 36 of the security circuit 34 to correspond to the authorization code. Information in which information or the like is distributed is downloaded, recorded in the flash memory 8, and the recording memory address is set in the authorization management table 36 of the security circuit 34 in correspondence with the authorization code. Thereafter, the multi-function IC card MFC is removed from the cellular phone 20 and this time is mounted on a reproduction terminal device or the like. The interface controller 30 of the multifunction IC card (MFC) determines whether or not the memory address of the file to be accessed is a memory area corresponding to the authorization code on the authorization management table 36 in response to an access request from the terminal device. The security circuit 34 makes a determination using the authorization management table 36. If the authorization code corresponds to the authorization code, the security circuit 34 has a predetermined relationship with the authorization code recorded in the flash memory 8 in the authorization code of the possession of the security circuit 34 in the manufacturing step. If not, do not allow that file access The authorization code management table 36 may be constituted by a nonvolatile memory which can be electrically changed and recorded. This authorization code management table 36 may be arranged in the interface controller 30 or the flash memory 8.

As for privacy protection, for example, once the encryption code is set in the encryption code management table 37 of the security circuit 34 from a device such as a cellular phone, the initialization process of the multifunction IC card (MFC) is performed. At each end, in the initial read access request to the flash memory 8, the security circuit 34 requests the input of the encryption code to the interface controller 30, and is already set in the encryption code management table 37. The interface controller 30 does not start the memory access control in response to the read request until the encryption code corresponding to the encryption code is input from the outside. The encryption code management table 37 may be constituted by a nonvolatile memory which can be electrically changed and recorded. This authorization code management table 36 may be arranged in the interface controller 30 or the flash memory 8.

9 shows a functional block diagram of the SIM card unit 4. The SIM card unit 4 is realized by a single-chip microcomputer and uses RAM (Random Access Memory) 41 and CPU 40 to be used as a work area of the CPU (central processing unit 40), CPU 40, and the like. It consists of a ROM (lead only memory) 42 holding an operation program, a serial interface circuit (SIO) 43 for performing data input / output with the outside, and a flash memory 44. In the GSM mobile communication system, the SIM card unit 4 supports the operation of the GSM operator and the approval and management of the GSM subscriber, such as the accumulation and management of subscriber information related to security and the creation and management of a user PIN (Personal Identification Number). It protects the necessary subscriber information and also protects the information necessary for the GSM service such as billing information, speed dial and counterpart fixed dial. The CPU 40 performs a process for holding and protecting this information in the flash memory 44 by using the RAM 41, and therefore the operation program is held by the ROM 42. The SIM card unit 4 also implements communication protocols, file management, and security management. Security management is to verify the legitimacy of the user's right to use, the use system using the authentication code, such as the user PIN. The detailed authentication procedure is omitted, but the authentication code in the GSM service is stored in advance in the flash memory 44 of the SIM card unit 4 by the GSM service provider in a one-to-one correspondence to the user. The flash memory 44 of the SIM card unit 4 is stored in advance. The authentication code registered in advance in the SIM card unit 4 is used, for example, for coincidence determination with the code input to the SIM card unit 4 for each call, and validity confirmation is made based on the determination result. There is also a relationship with billing, and the security level in the SIM card unit 4 is generally higher than the security level in the memory card unit 3. In the multi-function IC card (MFC), the SIM card unit (4) and the memory card unit (3) have their own connector terminals as data input / output terminals, respectively, so that the recording and reading of secret codes such as security information for each of them is performed. It can be done independently, which allows different handling of security levels. In other words, the security level can be used differently in the multifunction.

10 shows a functional block of a cellular phone which can use a multifunction IC card (MFC).

The voice is received by the microphone 51 as an analog voice signal, converted into a digital voice signal by the A / D converter 52, and input to the data processor 53. The data processor 53 performs voice encoding processing and channel codec processing as layer processing on the received digital voice signal, and outputs the processing signal as a transmission signal. The voice encoding process and the channel codec process are not particularly limited, but are performed using a DSP. Although not shown in particular, the data processor 53 may incorporate an accelerator for the channel codec and the voice codec.

The transmission signal generated by the data processor 53 is, for example, modulated by the GMSK modulation circuit 54 and further converted into an analog signal by the D / A converter 55 to be transmitted to the high frequency transmitter (RF transmitter, 56). By way of antenna 57.

The received signal received by the antenna 57 is received by the high frequency receiver (RF receiver) 58, converted into a digital signal by the A / D converter 59, and collected by the data processor 53. The data processor 53 performs the Viterbi decoding process, the audio decoding process, and takes out the audio signal and outputs it. Viterbi decoding processing, audio decoding processing, etc. are performed by an DSP or an accelerator (not shown).

The voice signal output from the data processor 53 is converted into an analog voice signal by the D / A converter 60, and is output as voice from the speaker 61.

In the cellular phone 20 of FIG. 10, the data processor 53 includes a read only memory which holds a central processing unit (CPU) 62, a direct memory access controller (DMAC) 63, an operation program of the CPU 62, and the like. ROM 64, a random access memory (RAM) 65 used for the work area of the CPU 62, and input / output circuits I / O 66 such as an input / output port and a serial interface. Although not particularly limited, in the example of the cellular phone 20, the data processor 53 is an operating program such as voice codec processing for voice encoding decoding, channel codec processing as layer processing, and system control processing. Hold. The transfer control condition setting process for the DMAC 63 is performed by the CPU 62 executing the operation program stored in the ROM 64.

Although not particularly limited, the input switch unit 70, the display controller 71, and the card interface controller 72 are connected to the I / O 66 of the data processor 53. The input switch unit 70 has a plurality of input switches capable of inputting numbers and characters by function designation. The card interface controller 72 controls interface between the multifunction IC card (MFC) mounted on the card slot 21 and the data processor 53. The data processor 53 has a function of appropriately displaying and controlling the state of the mobile telephone apparatus 20 such as a transmission telephone number, an incoming telephone number, a communication state, a battery voltage, and the like on the liquid crystal display 75 through the display controller 71. have.

`` Multibank Memory Card ''

Fig. 11 mainly shows the configuration of a connector terminal and a circuit unit in the configuration of a multi-bank memory card as a second example of the IC card according to the present invention.

The multi-bank memory card MBC shown in FIG. 11 has the same arrangement as that of the multi-function IC card MFC of FIG. 1, and has two zigzag-shaped connector terminals (# 1 to # 13) in two rows on the card substrate 1. 2) are arranged, and the memory card units 3 and 3A are connected to the connector terminals 2 of # 1 to # 13 so as to constitute a multi-bank memory capable of parallel operation. 5 is a connection wiring for generically referring to wiring patterns for connecting the memory card units 3 and 3A to the connector terminals 2, bonding wires, and the like.

The memory card unit 3 is connected to the connector terminals 2 of # 1 to # 8, # 13, and has the same configuration as that of the memory card unit 3 of the multifunction IC card (MFC) of FIG. Therefore, the memory card unit 3 is operable as a multimedia card as shown in the 7 pin (1 bit) column of FIG. 12 as described above, and is shown in the 9 pin (4 bit) column of the twelfth aspect. Likewise, 4-bit parallel data input / output operation is possible like SD card. The operation mode is determined as described above in the state of the connector terminal 2 when connected to the card slot, and in the multimedia card compatible operation mode, the multimedia card mode and the SPI mode are as described above. Is determined by the designation at the time of initialization to the memory card unit 3 by &quot;

The memory card unit 3A has only a function as a memory card capable of only 1-bit serial input / output based on the multimedia card. The memory card unit 3A is supplied with the ground voltage Vss1, the power supply voltage Vdd, and the ground voltage Vss2 from the connector terminals of # 3, # 4, and # 6 shared with the memory card unit 3. . In the multimedia card mode, # 9 is a reserve terminal (NC-2) (open or fixed to "1"), # 10 is a command terminal (CMD-2) (command input and response signal output), # 11 functions as a clock input terminal CLK-2 and # 12 functions as an input / output terminal Data-2 of data. In SPI mode, # 9 is the chip select terminal (CS-2, negative logic), # 10 is the data input terminal (Din-2, for data and command input from the host device to the card), and # 11 is the clock input terminal ( CLK-2) and # 12 function as a data output terminal Dout-2 (data and status output from the memory card to the host device). The multimedia card mode and the SPI mode are determined by designation upon initialization to the memory card unit 3A according to the host apparatus as described above.

When the multi-bank memory card MBC shown in FIG. 11 is mounted in a card slot 21 having 13 slot terminals 22 as illustrated in FIG. The operation modes that can be adopted by each of the memory card units 3 and 3A when the units 3 and 3A are operated in parallel are both multimedia cards as illustrated in the 13pin (A) column of FIG. This mode is to set the multimedia card mode or SPI mode in the compatibility mode. 2 is an aspect in which the memory card unit 3 is a 4-bit parallel input / output operation mode, and the memory card unit 3A is a multimedia card mode in a multimedia card compatibility mode as illustrated in the 13-pin (B) column of FIG. . In either case, the host apparatus can independently control both memory card units 3 and 3A included in one IC card, and can also operate in parallel completely.

<< short prevention between power supply >>

In the arrangement of the multi-function IC card (MFC) of FIG. 1 and the multi-bank memory card (MBC) of FIG. In the above example, no terminal is arranged behind the terminal of # 4, which is a power supply connector terminal. As illustrated in FIG. 6, in the part where the connector terminal 2 is arranged in a zigzag shape, the slot terminal 22 of the card slot 21 has a short terminal 22, S and a long terminal 22, L. Alternately, they are arranged in such a way that at half the pitch of the connector terminal 2 is concentrated. On the other hand, if there is no connector terminal 2 at the rear as shown in # 4, the slot terminals 22 and Vdd corresponding to the connector terminal 2 of the power supply voltage Vdd # 4 as shown in FIG. Long slot terminals 22 and L are not disposed at both sides.

On the other hand, as illustrated in Fig. 13A, an IC card 25 in which data terminals # 10 and # 11 are arranged behind the connector terminal of power supply voltage Vdd # 4 is assumed. In the card slot 26 corresponding to the IC card 25, the long slot terminal 26Ab is arranged next to the slot terminal 26Aa corresponding to the connector terminal of # 4.

When inserting the IC card 25 of FIG. 13 into the card slot 26, as shown in FIG. 13B, the contact (marked portion) of the slot terminal 26Ab inputs the power supply voltage Vdd. Ground the connector terminal of # 4 and the connector terminal of # 4 to input the ground voltage (Vss) of the circuit and the connector terminal of # 3 to input the ground voltage of the circuit. At this time, if the slot terminal 26Aa receiving the power supply voltage Vdd conducts to the connector terminal of # 4, and the slot terminal 26Ac receiving the circuit ground voltage Vss conducts to the connector terminal of # 3, As shown in Fig. 13C, the power supply voltage Vdd and the ground voltage Vss are shorted through the contacts of 26Aa, the contacts of # 4 and 26Ab, and the contacts of # 3 and 26Ac.

As shown in FIG. 6, by not arranging the connector terminal behind the terminal of # 4, which is a power supply connector terminal, such a short circuit can be prevented in advance.                 

As mentioned above, although the invention made by this inventor was demonstrated concretely based on the Example, this invention is not limited to it, A various change is possible in the range which does not deviate from the summary.

For example, the present invention can be applied to a memory card other than the external specification of a multimedia card, for example, an IC card of another standard such as a compact flash memory. Therefore, the size of the card substrate, the number of connector terminals, the function of the connector terminal, and the like are not limited to the above description, and can be changed as appropriate. The memory mounted on the IC card of the present invention is not limited to the nonvolatile memory, and may be a volatile memory (SRAM, DRAM, etc.). The nonvolatile memory is not limited to the flash memory but may be a ferroelectric memory.

INDUSTRIAL APPLICABILITY The present invention can be used as a multi-function IC card for cellular phones such as GSM and other portable information terminals. Moreover, the multi-bank memory IC card is widely used for auxiliary video storage devices of digital video cameras, digital still cameras, and other electronic devices. It is available. In addition, as a function of the multi-function IC card, it is also possible to combine the functions such as bank account, credit card, ID card, etc. with the memory function.

Claims (15)

In a nonvolatile memory device, A first external including a command terminal for receiving a command from the outside, a clock terminal to which a clock signal is input, and a data terminal for receiving data from the outside in synchronization with the clock signal or outputting data to the outside in synchronization with the clock signal With terminals, The second external terminal, The third external terminal, A first functional block including a controller connected to the first external terminal and the third external terminal and a nonvolatile memory connected to the controller; A second functional block connected to the second external terminal and the third external terminal and including a microprocessor capable of processing a secure function; The first functional block and the second functional block are formed on different semiconductor substrates, The first external terminal is configured for the operation of the first functional block, The second external terminal has a fourth terminal used for input and output of data for performing the secure function processing of the second functional block; And a power terminal configured to supply operating power to the controller, the nonvolatile memory, and the microprocessor. In the nonvolatile memory device of claim 1, The microprocessor has a second nonvolatile memory that is capable of electrically erasing or writing data, The secure function processing includes a process of encrypting data written to the second nonvolatile memory or decrypting data read from the second nonvolatile memory. In the nonvolatile memory device of claim 2, And the secure function processing is a personal authentication process. In the nonvolatile memory device of any one of claims 1 to 3, The first functional block having a plurality of the data terminal, A first operation mode for inputting and outputting data using only one data terminal of the plurality of data terminals; And a second operation mode in which data is inputted and outputted using a plurality of the plurality of data terminals. In the nonvolatile memory device of any one of claims 1 to 3, The first external terminal and the second external terminal and the third external terminal are arranged in a plurality of rows along a side positioned in front of the insertion direction of the nonvolatile memory device; Terminals arranged in a column located in front of the insertion direction of the nonvolatile memory device and terminals arranged in a row located in the rear of the insertion direction of the nonvolatile memory device are located along the insertion direction of the nonvolatile memory device in the area occupied by each terminal. Non-volatile memory device, characterized in that the center line is arranged not to be arranged on the same line. In the nonvolatile memory device of claim 4, The first external terminal and the second external terminal and the third external terminal are arranged in a plurality of rows along a side positioned in front of the insertion direction of the nonvolatile memory device; Terminals arranged in a column located in front of the insertion direction of the nonvolatile memory device and terminals arranged in a row located in the rear of the insertion direction of the nonvolatile memory device are located along the insertion direction of the nonvolatile memory device in the area occupied by each terminal. Non-volatile memory device, characterized in that the center line is arranged not to be arranged on the same line. In the nonvolatile memory device of claim 5, The plurality of terminals arranged in a row before the insertion direction of the nonvolatile memory device are terminals used as the first functional block. And a plurality of terminals arranged in a row after the insertion direction of the nonvolatile memory device includes a terminal used as the second functional block. In a nonvolatile memory device, A wiring board having a first side and a second side; A controller, a nonvolatile memory capable of electrically erasing data or electrically writing data, and a microcomputer capable of processing a secure function are formed on different semiconductor substrates, respectively, and are disposed on the first surface of the wiring board. A plurality of metal terminals on the second surface of the wiring board; A first terminal of the plurality of metal terminals is connected to the controller, a second terminal is connected to the microcomputer, and a third terminal is connected to both the controller and the microcomputer, The controller and the nonvolatile memory are connected by wiring formed on the wiring board, The first terminal is connected to the controller by wiring formed on the wiring board, A command terminal for inputting a command for transmitting an operation instruction to the controller, a clock terminal for inputting a clock signal, and data stored in the nonvolatile memory via the controller are input in synchronization with the clock signal or the nonvolatile memory Has a data terminal for outputting data stored in synchronization with the clock signal, The second terminal is connected to the microcomputer by wiring formed on the wiring board and used for input / output of data of the microcomputer, The third terminal is connected to the controller and the microcomputer by wiring formed on the wiring board, And the controller, the nonvolatile memory, the microcomputer, and the wiring board are enclosed in one package. In the nonvolatile memory device of claim 8, And a wiring formed on the wiring board connecting the controller and the nonvolatile memory device is connected to a fourth terminal. In the nonvolatile memory device of claim 8 or 9, And the fourth terminal is formed on the first surface of the wiring board. In the nonvolatile memory device of claim 8 or 9, The first terminal has a plurality of data terminals, The controller has a second operation mode for inputting data stored in the nonvolatile memory or outputting data stored in the nonvolatile memory using one of the plurality of data terminals. Device. In the nonvolatile memory device of claim 10, The first terminal has a plurality of data terminals, The controller has a second operation mode for inputting data stored in the nonvolatile memory or outputting data stored in the nonvolatile memory using one of the plurality of data terminals. Device. In the nonvolatile memory device of claim 8 or 9, And a wiring connecting the controller and the secure microcomputer and enabling communication between the controller and the secure microcomputer, the first surface of the wiring board being formed. In the nonvolatile memory device of claim 10, And a wiring connecting the controller and the secure microcomputer and enabling communication between the controller and the secure microcomputer, the first surface of the wiring board being formed. In the nonvolatile memory device of claim 11, And a wiring connecting the controller and the secure microcomputer and enabling communication between the controller and the secure microcomputer, the first surface of the wiring board being formed.

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