WO2006033155A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- WO2006033155A1 WO2006033155A1 PCT/JP2004/013929 JP2004013929W WO2006033155A1 WO 2006033155 A1 WO2006033155 A1 WO 2006033155A1 JP 2004013929 W JP2004013929 W JP 2004013929W WO 2006033155 A1 WO2006033155 A1 WO 2006033155A1
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- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- semiconductor device
- host device
- power supply
- extraction detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
- G06K19/07732—Physical layout of the record carrier the record carrier having a housing or construction similar to well-known portable memory devices, such as SD cards, USB or memory sticks
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07743—External electrical contacts
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
- G06K7/0056—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers housing of the card connector
- G06K7/0069—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers housing of the card connector including means for detecting correct insertion of the card, e.g. end detection switches notifying that the card has been inserted completely and correctly
Definitions
- the present invention relates to a semiconductor device such as a memory card or a card device represented by a multi-function card in which a microcomputer for an IC card is mounted on a nonvolatile memory chip, and in particular, a host device during operation.
- the present invention relates to a technology that is effective when applied to resolving inconveniences caused by power being extracted and power supply being cut off.
- Patent Document 1 describes that a detection terminal pulled down in a force device and a terminal pulled up in the card slot are used for detection of insertion and removal of the card device with respect to the card slot.
- the detection terminal contacts the corresponding terminal of the card slot and pulls the potential of the corresponding terminal inside the card slot to the ground. By detecting this on the card slot side, supply of operating power to the card device is started.
- the card device detection terminal is disconnected from the corresponding card slot terminal, and the corresponding terminal is set to the power supply voltage. By detecting this on the card slot side, the removed card is removed. Stop supplying power to the device.
- Patent Document 1 Japanese Patent Laid-Open No. 2000-99215 (FIG. 5)
- the above prior art does not take into account the inconvenience that occurs on the card side when the power is cut off by pulling out the card.
- the operation power supply is cut off while the data is being rewritten on the memory card equipped with the flash memory and the operation is interrupted, the data cannot be destroyed or recovered.
- the present inventor that there is a risk of serious characteristic deterioration.
- the over-erased state of the nonvolatile memory cell means, for example, until the erase verify operation.
- the state where the threshold voltage is lower than the threshold voltage distribution to be taken by the completed memory cell is V.
- a card device that is installed in a card slot (card socket) and receives supply of operating power
- the card device when the card device is pulled out from the card slot, it is separated from a predetermined terminal of the card slot before the power supply from the card slot is cut off. It detects the potential change that occurs at the detection terminal and instructs the termination process inside the card so that the termination process can be performed by itself before the power supply is completely shut off.
- An object of the present invention is to relatively easily secure a processing time for coping with power interruption caused by extraction from the host device, and to suppress deterioration of functions and characteristics against unexpected power interruption during operation.
- An object of the present invention is to provide a semiconductor device that can be easily performed.
- a semiconductor device includes an external interface terminal and a processing circuit, and includes a host It is removably mounted on the apparatus and receives the supply of operating power.
- the external interface terminal includes a power supply terminal, an extraction detection terminal, and other terminals.
- the power supply terminal is not connected to the host device after the extraction detection terminal is released.
- the power supply terminal has a length capable of maintaining contact with the corresponding terminal of the host device for a predetermined time or longer, and the power supply terminal is formed longer in the extraction direction than the extraction detection terminal.
- the processing circuit includes an interface control circuit connected to the external interface terminal, and a rewritable nonvolatile memory controlled by the interface control circuit, and the nonvolatile memory depends on a difference in threshold voltage of memory cells. The information is stored, and the interface control circuit performs a predetermined process on the non-volatile memory in the middle of the rewrite process from when the extraction detection terminal is disconnected from the corresponding terminal of the host device until the power is turned off. To complete.
- the power supply terminal is made longer in the extraction direction than the extraction detection terminal, it is easy to take a relatively long time until the power is shut off.
- the length of the power supply terminal can be increased by using two front and rear contact points on the host device side.
- a complicated improvement is required for the configuration of the connector terminal on the host device side. According to the above means, it is easy to secure the time required until the power is shut off, and the force does not require a complicated improvement to the configuration of the connector terminal on the host device side. It becomes easy to complete the necessary processing.
- the predetermined process is a process for aligning the threshold voltage of the memory cell with a predetermined threshold voltage distribution in a storage area in the middle of the threshold voltage initialization process. Even if the power is shut off during the operation, it is possible to suppress the remaining non-erased nonvolatile memory cells.
- the predetermined process is a process of completing information storage for the management area necessary for recognizing the storage area.
- FAT in file memory file 'allocation' table It is possible to suppress the situation that the storage area such as the sector becomes impossible due to the processing being interrupted while the area data is incomplete.
- the predetermined process is a process of completing information storage in the middle after the threshold voltage initialization process. Since the write process instructed on the host side can be completed after erasure, it is not necessary to perform a process such as write retry by turning on the power again.
- the power supply terminal is longer than the extraction detection terminal on the side opposite to the extraction direction, and extends beyond the extraction detection terminal.
- the length protruding in the opposite side is shorter than the length protruding in the extraction direction. This is effective when it is desired to lengthen the power supply terminal as much as possible.
- the interface control circuit detects the removal of the extraction detection terminal and instructs the non-volatile memory to perform the predetermined process.
- the interface control circuit instructs the predetermined processing to the non-volatile memory in response to a command supplied by the host device force when the extraction detection terminal is released from the corresponding terminal force of the host device.
- a semiconductor device has an external interface terminal and a processing circuit, is detachably mounted on the host device, and receives operation power.
- the external interface terminal has a power supply terminal, an extraction detection terminal, and other terminals.
- the power supply terminal is connected to the external interface terminal after the extraction detection terminal is detached from the corresponding terminal of the host device. . 5 meters For extraction speed of Z seconds, it has a length that allows contact with the corresponding terminal of the host device for 1.0 millisecond or more.
- the processing circuit includes an interface control circuit connected to the external interface terminal, and a rewritable nonvolatile memory controlled by the interface control circuit, and the nonvolatile memory stores information according to a difference in threshold voltage of memory cells. Memorize.
- the interface control circuit completes a predetermined process for the non-volatile memory in the middle of the rewrite process from when the extraction detection terminal is detached from the corresponding terminal of the host device until the power is shut off.
- the speed at which the semiconductor device is extracted from the host device is at most 2
- Push 'Push-type card socket is piled up against the elastic force of the panel and the semiconductor device is pushed further in and pushed out as it is The speed is taken into account.
- the processing time required to shut down the power was estimated to be 1 millisecond.
- the voltage application processing time required to shift the threshold voltage of the overerased nonvolatile memory cell to the normal erase threshold voltage distribution was considered.
- the predetermined process is a process of aligning the threshold voltage of the memory cell with a predetermined threshold voltage distribution in a storage area in the middle of the threshold voltage initialization process, or The process of completing the information storage for the management area necessary for the recognition of the storage area, or the predetermined process is a process of completing the information storage in the middle after the threshold voltage initialization process.
- the power supply terminal is longer than the extraction detection terminal on the side opposite to the extraction direction, and extends beyond the extraction detection terminal.
- the length protruding in the opposite side is shorter than the length protruding in the extraction direction.
- the interface control circuit detects the removal of the extraction detection terminal and instructs the nonvolatile memory to perform the predetermined processing.
- the interface control circuit instructs the predetermined processing to the non-volatile memory in response to a command supplied by the host device force when the extraction detection terminal is released from the corresponding terminal force of the host device.
- a semiconductor device has an external interface terminal and a processing circuit, is detachably mounted on the host device, and receives operation power.
- the external interface terminals are arranged in two rows in a direction crossing the extraction direction, and have a power supply terminal, an extraction detection terminal, and other terminals.
- the power supply terminals are arranged in the first to second rows.
- the extraction detection terminals are arranged in the first row, and the other terminals are arranged in the first row and the second row.
- the processing circuit includes an interface control circuit connected to the external interface terminal, and a rewritable nonvolatile memory controlled by the interface control circuit, and the nonvolatile memory is a threshold voltage of a memory cell. Information is stored according to the difference.
- the extraction detection terminal is disconnected from the corresponding terminal force of the host device and the power supply is cut off. By the time, the predetermined process is completed for the nonvolatile memory in the middle of the rewrite process.
- the external interface terminals are originally provided in two rows, if the power supply terminals are formed so as to extend from the first row to the second row, it takes a relatively long time until the power is shut off. Is easy.
- the card socket connector terminals are also originally at least two rows, so two contacts can be made stably with the two power supply terminals. It can easily cope with drought. The required processing time can be secured before the power is turned off.
- the predetermined process is a process of aligning the threshold voltage of the memory cell with a predetermined threshold voltage distribution in a storage area in the middle of the threshold voltage initialization process, or The process of completing the information storage for the management area necessary for the recognition of the storage area, or the predetermined process is a process of completing the information storage in the middle after the threshold voltage initialization process.
- the power supply terminal is longer than the extraction detection terminal on the side opposite to the extraction direction, and extends beyond the extraction detection terminal.
- the length protruding in the opposite side is shorter than the length protruding in the extraction direction.
- the interface control circuit detects the removal of the extraction detection terminal and instructs the non-volatile memory to perform the predetermined processing.
- the interface control circuit instructs the predetermined processing to the non-volatile memory in response to a command supplied by the host device force when the extraction detection terminal is released from the corresponding terminal force of the host device.
- a semiconductor device includes an external interface terminal and a processing circuit, is detachably attached to a host device, receives an operation power supply, and receives the external power supply.
- the interface terminal includes a power supply terminal, an extraction detection terminal, and other terminals.
- the power supply terminal is configured such that the extraction detection terminal is separated from the corresponding terminal force of the host device.
- the power supply terminal is formed longer in the extraction direction than the extraction detection terminal, and the processing circuit has the extraction detection terminal as a host. When the corresponding terminal force of the device is also removed, the necessary processing until the power is turned off is completed. Make it.
- the power supply terminal is not less than 1.0 millisecond for an extraction speed of 2.5 meters Z seconds after the extraction detection terminal is detached from the corresponding terminal of the host device. It should have a length that allows contact with the corresponding terminal.
- the external interface terminals are arranged in two rows in a direction crossing the extraction direction.
- the power supply terminal has a length spanning the first row force and the second row, and the extraction detection terminal Arranged in one row, the other terminals are arranged in the first and second rows, and the processing circuit waits until the power supply is shut off when the extraction detection terminal also removes the corresponding terminal force of the host device. Complete the required processing in the meantime.
- FIG. 1 is a schematic plan view showing a memory card according to an example of the present invention.
- FIG. 2 is a plan view showing an example of connection between an external interface terminal of a memory card and a connector terminal of a card slot in a mounted state.
- FIG. 3 is a plan view showing another example of connection between the external interface terminal of the memory card and the connector terminal of the card slot in the mounted state.
- FIG. 4 is a plan view showing still another example of connection between the external interface terminal of the memory card and the connector terminal of the card slot in the mounted state.
- FIG. 5 is a circuit diagram illustrating a circuit configuration for performing insertion / extraction detection by voltage detection.
- FIG. 6 is a circuit diagram illustrating a circuit configuration for performing insertion / extraction detection by current detection.
- FIG. 7 is a plan view showing an example in which external interface terminals are arranged in two rows.
- FIG. 8 is a plan view showing another example in which external interface terminals are arranged in two rows.
- FIG. 9 is a schematic plan view illustrating a memory card pop-up suppression mechanism.
- FIG. 10 is a plan view illustrating a circuit component mounting surface of a memory card.
- FIG. 11 is a block diagram of a memory card having a multifunction according to a second example of the present invention.
- FIG. 12 is a plan view illustrating an array of external interface terminals of the memory card of FIG. 11.
- FIG. 13 is a plan view showing an arrangement of external interface terminals that is different from FIG. 12 in that the antenna terminal is enlarged.
- FIG. 14 is a plan view illustrating an arrangement of external interface terminals that differs from FIG. 12 in that the front and rear arrangements of the antenna terminal and the second ground terminal are reversed.
- FIG. 15 is a plan view illustrating an arrangement of external interface terminals that is different from FIG. 13 in that the front and rear arrangements of the antenna terminal and the second ground terminal are reversed.
- FIG. 16 is a plan view illustrating an arrangement of external interface terminals that is different from FIG. 12 in that the second ground terminal is eliminated and the antenna terminal is lengthened accordingly.
- VCC Power supply terminal
- FIG. 1 illustrates a memory card according to an example of the present invention.
- the memory card 1 has a card board 4 on which the interface control circuit 2 and the flash memory 3 are mounted, the mounting surface is covered with the casing 5, and the external interface terminal is exposed on the surface opposite to the mounting surface. It is done.
- the wiring on the interface control circuit 2 and the flash memory 3 and the card substrate 4 is schematically shown.
- the external interface pins shown in FIG. 1 are the ground pin VSS, the power supply pin VCC, the second ground pin VSS2, the serial clock input pin SCLK, the insertion / extraction detection pin INS, the bus status pin BS, and the data pin DATO—DAT3.
- the ground terminal VSS, the power supply terminal VCC, and the second ground terminal VSS2 are coupled to the interface control circuit 2 and the flash memory 3 and used to supply operation power.
- Serial clock input terminal SCLK, insertion / extraction detection terminal INS, bus status terminal BS, and data terminal DATO—DAT3 are coupled to interface control circuit 2.
- the external interface terminal is connected to the card slot.
- the memory power 1 is supplied with power from the host device via the ground terminal VSS, the power supply terminal VCC, and the second ground terminal VSS2.
- Memory card 1 is reset to power-on when operating power is supplied.
- the interface control circuit 2 After the power-on reset, the interface control circuit 2 performs interface control according to a predetermined interface protocol with the host device, and performs memory interface control for file memory access to the flash memory 3. Do. In an operation mode that does not use the data terminals DAT1 to DAT3, DATO functions as a serial data input / output terminal (SDIO).
- SDIO serial data input / output terminal
- the flash memory 3 has a memory mat in which a large number of electrically erasable and writable nonvolatile memory cells are arranged in a matrix.
- the nonvolatile memory cell is not particularly limited, but includes a source (source line connection), a drain (bit line connection), a channel, a floating gate and a control gate (node line) stacked on each other and insulated from each other.
- the threshold voltage seen from the subsequent control gate differs between the erase process and the write process, and information is stored by this difference.
- the drain electrode of the nonvolatile memory cell is coupled to the corresponding bit line, and the source electrode is coupled to the corresponding source line.
- a selection level is given to the control gate of one of the non-volatile memory cells sharing the bit line through the first line, and the other non-volatile memory sharing the bit line.
- the non-selection level is applied to the control gate of the non-volatile memory cell via a word line, and the threshold voltage of the non-volatile memory cell to which the selection level is applied is lower or higher than the selection level.
- the logical value of the read data is determined.
- a normally-on non-volatile memory cell is a non-volatile memory cell having a threshold voltage lower than a non-selection level, that is, a non-volatile memory cell in an over-erased state.
- the interface control circuit 2 controls access to the flash memory 3 as a hard disk compatible file memory. For example, address management is performed so that the data area of the flash memory 3 can be accessed in units of sectors, and allocation of alternative sectors to defective sectors is controlled. When accessing the flash memory 3, the physical address is used to control access to the erase process, write process, and read process.
- the external interface terminal is not particularly limited, but is shaped by etching a conductive pattern on the card substrate 4.
- the second ground terminal VSS2, the serial clock input terminal SCLK, the insertion / extraction detection terminal INS, the bus status terminal BS, and the data terminal D ATO-DAT3 are each the same size and arranged in a line at equal intervals.
- direction A is the insertion direction when memory card 1 is installed in the host device.
- the ground terminal VSS and the power supply terminal VCC are formed long in the direction opposite to the insertion direction A.
- FIG. 2 illustrates the relationship between the external interface terminal of the memory card 1 and the connector terminal of the card slot.
- 10 is a connector terminal corresponding to the power supply terminal VCC
- 11 is a connector terminal corresponding to the ground terminal VSS
- 12-14 are serial clock input terminals SCLK, data terminal DAT3, and insertion / removal detection terminal INS on behalf of other external interface terminals INS
- the connector terminals corresponding to are shown.
- the contact point with the external interface terminal is the tip of each connector terminal 10-14.
- the contact points between the power supply connector terminals 10 and 11 and the power supply terminals VCC and V SS are the insertion direction A and the distance D with respect to the contact points with the external interface terminals 12-14 corresponding to the other connector terminals. Are away in the opposite direction.
- the power supply terminals VCC and VSS are connected to the corresponding connector terminals earlier than the other external interface terminals by the contact time corresponding to the distance D.
- the power supply terminals VCC and VSS are released from the corresponding connector terminals later than the other external interface terminals by the contact time corresponding to the distance D. In short, it is possible to delay the power shut-off by the contact time corresponding to the distance D after the other external interface terminals also release the card socket connector terminal force.
- the ground terminal VSS and the power supply terminal VCC as described above are formed long in the direction opposite to the insertion direction A, it is easy to take a relatively long time until the power is shut off. This On the other hand, in order not to change the arrangement of the connector terminal on the host device side, it is better to extend in the insertion direction (eight directions), but the extension distance is limited and the required processing time may not be secured. is there. In order to cope with this without changing the length and shape of the power supply terminal of the memory card, the length of the power supply terminal can be increased by setting the contact point with the connector terminal on the host device side to two places. Although substantially the same effect can be obtained, a complicated improvement is required in the configuration of the connector terminal on the host device side. Therefore, the ground terminal
- VSS and the power supply terminal VCC long in the direction opposite to the insertion direction A of the memory card 1, it is easy to secure the time required until the power supply is cut off, and the structure of the connector terminal on the host device side is also strong. Does not require complex improvements.
- FIG. 3 shows another example of the external interface terminal of the memory card and the connector terminal of the card slot.
- Two power supply terminals VCC-compatible connector terminals 10A and 10B are provided with a shifted tip, and two grounded VSS connector terminals 11A and 11B are also provided with a shifted tip.
- the shorter connector terminals 10A and 11A are said to be at the same position as the other connector terminals, and the longer connector terminals lOB and 11B have the distance D away from the distal end of the shorter connector terminals 10A and 11A.
- the power supply terminals VCC and VSS are connected to the corresponding connector terminals earlier than the other interface terminals by the contact time corresponding to the distance D. .
- the power supply terminals VCC and VSS are separated from the corresponding connector terminals later than the other interface terminals by the contact time corresponding to the distance D.
- the stability of power supply after memory card 1 is installed is improved. be able to.
- FIG. 4 shows another example of the external interface terminal of the memory card and the connector terminal of the card slot.
- Power supply terminals VCC-compatible connector terminals IOC, 10D are provided with two shifted ends, and ground terminals VSS-compatible connector terminals 11C, 11D are provided with two shifted ends.
- the connector terminals IOC and 11C are separated from the tip of the other connector terminals by a distance D, and the tips of the longer connector terminals 10D and 11D are further separated by a distance F from the tips of the shorter connector terminals IOC and 11C.
- power supply terminals VCC and VSS are at a distance D + from other external interface terminals Connect to the corresponding connector terminal earlier by the contact time corresponding to F.
- the power supply terminals VCC and VSS are released from the corresponding connector terminals later than the other interface terminals by the contact time corresponding to the distance D + F. In short, it is possible to delay the power shut-off by the contact time corresponding to the distance D + F after the other interface terminals also release the connector terminal force of the card socket.
- the memory card 1 is completely installed in the card socket, there is one power supply point for each of the power supply and ground, but the time difference can be increased by the distance D + F.
- the time difference can be obtained at the time of card insertion / removal.
- the power-on reset of the memory card is performed quickly with the time difference.
- an end process is performed to end the process halfway from the insertion / extraction detection to the power shutdown. Details of the termination process will be described later.
- the length of the power supply terminals 10 and 11 is determined in consideration of the time difference required for the latter end processing. According to the study of the present inventor, it is sufficient to assume that the maximum speed of extracting the memory card 1 from the host device is 2.5 meters Z seconds.
- Push 'Push-type card sockets are piled up with the elastic force of the panel, and the speed when the semiconductor device is pushed further out while being pushed in is considered.
- the processing time required to shut down the power was estimated to be 1 millisecond.
- the voltage application processing time required to shift the threshold voltage of the overerased nonvolatile memory cell to the normal erase threshold voltage distribution was considered.
- the necessary processing time can be secured before the power is turned off. That is, the power supply terminal is connected to the corresponding terminal of the host device for 1.0 millisecond or more with respect to the extraction speed of 2.5 meters Z seconds. It has a contactable length. For example, if the extraction speed is 2.5 meters Z seconds and the processing time required until the power is cut off is 1 millisecond, D in FIGS. 2 and 3 is 2.5 millimeters, and D + F in FIG. 2. Use 5 mm.
- FIG. 5 illustrates a circuit configuration for insertion / extraction detection.
- the connector terminal 14 of the card slot corresponding to the insertion / extraction detection terminal INS is pulled up through the resistor 21 inside the host device 23.
- the insertion / extraction detection terminal INS is connected to the ground terminals VSS and VSS2 through the resistor 22.
- Memory card 1 Pull out from the card slot by yourself
- the input of the amplifier 20 is coupled to the insertion / extraction detection terminal INS, and the output is determined using the output.
- Connector terminal 14 is pulled up to the supply voltage vcc in the floating state!
- the level is determined by the voltage dividing ratio of the resistors 21 and 22.
- the amplifier 20 has a level between the low level and the ground voltage vss as an input threshold voltage, and outputs a low level if the input voltage is lower than the input threshold voltage and a noise level if the input voltage is higher.
- FIG. 6 illustrates another circuit configuration for insertion / extraction detection.
- the connector terminal of the card slot corresponding to the insertion / extraction detection terminal INS is pulled up through the resistor 21 in the host device as in FIG.
- the insertion / extraction detection terminal INS is connected to the inverting input terminal (one) of the differential amplifier 24.
- the output terminal of the differential amplifier 24 is negatively fed back via the resistor 25 to the inverting input terminal (one).
- the ground terminals VSS and VSS2 are connected to the non-inverting input terminal (+) of the differential amplifier.
- This negative feedback differential amplifier 24 can detect the presence / absence of current supplied to the insertion / extraction detection terminal INS, which makes contact between the connector terminal of the host device and the insertion / extraction detection terminal INS of the memory card.
- FIG. 7 shows an example in which external interface terminals are arranged in two rows.
- TML is the second row external interface pin.
- the external interface terminal TML is, for example, an additional data terminal when the number of parallel data input / output bits is increased, or an interface terminal when the memory card 1 is equipped with a security IC card microcomputer.
- the external interface terminals in the first row are the same as in Figure 1.
- FIG. 8 shows another example in which external interface terminals are arranged in two rows.
- the difference from Fig. 7 is the arrangement of power supply terminals in the first row.
- the power supply terminals VSS and VCC are shifted by a distance G in the card insertion direction. This This is to increase the wiring space between them as much as possible when there is an inconvenience because the wiring space between them is reduced by adding the external interface terminal TML in the second row.
- the power supply terminals VSS and VCC are thicker than other external interface terminals. By doing so, the connector terminal can be easily manufactured when the connector terminal of the power supply terminal is composed of two contact points.
- FIG. 9 illustrates a memory card pop-up suppression mechanism. Notches 30-32 are formed on both sides of the memory card 1.
- leaf springs 33-35 that are in contact with the side surface of the memory card 1 are supported in a cantilever manner.
- the leaf springs 34 and 35 enter the notches 31 and 32 to position the memory card 1.
- the leaf spring 33 applies a pressing force to the side surface of the memory card 1.
- the card slot 23 has a so-called push / push configuration that allows card insertion / removal by a push-in operation, for example.
- the spring is compressed by the displacement of the memory card inserted against the pressing force of the spring and latched by the toggle latch, and then the memory card is pushed slightly in to release the toggle latch and release the spring.
- It has a structure that urges the memory card in the ejecting direction with elastic force.
- the force is also slightly pushed in the insertion direction and immediately after the urging force in the ejection direction is applied to the memory card (B).
- It elastically contacts the side surface of the card 1 and acts as a sliding resistance to suppress the memory card 1 from popping out vigorously. This also contributes to slowing the maximum speed when the memory card 1 is pulled out.
- the distance D and D + F are shortened.
- the termination process is, for example, a process (also referred to as a write process) for aligning the threshold voltages of the nonvolatile memory cells during the erase and erase verify process with a predetermined threshold voltage distribution.
- the instruction of the writing process for the flash memory 3 is performed by a reset signal (not shown).
- the flash memory 3 has a reset signal asserted during the erase and erase verify process.
- the writing process is performed. For example, if an erase process is performed on a nonvolatile memory cell in units of word lines in a flash memory, the write process is a process of performing a light write on a nonvolatile memory cell to be erased.
- Light write is a write process that shortens the write high voltage application time compared to the normal write process.
- the threshold of the memory cell whose threshold voltage is a negative voltage This is a process for increasing the value voltage to a positive voltage.
- the threshold voltage becomes a negative voltage, and the potential difference applied to the charge storage layer that accumulates charges in the memory cell. Since the value voltage becomes a positive voltage and becomes larger than the potential difference applied to the charge storage layer of the memory cell, the memory cell whose threshold voltage is a negative voltage is written earlier. Will be included.
- the write voltage is applied more than normal write processing.
- the time can be short.
- the memory card 1 processes itself so that no over-erased memory cells remain even if an undesired power cut occurs during data writing. It can be performed.
- the applied voltage should be increased as much as possible.
- Another end process is a process for completing information storage for the management area necessary for recognizing the storage area. It must be ensured that the FAT (file 'allocation' table) or sector management area in the file memory can be read on power-up.
- the sector management area stores the correspondence between logical addresses (sector addresses) and memory addresses, the validity of sectors, and alternative addresses for bad sectors.
- the termination process by completing the information storage in the FAT or sector management area regarding the sector to be rewritten, the process is interrupted while the data in such an area is incomplete, so that the storage area such as the sector is not recognized. The situation that becomes possible can be suppressed.
- the sector management area of the sector to be erased is also erased together with the sector erase, it is expected that the sector cannot be completely recognized unless this termination process is performed. If the end processing instruction is also given as a reset signal to the flash memory 3, When this reset signal is asserted, erase processing or writing If processing is in progress, an end process may be performed to complete information storage for the FAT or sector management area.
- Another end process is a process for completing information storage in the middle of the threshold voltage initialization process. For example, if an erase process or a write process is in progress when the reset signal is asserted, the write process for the sector being written is completed, and management information indicating that the sector is valid is set in the sector management area. To do. Since the write process instructed by the host can be completed after erasure, it is not necessary to perform a process such as a write retry by turning on the power again.
- the power supply terminals VCC and VSS are made longer than the extraction detection terminal INS in the extraction direction as described above, it is easy to take a relatively long time until the power is shut off. Therefore, it is not necessary to mount a power compensation capacitor between the power supply wiring connected to the power supply terminal VCC and the ground wiring connected to the ground terminal VSS in order to compensate the operation power supply when the power supply is cut off during operation. . Therefore, it does not require space for mounting the power compensation capacitor. Even if a small and relatively large capacitor can be obtained, it is not necessary to dare to use an inappropriate electric double layer capacitor to obtain a relatively large current.
- FIG. 10 shows a circuit component mounting surface of the memory card 1.
- the power supply wiring 36 and the ground wiring 37 are representatively shown as wiring.
- the power supply compensation capacitor is not connected between the power supply wiring 36 and the ground wiring 37.
- two decoupling capacitors 38 having a chattering reduction function are connected between the power supply wiring 36 and the ground wiring 37. Since the capacitor required for the decoupling capacitor 38 is small, it is not an area burden to mount it.
- FIG. 11 illustrates a block diagram of a memory card having a multi-function according to the second example of the present invention.
- the memory card 41 shown in the figure provides a multi-function such as an information storage function and a security function with encryption / decryption processing and authentication processing.
- Security functions include, for example, credit card payments and transportation Used for institutional billing.
- the memory card 41 includes a card controller 42 on a wiring board on which a plurality of external terminals are formed, and an electrically rewritable nonvolatile storage device connected to the card controller 42 with an internal node 45.
- a flash memory 43 and an IC (integrated circuit) card microcomputer (also referred to as an IC card microcomputer) 44 as a security controller connected to the card controller 42 via an internal bus 46 are mounted.
- the card controller 42, the flash memory 43, and the IC card microcomputer 44 are each composed of individual semiconductor integrated circuit chips.
- the card controller 42 uses, for example, an external interface function as a memory card compliant with the multimedia card standard, a memory interface function for accessing the flash memory as a file memory according to its specifications, and a memory card command. It has an IC card microcomputer interface device that interfaces with a microcomputer.
- the flash memory 43 has nonvolatile memory cells that are electrically erasable and writable, although not particularly shown.
- the nonvolatile memory cell is not particularly shown, but a so-called stacked gate structure having a floating gate, or a so-called split transistor having a memory transistor portion having an ONO (oxide “nitride” oxide) gate insulating film and a select transistor portion. It has a gate structure.
- ONO oxide “nitride” oxide
- the threshold voltage increases when electrons are injected into the floating gate or the like, and the threshold voltage decreases when electrons are extracted from the floating gate or the like.
- the nonvolatile memory cell stores information corresponding to the level of the threshold voltage with respect to the word line voltage for reading data.
- the flash memory 43 reads information stored in the nonvolatile memory cell, stores information in the nonvolatile memory cell (for example, writes), and initializes the storage information in the nonvolatile memory cell ( For example).
- the IC card microcomputer 44 includes a CPU, a non-volatile memory for storing the operation program and control information used for authentication, and the authentication process and the encryption / decryption process according to the operation program.
- the IC card microcomputer 44 should be one that performs contact interface with the outside alone, one that performs non-contact interface, or one that performs dual interface capable of both interfaces. Can do.
- a non-contact interface is adopted, and for example, data input / output, clock input, and reset signal input are performed by high-frequency communication using an antenna that connects the terminals LA and LB.
- the IC card microcomputer 44 operates with power supplied from the antenna connected to the antenna terminals (LA, LB).
- the memory card 41 has external terminals C1, C5, C6, C6A, C6B, C7-C13 as external interface terminals.
- C1 is the data terminal DAT3
- C7—C9 is the data terminal DATO—DAT2
- CIO—C13 is the data terminal DAT4—DAT7
- C2 is the command terminal CMD
- C5 is the clock terminal CLK and C4 are power supply terminals VCC
- C3 is a ground terminal VSS
- C6 is a second ground terminal VSS2
- C6A and C6B are antenna terminals LA and LB.
- the second ground terminal VSS2 is used for force card insertion / removal detection in the memory card.
- FIG. 12 illustrates an array of external interface terminals of the memory card 41.
- the external interface terminals are formed in two rows in a direction crossing the insertion direction A of the memory card 41.
- the power supply terminals VSS and VCC are formed across two rows.
- the card slot connector terminals corresponding to the interface terminals in the first row are more forward in the card insertion direction than those corresponding to the interface terminals in the second row.
- the power supply terminals VCC and VSS are formed so as to straddle the first row force and the second row, it may take a relatively long time until the power is cut off. Easy.
- the card slot connector terminals are originally at least two rows, so it is easy to make contact with the power supply terminals VSS and VCC in two each. Therefore, it is possible to easily cope with the stability of power supply.
- no insertion / extraction detection terminal is provided as a dedicated terminal.
- the second ground terminal VSS2 is used for insertion / extraction detection. That is, the power supply terminal VCC and the second ground terminal VSS2 are connected with high resistance.
- the level of the second ground terminal VSS2 becomes the ground potential.
- the second ground terminal VSS2 is set to the “No” level until the power connector terminal force of the hard socket corresponding to the power supply terminal VCC is also released.
- the card controller 42 can recognize the removal of the card.
- the card controller 42 performs the termination process in the same manner as described above before the power is turned off.
- the antenna terminals LA and LB and the second ground terminal VSS2 are divided into regions having the size of the interface terminal in the first column represented by the clock terminal CLK in the first column.
- the IC card microcomputer 44 of the memory card 41 is a non-contact interface.
- the antenna terminals LA and LB and the second ground terminal VSS2 is one second ground pin VSS2. Therefore, by using the terminal area of the size of the second ground terminal for such a non-contact interface non-compatible memory card, the non-contact interface compatible memory card having two antenna connection terminals LA and LB. 41.
- the area where the two antenna connection terminals LA and LB are formed has a data input / output function by an antenna, and is a region where a second ground terminal is formed in a memory force that does not support a non-contact interface. It corresponds to.
- the antenna connection terminals LA and LB When a memory card compatible with the non-contact interface is inserted into the card slot for a memory card that does not support the non-contact interface, the antenna connection terminals LA and LB must be connected to the connector terminal for supplying ground potential within the card slot. become. Since the ground potential has no AC component, that is, no signal component, there is no problem in the operation of the memory card. On the other hand, the potential does not fluctuate greatly even if high-frequency components are superimposed on the ground potential by the antenna connection terminals LA and LB.
- the signal connector terminal on the card slot side must be connected to the antenna connection terminals LA and LB. There is no inconvenience due to. Also, when a memory card that does not support contactless interface is inserted into the card slot for contactless interface, the antenna connection connector terminal of the card slot connects to the ground connector terminal of the memory card that does not support contactless interface. Therefore, there is no inconvenience due to antenna short-circuiting because the antenna short-circuiting force S, the electromotive force generated by the antenna is small, and the output impedance of the antenna is large. As shown in FIG.
- the antenna connection terminals LA and LB are connected to the IC card microcomputer 44 via an AC coupling capacitive element Cac.
- Antenna connection terminal Connector for ground potential of card slot that does not support contactless interface for LA and LB forces It is ensured that the direct current component is not superimposed on the ground potential via the, and that the transmission of the signal component from the antenna is not hindered.
- the arrangement of the external interface terminals of the memory card 41 shown in FIG. 13 is different from FIG. 12 in that the antenna terminals LA and LB are large.
- the arrangement of the external interface terminals of the memory card 41 shown in FIG. 14 is different from that of FIG. 12 in that the arrangements of the antenna terminals LA and LB and the second ground terminal VSS2 are reversed.
- the arrangement of the external interface terminals of the memory card 41 shown in FIG. 15 is different from that of FIG. 13 in that the arrangement of the antenna terminals LA, LB and the second ground terminal VSS2 is reversed.
- 16 is different from FIG. 12 in that the second ground terminal VSS2 is eliminated and the antenna terminals LA and LB are lengthened accordingly.
- the definition of “erase” write may be reversed.
- the information stored in the nonvolatile memory cell is not limited to two values, but may be four or more values.
- the functions and names of the external interface terminals of the memory card are not limited to the above description and can be changed as appropriate.
- the memory card may be equipped with a data processing device other than the IC card microcomputer.
- the instruction of the termination process for the flash memory is not limited to the case of using the reset signal, and other signals and commands may be used.
- the processing circuit is not limited to the interface control circuit and the flash memory.
- the flash memory is not limited to the one used exclusively for information storage, and may be a flash memory constituting a programmable logic array.
- the termination process is not limited to the write-back process, the management information write completion process, or the completion of the intermediate write operation, and may be other processes. Also, a decoupling capacitor must be provided! /, Not a thing! /.
- the present invention can be widely applied to semiconductor devices that are equipped with a non-volatile memory that can rewrite stored information and a control circuit thereof and that are supplied with an external power source.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Artificial Intelligence (AREA)
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- Techniques For Improving Reliability Of Storages (AREA)
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Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/550,578 US7549593B2 (en) | 2004-09-24 | 2004-09-24 | Semiconductor device |
| JP2006536287A JP4327203B2 (ja) | 2004-09-24 | 2004-09-24 | 半導体装置 |
| PCT/JP2004/013929 WO2006033155A1 (ja) | 2004-09-24 | 2004-09-24 | 半導体装置 |
| TW094131842A TWI408607B (zh) | 2004-09-24 | 2005-09-15 | 半導體裝置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/013929 WO2006033155A1 (ja) | 2004-09-24 | 2004-09-24 | 半導体装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006033155A1 true WO2006033155A1 (ja) | 2006-03-30 |
Family
ID=36089922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/013929 Ceased WO2006033155A1 (ja) | 2004-09-24 | 2004-09-24 | 半導体装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7549593B2 (ja) |
| JP (1) | JP4327203B2 (ja) |
| TW (1) | TWI408607B (ja) |
| WO (1) | WO2006033155A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022551284A (ja) * | 2019-10-04 | 2022-12-08 | エルジー イノテック カンパニー リミテッド | Nandフラッシュメモリ素子の制御装置及びその制御方法 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4333763B2 (ja) * | 2007-03-26 | 2009-09-16 | コニカミノルタビジネステクノロジーズ株式会社 | 画像処理装置、記憶領域の管理方法、およびコンピュータプログラム |
| KR20080106731A (ko) * | 2007-06-04 | 2008-12-09 | 타이코에이엠피 주식회사 | 카드 검출장치 및 그 방법 |
| JP2016143029A (ja) * | 2015-02-05 | 2016-08-08 | シナプティクス・ディスプレイ・デバイス合同会社 | 半導体装置及び携帯端末 |
| JP7074453B2 (ja) * | 2017-10-30 | 2022-05-24 | キオクシア株式会社 | メモリシステムおよび制御方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375977U (ja) * | 1986-11-05 | 1988-05-20 | ||
| JPH03187169A (ja) * | 1989-12-15 | 1991-08-15 | Fujitsu General Ltd | Icカードの接続装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62105293A (ja) * | 1985-10-31 | 1987-05-15 | Toshiba Corp | 携帯可能記録媒体の読取・書込装置 |
| JPH1013312A (ja) * | 1996-06-20 | 1998-01-16 | Sony Corp | データ処理装置および方法、並びに、送受信装置および方法 |
| JP2000099215A (ja) | 1998-09-25 | 2000-04-07 | Ricoh Co Ltd | Pcカードのインタフェース |
| JP4480723B2 (ja) | 2004-09-24 | 2010-06-16 | 株式会社ルネサステクノロジ | メモリカード及び半導体装置 |
-
2004
- 2004-09-24 JP JP2006536287A patent/JP4327203B2/ja not_active Expired - Fee Related
- 2004-09-24 WO PCT/JP2004/013929 patent/WO2006033155A1/ja not_active Ceased
- 2004-09-24 US US10/550,578 patent/US7549593B2/en active Active
-
2005
- 2005-09-15 TW TW094131842A patent/TWI408607B/zh not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375977U (ja) * | 1986-11-05 | 1988-05-20 | ||
| JPH03187169A (ja) * | 1989-12-15 | 1991-08-15 | Fujitsu General Ltd | Icカードの接続装置 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022551284A (ja) * | 2019-10-04 | 2022-12-08 | エルジー イノテック カンパニー リミテッド | Nandフラッシュメモリ素子の制御装置及びその制御方法 |
| JP7660107B2 (ja) | 2019-10-04 | 2025-04-10 | エルジー イノテック カンパニー リミテッド | Nandフラッシュメモリ素子の制御装置及びその制御方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006033155A1 (ja) | 2008-05-15 |
| TW200622918A (en) | 2006-07-01 |
| US7549593B2 (en) | 2009-06-23 |
| US20060249580A1 (en) | 2006-11-09 |
| JP4327203B2 (ja) | 2009-09-09 |
| TWI408607B (zh) | 2013-09-11 |
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