CN101105974A - Non-volatile memory device and control method thereof - Google Patents

Abstract

The invention relates to a non-volatile memory device and its control method, utilize the identification code of the memory cell itself, produce the control signal, make the power control and switching circuit in the power management unit can control the second boost circuit to raise the voltage reference of the external voltage according to the voltage reference of control signal and external voltage, or control the second voltage regulation to stabilize or reduce the voltage reference of the external voltage, in order to accord with the voltage reference required for operation of the memory cell, thus can support the memory cell of different specifications.

Description

Non-volatile storage device and control method thereof

technical field

The invention relates to a storage device, in particular to a non-volatile storage device and a control method thereof.

Background technique

Non-volatile memory storage apparatus (non-volatile memory storage apparatus), such as memory card (memory card), is increasingly miniaturized; its application is becoming more and more extensive, and it is gradually widely used by portable devices. In order to meet the needs of portable applications, such as "mobile phones", the size of the memory storage device is becoming thinner and smaller, and its power consumption is reduced; to meet the needs of users who want to reduce the size of the product and extend the battery life . Therefore, there are new products that not only have the function of adjusting the power supply voltage of the memory storage device, but also have the development of adjusting the interface signal level.

Please refer to FIG. 1 , which is a functional block diagram of a prior art power management unit. Wherein, the power management unit 110 controls the voltage boosting circuit 112 to boost the voltage according to the inherent detection voltage in the voltage detector 114, or controls the voltage stabilizing circuit 111 to stabilize or lower the voltage to supply the storage unit (not shown) required for operation. Wherein, the detection voltage is higher than the minimum working voltage of the storage unit and lower than its own working voltage V _DD . Since each storage unit has its unique operating voltage range, if the power management unit 110 can only adjust the external voltage VEXT according to the inherent detection voltage, and when storage units with different specifications are used in the non-volatile storage device, the power management unit 110 will not be able to support storage units of different specifications, resulting in limited application range of non-volatile storage devices.

Contents of the invention

The technical problem to be solved by the present invention is to provide a non-volatile storage device and its control method, which uses the identification code of the storage unit itself to generate a control signal, so that the power management unit can control according to the control signal and the voltage level of the external voltage. The voltage level of the external voltage is adjusted to meet the voltage level required for the operation of the storage unit, and in this way, storage units with different specifications can be supported.

In order to achieve the above object, the present invention provides a non-volatile storage device, which is characterized in that it includes: a power management unit, used to receive an external voltage output by an application device, and according to a control signal, the external voltage After adjustment, output a first working voltage and a second working voltage; the storage unit is connected to the power management unit to receive the second working voltage to provide digital information storage; and the control unit is connected to the power supply The management unit and the storage unit are used to receive the first working voltage to activate internal functions, receive the external voltage to adjust the voltage level of an external signal transmitted between the application device, and receive the second working voltage , to adjust the voltage level of an internal signal transmitted between the storage unit; wherein, the control unit provides the control signal according to an identification code in the storage unit, so that the second operating voltage meets the requirements of the storage unit .

The above-mentioned non-volatile storage device is characterized in that the control unit includes a system interface and a memory interface.

The above-mentioned non-volatile storage device is characterized in that the system interface is connected to the application device to receive the external voltage as an external reference voltage, and make the voltage level of the external signal conform to the voltage level of the external voltage .

The above-mentioned non-volatile storage device is characterized in that the memory interface is connected to the storage unit to receive the second operating voltage as an internal reference voltage, and make the voltage level of the internal signal conform to the second operating voltage voltage level.

The above-mentioned non-volatile storage device is characterized in that the control unit further includes a data processing device, and the data processing device is used to process data exchange between the storage unit and the application device according to a control program.

The above-mentioned non-volatile storage device is characterized in that the power management unit further includes: a power control and switching circuit, which determines the voltage level of the second working voltage according to the control signal and a detection signal; circuit, one of the voltage stabilizing circuits adjusts the external voltage to the first working voltage required for the operation of the control unit, and the other voltage stabilizing circuit adjusts the external voltage to the storage unit according to the control of the power supply control and the switching circuit. The required second working voltage; a boost circuit, according to the control of the power supply control and switch circuit, boost the external voltage to the voltage level required by the storage unit; and a voltage detection circuit, connected to the The power control and switch circuit is used to detect the voltage level of the external voltage to generate the detection signal.

The above-mentioned non-volatile storage device is characterized in that the external voltage is a power supply voltage of the non-volatile storage device.

The present invention also provides a power management unit of a non-volatile storage device with dual interface signal levels, characterized in that the power management unit includes:

A power supply control and switch circuit, according to a control signal and a detection signal, to determine the voltage level of a second working voltage to meet the requirements of a storage unit in the non-volatile storage device;

Two voltage stabilizing circuits, one of which adjusts a power supply voltage of the non-volatile storage device to a reference voltage level of an external signal transmitted between an application device connected to the non-volatile storage device According to the control of the power supply control and switching circuit, another voltage stabilization circuit adjusts the power supply voltage to the reference voltage level of an internal signal transmitted between a storage unit connected to the non-volatile storage device ;

a boost circuit, which adjusts the power supply voltage to the reference voltage level of the internal signal according to the control of the power supply control and the switch circuit; and

A voltage detection circuit, connected to the power control and switching circuit, is used to detect the voltage level of the power supply voltage to generate the detection signal.

The present invention also provides a control method for adjusting voltage and signal level of a non-volatile storage device, which is characterized in that it includes: adjusting an external voltage of the non-volatile storage device to generate a first operating voltage to supply the non-volatile storage device The non-volatile storage device is used to process the needs of computing data; an identification code is obtained from a storage unit of the non-volatile storage device to adjust the external voltage and generate a second operating voltage to supply the non-volatile storage The device adjusts the voltage level of an internal signal and stores digital information; according to the external voltage, adjusts the voltage level of an external signal output by the non-volatile storage device to meet the voltage level of the external voltage ; and according to the second working voltage, adjusting the voltage level of the internal signal transmitted inside the non-volatile storage device to conform to the voltage level of the second working voltage.

The control method for adjusting the voltage and signal level of the above-mentioned non-volatile storage device is characterized in that it further includes: obtaining the identification code from the storage unit; generating a control signal according to the identification code; generating a control signal according to the control signal and a detection signal to adjust the external voltage to generate the second working voltage.

The above-mentioned control method for adjusting voltage and signal level of a non-volatile storage device is characterized in that it further includes judging the voltage level of the external voltage according to the detection signal, so as to determine whether to step up, step down or stabilize the voltage. voltage action to provide the second operating voltage.

The control method for adjusting the voltage and signal level of the above-mentioned non-volatile storage device is characterized in that when the external voltage is lower than the operating range, the voltage level of the external voltage is increased, and when the external voltage is greater than the operating range , reducing the voltage level of the external voltage, and stabilizing the voltage level of the external voltage when the external voltage is within the operating range.

The above-mentioned control method for adjusting voltage and signal level of a non-volatile storage device is characterized in that the step of generating the second operating voltage includes: providing the minimum value of the second operating voltage supported by the non-volatile storage device to the A storage unit and a control unit; obtain the identification code in the storage unit; judge whether the type of the storage unit is correctly identified according to the identification code, so as to determine whether to adjust the second operating voltage from small to large to meet The storage unit is required.

The above-mentioned control method for adjusting the voltage and signal level of the non-volatile storage device is characterized in that, when the type of the storage unit cannot be correctly identified, it means that the second working voltage is not the working voltage of the storage unit, and a small The voltage level of the second working voltage is adjusted to a maximum, and when the type of the storage unit is correctly identified, it means that the second working voltage is the working voltage of the storage unit.

The above-mentioned control method for adjusting the voltage and signal level of the non-volatile storage device is characterized in that when the second operating voltage has been adjusted to the maximum value supported by the non-volatile storage device, and the type of the storage unit cannot be identified , it means that the non-volatile storage device does not support the storage unit, and stops adjusting the second operating voltage.

The control method for adjusting the voltage and signal level of the above-mentioned non-volatile storage device is characterized in that the external signal is transmitted between a control unit of the non-volatile storage device and an application device, and the internal signal is transmitted between the Between the control unit and the storage unit, the external signal and the internal signal are independently adjusted.

The control method for adjusting the voltage and signal level of the above-mentioned non-volatile storage device is characterized in that the external signal is transmitted between a system interface of the control unit and the application device, and is adjusted by the system interface. The signal is transmitted between a memory interface of the control unit and the storage unit, and is adjusted by the memory interface.

The present invention also provides a control method for adjusting voltage and signal level of a non-volatile storage device, which is characterized in that it includes: obtaining an identification code from a storage unit; generating a control signal according to the identification code; The control signal and a detection signal provide the minimum value of a second operating voltage supported by the non-volatile storage device to the storage unit and a control unit; adjust the external voltage according to whether the type of the storage unit is correctly identified , so that the second working voltage meets the requirements of the storage unit.

The above-mentioned control method for adjusting the voltage and signal level of the non-volatile storage device is characterized in that, when the type of the storage unit cannot be correctly identified, it means that the second working voltage is not the working voltage of the storage unit, and a small The voltage level of the second working voltage is adjusted to a maximum, and when the type of the storage unit is correctly identified, it means that the second working voltage is the working voltage of the storage unit.

The above-mentioned control method for adjusting the voltage and signal level of the non-volatile storage device is characterized in that when the second operating voltage has been adjusted to the maximum value supported by the non-volatile storage device, and the type of the storage unit cannot be identified , it means that the non-volatile storage device does not support the storage unit, and stops adjusting the second operating voltage.

The control method for adjusting the voltage and signal level of the above-mentioned non-volatile storage device is characterized in that it also includes judging whether the external voltage conforms to an operating range of the storage unit according to the detection signal, so as to determine whether to boost the voltage, step-down or voltage-stabilizing action to provide the second working voltage.

The control method for adjusting the voltage and signal level of the above-mentioned non-volatile storage device is characterized in that when the external voltage is lower than the operating range, the voltage level of the external voltage is increased, and when the external voltage is greater than the operating range , reducing the voltage level of the external voltage, and stabilizing the voltage level of the external voltage when the external voltage is within the operating range.

Effect of the present invention is as follows:

1) Not only can the storage unit operate stably when the external voltage is out of the operating range of the storage unit, but also the non-volatile storage device can support a variety of storage units with different specifications.

2) Using the identification codes in each storage unit with different specifications to adjust the second working voltage to meet the needs of the operation of the storage unit.

3) According to the control signal corresponding to the identification code in the storage unit and the detection signal corresponding to the external voltage, the power management unit decides whether to boost, stabilize or lower the external voltage to meet the operation of the storage unit required.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the functional block diagram of the power management unit of prior art;

2 is a schematic block diagram of a non-volatile storage device according to the present invention;

FIG. 3 is a schematic block diagram of a power management unit of the present invention; and

FIG. 4 is a flow chart of identifying a storage unit to adjust a second operating voltage according to the present invention.

Among them, reference signs:

10 Application pack 20 Non-volatile storage device

21 storage device controller 110, 210 power management unit

211 The first voltage stabilizing circuit 212 The second boosting circuit

213 Second voltage stabilizing circuit 214 Voltage detection circuit

215 Power control and switch circuit 114 Voltage detector

112 Boost circuit 111 Voltage regulator circuit

220 Control unit 221 System interface

222 Data processing device 223 Memory interface

22 storage units

Detailed ways

Please refer to FIG. 2 , which is a schematic block diagram of the non-volatile storage device of the present invention. The non-volatile storage apparatus 20 includes a storage controller 21 and a memory unit 22 . The storage device controller 21 is connected to the application device 10 outside the non-volatile storage device 20 to receive the external voltage V _S provided by the application device 10 for the operation of the non-volatile storage device 20, And as a bridge for transmitting digital information between the non-volatile storage device 20 and the application device 10 . The storage unit 22 is connected to the storage device controller 21 for storing the digital information input by the application device 10. The storage unit 22 may be a non-volatile memory unit, ie at least includes one non-volatile memory. Wherein, the external voltage Vs is the power supply voltage of the non-volatile storage device 20 .

The storage device controller 21 includes a power management unit 210 and a control unit 220 . The power management unit 210 is connected between the application device 10 and the storage unit 22, and is used to adjust the received external voltage V _S to conform to the storage unit 22 according to the specification of the storage unit 22 and the control signal V _C provided by the control unit 220. The voltage level required for the operation of the unit 22 is the second operating voltage V _OP2 . In addition, the power management unit 210 supplies the external voltage V _S to the control unit 220 after being regulated, so as to maintain the operation requirement of the control unit 220 , that is, the first operating voltage V _OP1 .

The control unit 220 includes a system interface (system interface) 221 , a data processing device (processing device) 222 and a memory interface (memory interface) 223 . Wherein, the system interface 221 is connected to the application device 10 , the memory interface 223 is connected to the storage unit 22 , and the data processing device 222 is connected to the system interface 221 and the memory interface 223 . The data processing device 222 is used for processing data exchange between the storage unit 22 and the application device 10 according to the control program in the control unit 220 .

Since the second operating voltage V _OP2 may be different from the external voltage V _S , the voltage level V _INT of the internal signal transmitted between the storage unit 22 and the memory interface 223 is greater than the voltage level of the external signal transmitted between the application device 10 and the system interface 221 Quasi-V _EXT . In order to enable the storage unit 22 and the application device 10 to correctly and stably identify the voltage level V _INT of the internal signal and the voltage level V _EXT of the external signal when the external signal and the internal signal are transmitted, the control unit 220 must internally The reference voltages of the two groups of interfaces (the system interface 221 and the memory interface 223 ) are separated independently. That is to say, the system interface 221 must use the external voltage V _S provided by the application device 10 as the external reference voltage V _ER , so that the voltage level V _EXT of the external signal conforms to the voltage level of the external voltage V _S. The memory interface 223 must According to the second operating voltage V _OP2 as the internal reference voltage V _IR , the voltage level V _INT of the internal signal conforms to the voltage level of the second operating voltage V _OP2 .

In addition, each storage unit 22 provided by each supplier contains different specifications or information, so each storage unit 22 contains a unique identification code. According to the embodiment of the present invention, even if the storage unit 22 is replaced to be used in a different non-volatile storage device 20 , the stable operation of the non-volatile storage device 20 can still be ensured.

Please refer to FIG. 3 , which is a schematic block diagram of the power management unit of the present invention. The power management unit 210 includes a first voltage stabilizing circuit 211 , a second voltage boosting circuit 212 , a second voltage stabilizing circuit 213 , a voltage detection circuit 214 and a power control and switching circuit 215 .

The first voltage stabilizing circuit 211 is connected to the application device 10 for receiving the external voltage V _S provided by the application device 10 to further stabilize or reduce the voltage level of the external voltage V _S and supply the first necessary for the operation of the control unit 220. An operating voltage V _OP1 . The second voltage stabilizing circuit 213 is connected to the application device 10, and is used to determine whether to receive the external voltage Vs provided by the application device 10 according to the control of the power supply control and the switch circuit 215, and to stabilize or reduce the voltage level of the external voltage Vs. , so as to generate the second operating voltage V _OP2 to supply the operation requirements of the storage unit 22 and the requirements of the control unit 220 to adjust the voltage level V _INT of the internal signal.

The second boost circuit 212 is connected to the application device 10, and is used to determine whether to receive the external voltage Vs provided by the application device 10 according to the power control and the control of the switch circuit 215, and to increase the voltage level of the external voltage Vs, so as to The second operating voltage V _OP2 is generated to supply the requirements for the storage unit 22 to work and the control unit 220 to adjust the voltage level V _INT of the internal signal.

The voltage detection circuit 214 is connected to the application device 10 for detecting the voltage level of the external voltage V _S provided by the application device 10 and generating a detection signal to provide the power control and switching circuit 215 as a reference for power control.

The power control and switching circuit 215 is connected to the control unit 220 and the storage unit 22, and is used to determine the output second operating voltage V _OP2 according to the control signal Vc input by the control unit 220 and the detection signal input by the voltage detection circuit 214. It is provided by the second voltage boosting circuit 212 , or provided by the second voltage stabilizing circuit 213 , and determines whether the external voltage Vs received by the power management unit 210 needs to be boosted, stabilized or buckled.

Please refer to FIG. 4 , which is a flow chart of identifying a storage unit to adjust a second operating voltage according to the present invention. After the non-volatile storage device 20 connected to the application device 10 is activated, the application device 10 starts to supply the external voltage Vs, as in step S310.

At this time, the first voltage stabilizing circuit 211 in the power management unit 210 receives the external voltage Vs supplied by the application device 10, and adjusts the external voltage Vs to the first operating voltage V _OP1 required by the operation of the control unit 220, so that the control The unit 220 can use the first operating voltage V _OP1 to promote its internal operations, such as processing the data exchange between the application device 10 and the storage unit 22, and adjusting the voltage levels V _INT and V _EXT of internal signals and external signals respectively to meet The voltage levels of the second operating voltage V _OP2 and the external voltage Vs, etc., as in step S320 .

After the power management unit 210 provides the first operating voltage V _OP1 required for the operation of the control unit 220, the control unit 220 will first output a control signal Vc to the power control and switching circuit 215 in the power management unit 210, so that the power control and switching According to the control signal Vc and the detection signal, the circuit 215 decides to adjust the external voltage Vs to the minimum second operating voltage V _OP2 supported by the non-volatile storage device 20 by the second voltage stabilizing circuit 213 to supply the storage unit 22, such as Step S330.

When the storage unit 22 supplies the minimum second operating voltage V _OP2 to the storage unit 22 , the control unit 220 can drive its internal memory interface 223 to read the identification code stored in the storage unit 22 , as in step S340 . Wherein, each storage unit 22 provided by each supplier contains different specifications or information, so each storage unit 22 contains a unique identification code.

When the memory interface 223 obtains the identification code from the storage unit 22, the control unit 220 will further judge whether the obtained identification code can be correctly identified, that is, when the manufacturer and product specification of the storage unit 22 can be identified When waiting for information, it means that the second operating voltage V _OP2 at this time can successfully drive the storage unit 22. When the information such as the manufacturer and product specifications of the storage unit 22 cannot be recognized, or even garbled characters appear, it means that the second operating voltage V OP2 at this time can successfully drive the storage unit 22. The operating voltage V _OP2 cannot successfully drive the storage unit 22 , as in step S350 .

According to step S350, when the control unit 220 cannot correctly identify the identification code in the storage unit 22, it further judges whether the second operating voltage V _OP2 at this time has reached the second operation that the non-volatile storage device 20 can support. The maximum value of the voltage V _OP2 , as in step S352.

According to step S352, when the second operating voltage V _OP2 at this time has not yet reached the maximum value of the second operating voltage V _OP2 that the non-volatile storage device 20 can support, it means that the specification of the storage unit 22 may be in the non-volatile within the range supported by the storage device 20. Therefore, the control unit 220 will generate a new control signal Vc to the power control and switch circuit 215 of the power management unit 210 according to this identification information, so that the power control and switch circuit 215 can be controlled according to the detection signal and the new control signal Vc. The second boost circuit 212 boosts the voltage level of the external voltage Vs to provide an updated second operating voltage V _OP2 , so that the memory interface 223 can continue to try to obtain the correct identification code, as in step S354 .

According to step S352, when the second operating voltage V _OP2 at this time has reached the maximum value of the second operating voltage V _OP2 that the non-volatile storage device 20 can support, it means that the specification of the storage unit 22 is not in the non-volatile storage Therefore, the control unit 220 ends the procedure of detecting the identification code, and the power management unit 210 cannot correctly set the appropriate second operating voltage V _OP2 to supply the operation of the storage unit, such as Step S380.

According to step S350 , when the control unit 220 can correctly identify the identification code in the storage unit 22 , it means that the specification of the storage unit 22 is within the range supported by the non-volatile storage device 20 . The control unit 220 will generate a new control signal Vc to the power control and switch circuit 215 according to the identification information, so as to control the second voltage boosting circuit 212 or the second voltage stabilizing circuit 213 to adjust the external voltage Vs to generate a suitable second voltage. The operating voltage V _OP2 is used to supply the operation of the storage unit 22 , as in step S360 .

That is to say, when the external voltage Vs is lower than the second operating voltage V _OP2 required for the operation of the storage unit 22, the power control and switching circuit 215 will control the second boost circuit 212 to increase the voltage level of the second operating voltage V _OP2 Standard, to meet the needs of the storage unit 22 operation. When the external voltage Vs meets the second operating voltage V _OP2 required for the operation of the storage unit 22 , the power control and switching circuit 215 controls the second voltage stabilizing circuit 213 to perform voltage stabilizing action. When the external voltage Vs is greater than the second operating voltage V _OP2 required for the operation of the storage unit 22, the power control and switching circuit 215 will control the second voltage stabilizing circuit 213 to reduce the voltage level of the second operating voltage V _OP2 to meet The storage unit 22 is required for operation.

When the second operating voltage V _OP2 meets the operation requirements of the storage unit 22 , it means that the setting of the second operating voltage V _OP2 has been completed, and the control unit 220 can end the procedure of detecting the identification code, as in step S370 .

In this way, not only can the storage unit 22 operate stably when the external voltage Vs deviates from the operating range of the storage unit 22, but also the non-volatile storage device 20 can still maintain a normal work.

The advantage provided by the present invention is that not only the storage unit can still operate stably when the external voltage is out of the operation range of the storage unit, but also the non-volatile storage device can support a variety of storage units with different specifications.

Another advantage provided by the present invention is that the second operating voltage is adjusted to meet the requirements of the operation of the storage unit by utilizing the identification code in each storage unit with different specifications.

Another advantage provided by the present invention is that the power management unit determines whether to boost, stabilize or lower the external voltage according to the control signal corresponding to the identification code in the storage unit and the detection signal corresponding to the external voltage. Actions to meet the needs of the storage unit operation.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the protection scope of the claims of the present invention.

Claims (22)

1. A non-volatile storage device, characterized in that it comprises: A power management unit, used to receive an external voltage output by an application device, and output a first operating voltage and a second operating voltage after adjusting the external voltage according to a control signal; a storage unit connected to the power management unit for receiving the second working voltage to provide storage of digital information; and A control unit, connected to the power management unit and the storage unit, is used to receive the first working voltage to start internal functions, and receives the external voltage to adjust the voltage level of an external signal transmitted between the application device , and receiving the second working voltage to adjust the voltage level of an internal signal transmitted between the storage unit; Wherein, the control unit provides the control signal according to an identification code in the storage unit, so that the second working voltage meets the requirement of the storage unit. 2. The non-volatile storage device according to claim 1, wherein the control unit comprises a system interface and a memory interface. 3. The non-volatile storage device according to claim 2, wherein the system interface is connected to the application device for receiving the external voltage as an external reference voltage, and making the voltage level of the external signal The voltage level corresponding to the external voltage. 4. The non-volatile storage device according to claim 2, wherein the memory interface is connected to the storage unit for receiving the second operating voltage as an internal reference voltage, and making the voltage level of the internal signal The voltage level of the second working voltage is quasi-compliant. 5. The non-volatile storage device according to claim 2, wherein the control unit further comprises a data processing device, and the data processing device is used to process the relationship between the storage unit and the application device according to a control program data exchange between them. 6. The non-volatile storage device according to claim 1, wherein the power management unit further comprises: A power control and switching circuit, which determines the voltage level of the second working voltage according to the control signal and a detection signal; Two voltage stabilizing circuits, one of which adjusts the external voltage to the first working voltage required for the operation of the control unit, and the other stabilizing circuit adjusts the external voltage according to the control of the power supply control and switching circuit the second operating voltage required by the storage unit; a boost circuit, according to the control of the power supply control and the switch circuit, boost the external voltage to the voltage level required by the storage unit; and A voltage detection circuit, connected to the power control and switch circuit, is used to detect the voltage level of the external voltage to generate the detection signal. 7. The non-volatile storage device according to claim 1, wherein the external voltage is a power supply voltage of the non-volatile storage device. 8. A power management unit of a non-volatile storage device with dual interface signal levels, characterized in that the power management unit includes: A power supply control and switch circuit, according to a control signal and a detection signal, to determine the voltage level of a second working voltage to meet the requirements of a storage unit in the non-volatile storage device; Two voltage stabilizing circuits, one of which adjusts a power supply voltage of the non-volatile storage device to a reference voltage level of an external signal transmitted between an application device connected to the non-volatile storage device According to the control of the power supply control and switching circuit, another voltage stabilization circuit adjusts the power supply voltage to the reference voltage level of an internal signal transmitted between a storage unit connected to the non-volatile storage device ; a boost circuit, which adjusts the power supply voltage to the reference voltage level of the internal signal according to the control of the power supply control and the switch circuit; and A voltage detection circuit, connected to the power control and switching circuit, is used to detect the voltage level of the power supply voltage to generate the detection signal. 9. A control method for adjusting voltage and signal level of a non-volatile storage device, characterized in that it comprises: adjusting an external voltage of the non-volatile storage device to generate a first working voltage to supply the non-volatile storage device to process computing data; Obtain an identification code from a storage unit of the non-volatile storage device to adjust the external voltage to generate a second operating voltage to supply the non-volatile storage device to adjust the voltage level of an internal signal and store digital the need for information; adjusting the voltage level of an external signal output by the non-volatile storage device to conform to the voltage level of the external voltage according to the external voltage; and According to the second working voltage, the voltage level of the internal signal transmitted inside the non-volatile storage device is adjusted to conform to the voltage level of the second working voltage. 10. The control method for adjusting voltage and signal level of a non-volatile storage device according to claim 9, further comprising: Obtain the identification code from the storage unit; generating a control signal according to the identification code; According to the control signal and a detection signal, the external voltage is adjusted to generate the second working voltage. 11. The control method for adjusting voltage and signal level of a non-volatile storage device according to claim 10, further comprising judging the voltage level of the external voltage according to the detection signal to determine whether Step up, step down or stabilize the voltage to provide the second working voltage. 12. The control method for adjusting voltage and signal level of a non-volatile storage device according to claim 11, wherein when the external voltage is lower than the operating range, the voltage level of the external voltage is increased, and when When the external voltage is greater than the operating range, the voltage level of the external voltage is reduced; when the external voltage is within the operating range, the voltage level of the external voltage is stabilized. 13. The control method for adjusting voltage and signal level of a non-volatile storage device according to claim 9, wherein the step of generating the second working voltage comprises: providing the minimum value of the second operating voltage supported by the non-volatile storage device to the storage unit and a control unit; obtaining the identification code in the storage unit; According to the identification code, it is judged whether the type of the storage unit is correctly identified, so as to determine whether to adjust the second operating voltage from small to large to meet the requirements of the storage unit. 14. The control method for adjusting the voltage and signal level of a non-volatile storage device according to claim 13, wherein when the type of the storage unit cannot be correctly identified, it means that the second operating voltage is not the storage unit. The voltage level of the second working voltage must be adjusted from low to high for the working voltage of the unit. When the type of the storage unit has been correctly identified, it means that the second working voltage is the working voltage of the storage unit. 15. The control method for adjusting the voltage and signal level of a non-volatile storage device according to claim 14, wherein when the second operating voltage has been adjusted to the maximum value supported by the non-volatile storage device and is still When the type of the storage unit cannot be identified, it means that the non-volatile storage device does not support the storage unit, and the adjustment of the second operating voltage is stopped. 16. The control method for adjusting the voltage and signal level of the non-volatile storage device according to claim 9, characterized in that the external signal is transmitted between a control unit and an application device of the non-volatile storage device, The internal signal is transmitted between the control unit and the storage unit, and the external signal and the internal signal are adjusted independently. 17. The control method for adjusting voltage and signal level of a non-volatile storage device according to claim 16, wherein the external signal is transmitted between a system interface of the control unit and the application device, and is controlled by The system interface is adjusted, and the internal signal is transmitted between a memory interface of the control unit and the storage unit, and is adjusted by the memory interface. 18. A control method for adjusting voltage and signal level of a non-volatile storage device, comprising: Obtain an identification code from a storage unit; generating a control signal according to the identification code; According to the control signal and a detection signal, providing a minimum value of a second operating voltage supported by the non-volatile storage device to the storage unit and a control unit; According to whether the type of the storage unit is correctly identified, the external voltage is adjusted so that the second working voltage meets the requirement of the storage unit. 19. The control method for adjusting voltage and signal level of a non-volatile storage device according to claim 18, wherein when the type of the storage unit cannot be correctly identified, it means that the second operating voltage is not the storage unit. The voltage level of the second working voltage must be adjusted from low to high for the working voltage of the unit. When the type of the storage unit has been correctly identified, it means that the second working voltage is the working voltage of the storage unit. 20. The control method for adjusting the voltage and signal level of the non-volatile storage device according to claim 19, wherein when the second operating voltage has been adjusted to the maximum value supported by the non-volatile storage device and is still When the type of the storage unit cannot be identified, it means that the non-volatile storage device does not support the storage unit, and the adjustment of the second operating voltage is stopped. 21. The control method for adjusting the voltage and signal level of the non-volatile storage device according to claim 18, further comprising: judging whether the external voltage meets an operating range of the storage unit according to the detection signal , to determine whether to boost, buck or stabilize the voltage to provide the second working voltage. 22. The control method for adjusting voltage and signal level of a non-volatile storage device according to claim 21, wherein when the external voltage is lower than the operating range, the voltage level of the external voltage is increased, and when When the external voltage is greater than the operating range, the voltage level of the external voltage is reduced; when the external voltage is within the operating range, the voltage level of the external voltage is stabilized.

Images