Power supply control circuit of NOR Flash chip

Abstract

The invention discloses a power supply control circuit of a NOR Flash chip, and relates to the field of power supply, and the power supply control circuit of the NOR Flash chip comprises a voltage input processing module which is used for converting an input 220V alternating current into a direct current and supplying the direct current to a voltage power supply module and a power failure detection control module as a working power supply; the voltage power supply module is used for converting a working power supply into a voltage-stabilized power supply to be supplied to the chip; the power failure detection control module is used for acquiring different sampling voltages based on the magnitude of the current flowing through the chip, and controlling the voltage power supply module to discharge current and cut off power when the sampling voltages are lower than a threshold value; the NOR Flash chip has the advantages that the triodes are arranged on the two sides of the chip to discharge current, when the power failure detection control module detects that the voltage of the chip drops, the two triodes are controlled to be switched on, the current at the two ends of the chip is rapidly discharged, and the time when the NOR Flash chip is in an unstable state is shortened.

Description

Technical Field

[0001] The invention relates to the field of power supply, in particular to a power supply control circuit of a NOR Flash chip. Background Art

[0002] NOR Flash chip, also known as NOR flash memory, is a non-volatile memory commonly used in embedded systems and storage devices such as smartphones, printers, digital cameras, TWS headphones, AMOLED screens, etc. In these devices, NOR Flash is used to store program code and firmware to ensure the normal operation of the device.

[0003] When the product loses power, the NOR Flash chip is in an unstable state, which poses a risk of power consumption and needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a power control circuit for a NOR Flash chip to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A power control circuit for a NOR Flash chip, comprising:

[0007] The voltage input processing module is used to convert the input 220V AC power into DC power, which is used as the working power supply for the voltage power supply module and the power failure detection control module;

[0008] Voltage power supply module, used to convert working power into regulated power supply to supply the chip;

[0009] A power-off detection control module is used to obtain different sampling voltages based on the current flowing through the chip, and when the sampling voltage is lower than a threshold, the voltage supply module is controlled to discharge current and cut off power;

[0010] The output end of the voltage input processing module is connected to the first input end of the voltage power supply module and the first input end of the power-off detection control module, the output end of the voltage power supply module is connected to the second input end of the power-off detection control module, and the output end of the power-off detection control module is connected to the second input end of the voltage power supply module.

[0011] As a further solution of the present invention: the voltage input processing module includes:

[0012] The step-down rectifier and filter unit is used to convert the input 220V AC power into DC power, and output it to the voltage power supply module and the power failure detection control module as the working power supply through the switch unit;

[0013] The switch unit is used to control whether the circuit is turned on and to manually restore the power supply of the chip after the power failure detection control module works;

[0014] The output end of the step-down rectifying and filtering unit is connected to the input end of the switch unit, and the output end of the switch unit is connected to the first input end of the voltage supply module and the first input end of the power-off detection control module.

[0015] As a further solution of the present invention: the step-down rectifier and filter unit includes a transformer, a first diode, a second diode, a third diode, a fourth diode, a first capacitor, a first inductor, and a first resistor. 220V AC is introduced into the input end of the transformer, one end of the output end of the transformer is connected to the positive electrode of the first diode and the negative electrode of the third diode, the other end of the output end of the transformer is connected to the positive electrode of the second diode and the negative electrode of the fourth diode, the positive electrode of the third diode is grounded, the positive electrode of the fourth diode is grounded, the negative electrode of the first diode is connected to the negative electrode of the second diode, one end of the first capacitor, and one end of the first inductor, the other end of the first capacitor is grounded, the other end of the first inductor is connected to one end of the first resistor and the input end of the switch unit, and the other end of the first resistor is grounded.

[0016] As a further solution of the present invention: the switching unit includes a first switch and a second resistor, one end of the first switch is connected to the output end of the step-down rectifier and filter unit, the other end of the first switch is connected to one end of the second resistor, and the other end of the second resistor is connected to the first input end of the voltage power supply module and the first input end of the power-off detection control module.

[0017] As a further solution of the present invention: the voltage supply module includes:

[0018] The chip loop unit is used to supply the output voltage after the working power is processed to the chip;

[0019] The voltage stabilization construction unit is used to detect the current flowing through the chip and obtain a feedback signal to feedback and adjust the output voltage of the chip circuit unit to build a voltage stabilization output of the output voltage of the chip circuit unit;

[0020] The first input end of the chip loop unit is connected to the output end of the voltage input processing module, the output end of the chip loop unit is connected to the input end of the voltage stabilization construction unit and the second input end of the power-off detection control module, and the output end of the voltage stabilization construction unit is connected to the second input end of the chip loop unit.

[0021] As a further solution of the present invention: the chip loop unit includes a third resistor, a first triode, a second triode, a second capacitor, a third triode, a fourth triode, a ninth resistor, and a third capacitor. One end of the third resistor is connected to the collector of the first triode, the emitter of the second triode, and the output end of the voltage input processing module. The other end of the third resistor is connected to the base of the second triode and the output end of the voltage stabilization construction unit. The collector of the second triode is connected to the base of the first triode, the emitter of the first triode is connected to one end of the second capacitor, the collector of the third triode, and one end of the chip. The other end of the second capacitor is grounded, the emitter of the third triode is grounded, and the base of the third triode is connected to the output end of the power-off detection control module. The other end of the chip is connected to one end of the ninth resistor, the input end of the voltage stabilization construction unit, and the second input end of the power-off detection control module. The other end of the ninth resistor is connected to the collector of the fourth triode and one end of the third capacitor. The other end of the third capacitor is grounded, the emitter of the fourth triode is grounded, and the base of the fourth triode is connected to the output end of the power-off detection control module.

[0022] As a further solution of the present invention: the voltage stabilization construction unit includes a fourth resistor, a fifth resistor, a first potentiometer, a fifth diode, and a fourth capacitor. One end of the fourth resistor is connected to the output end of the chip loop unit, the other end of the fourth resistor is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to one end of the first potentiometer, the other end of the first potentiometer is grounded, the sliding end of the first potentiometer is connected to the positive electrode of the fifth diode and one end of the fourth capacitor, the other end of the fourth capacitor is grounded, and the negative electrode of the fifth diode is connected to the second input end of the chip loop unit.

[0023] As a further solution of the present invention: the power failure detection control module includes:

[0024] A sampling voltage unit, used to obtain different sampling voltages based on the current flowing through the chip, and output them to the power-off control unit;

[0025] A power-off control unit, used to control the voltage supply module to discharge and power off when the sampling voltage is lower than a threshold value;

[0026] The input end of the sampling voltage unit is connected to the output end of the voltage power supply module, the output end of the sampling voltage unit is connected to the second input end of the power-off control unit, the first input end of the power-off control unit is connected to the output end of the voltage input processing module, and the output end of the power-off control unit is connected to the second input end of the voltage power supply module.

[0027] As a further solution of the present invention: the sampling voltage unit includes a sixth resistor, a seventh resistor, a second potentiometer, and a fifth capacitor, one end of the sixth resistor is connected to the output end of the voltage power supply module, the other end of the sixth resistor is connected to one end of the seventh resistor, the other end of the seventh resistor is connected to one end of the second potentiometer, the other end of the second potentiometer is grounded, the sliding end of the second potentiometer is connected to one end of the fifth capacitor and the second input end of the power-off control unit, and the other end of the fifth capacitor is grounded.

[0028] As a further solution of the present invention: the power-off control unit includes an eighth resistor, a sixth diode, a first amplifier, a tenth resistor, an eleventh resistor, and a first thyristor, one end of the eighth resistor is connected to the output end of the voltage power supply module, the other end of the eighth resistor is connected to the cathode of the sixth diode and the in-phase end of the first amplifier, the anode of the sixth diode is grounded, the inverting end of the first amplifier is connected to the output end of the sampling voltage unit, the output end of the first amplifier is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the control electrode of the first thyristor, the anode of the first thyristor is connected to one end of the eleventh resistor, the other end of the eleventh resistor is connected to the output end of the voltage input processing module, and the cathode of the first thyristor is connected to the second input end of the voltage power supply module.

[0029] Compared with the prior art, the beneficial effect of the present invention is as follows: the present invention arranges transistors on both sides of the chip for current discharge. When the power-off detection control module detects that the chip voltage drops, the two transistors are controlled to be turned on, so that the currents at both ends of the chip are quickly discharged, thereby reducing the time that the NOR Flash chip is in an unstable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a circuit diagram of a power control circuit of a NOR Flash chip. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 , a power control circuit of a NOR Flash chip, comprising:

[0033] The voltage input processing module is used to convert the input 220V AC power into DC power, which is used as the working power supply for the voltage power supply module and the power failure detection control module;

[0034] Voltage power supply module, used to convert working power into regulated power supply to supply the chip;

[0035] A power-off detection control module is used to obtain different sampling voltages based on the current flowing through the chip, and when the sampling voltage is lower than a threshold, the voltage supply module is controlled to discharge current and cut off power;

[0036] The output end of the voltage input processing module is connected to the first input end of the voltage power supply module and the first input end of the power-off detection control module, the output end of the voltage power supply module is connected to the second input end of the power-off detection control module, and the output end of the power-off detection control module is connected to the second input end of the voltage power supply module.

[0037] In this example: See Figure 1 , the voltage input processing module includes:

[0038] The step-down rectifier and filter unit is used to convert the input 220V AC power into DC power, and output it to the voltage power supply module and the power failure detection control module as the working power supply through the switch unit;

[0039] The switch unit is used to control whether the circuit is turned on and to manually restore the power supply of the chip after the power failure detection control module works;

[0040] The output end of the step-down rectifying and filtering unit is connected to the input end of the switch unit, and the output end of the switch unit is connected to the first input end of the voltage supply module and the first input end of the power-off detection control module.

[0041] In this example: See Figure 1 The step-down rectifier and filter unit includes a transformer W, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first capacitor C1, a first inductor L1, and a first resistor R1. A 220V AC is introduced into the input end of the transformer W. One end of the output end of the transformer W is connected to the positive electrode of the first diode D1 and the negative electrode of the third diode D3. The other end of the output end of the transformer W is connected to the positive electrode of the second diode D2 and the negative electrode of the fourth diode D4. The positive electrode of the third diode D3 is grounded, and the positive electrode of the fourth diode D4 is grounded. The negative electrode of the first diode D1 is connected to the negative electrode of the second diode D2, one end of the first capacitor C1, and one end of the first inductor L1. The other end of the first capacitor C1 is grounded. The other end of the first inductor L1 is connected to one end of the first resistor R1 and the input end of the switch unit, and the other end of the first resistor R1 is grounded.

[0042] After 220V AC power is input, it is stepped down by transformer W, converted to DC by a bridge rectifier circuit composed of a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4, and filtered by a filter circuit composed of a first capacitor C1, a first inductor L1, and a first resistor R1 to become a stable DC power.

[0043] In this example: See Figure 1 The switch unit includes a first switch S1 and a second resistor R2. One end of the first switch S1 is connected to the output end of the step-down rectifier and filter unit, the other end of the first switch S1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to the first input end of the voltage power supply module and the first input end of the power-off detection control module.

[0044] The first switch S1 is the main control switch. After the two transistors (V3, V4) of the voltage supply module are turned on by the power-off detection control module, the chip quickly discharges power. When the power supply returns to normal, the chip power supply is restored by opening and then closing the first switch S1.

[0045] In this example: See Figure 1 , the voltage supply module includes:

[0046] The chip loop unit is used to supply the output voltage after the working power is processed to the chip;

[0047] The voltage stabilization construction unit is used to detect the current flowing through the chip and obtain a feedback signal to feedback and adjust the output voltage of the chip circuit unit to build a voltage stabilization output of the output voltage of the chip circuit unit;

[0048] The first input end of the chip loop unit is connected to the output end of the voltage input processing module, the output end of the chip loop unit is connected to the input end of the voltage stabilization construction unit and the second input end of the power-off detection control module, and the output end of the voltage stabilization construction unit is connected to the second input end of the chip loop unit.

[0049] In this example: See Figure 1The chip loop unit includes a third resistor R3, a first triode V1, a second triode V2, a second capacitor C2, a third triode V3, a fourth triode V4, a ninth resistor R9, and a third capacitor C3. One end of the third resistor R3 is connected to the collector of the first triode V1, the emitter of the second triode V2, and the output end of the voltage input processing module. The other end of the third resistor R3 is connected to the base of the second triode V2 and the output end of the voltage stabilization construction unit. The collector of the second triode V2 is connected to the base of the first triode V1, and the emitter of the first triode V1 is connected to one end of the second capacitor C2, the output end of the third triode V4, and the output end of the voltage input processing module. The collector of the third transistor V3, one end of the chip, and the other end of the second capacitor C2 are grounded, the emitter of the third transistor V3 is grounded, the base of the third transistor V3 is connected to the output end of the power-off detection control module, the other end of the chip is connected to one end of the ninth resistor R9, the input end of the voltage stabilization construction unit, and the second input end of the power-off detection control module, the other end of the ninth resistor R9 is connected to the collector of the fourth transistor V4 and one end of the third capacitor C3, the other end of the third capacitor C3 is grounded, the emitter of the fourth transistor V4 is grounded, and the base of the fourth transistor V4 is connected to the output end of the power-off detection control module.

[0050] After the voltage is input, the circuit composed of the first transistor V1, the second transistor V2, and the third resistor R3 outputs the voltage to the chip. The second capacitor C2 and the third capacitor C3 prevent voltage mutations at the chip.

[0051] In this example: See Figure 1 The voltage stabilization construction unit includes a fourth resistor R4, a fifth resistor R5, a first potentiometer RP1, a fifth diode D5, and a fourth capacitor C4. One end of the fourth resistor R4 is connected to the output end of the chip loop unit, the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to one end of the first potentiometer RP1, the other end of the first potentiometer RP1 is grounded, the sliding end of the first potentiometer RP1 is connected to the positive electrode of the fifth diode D5 and one end of the fourth capacitor C4, the other end of the fourth capacitor C4 is grounded, and the negative electrode of the fifth diode D5 is connected to the second input end of the chip loop unit.

[0052] The current flowing through the chip is the same as the current flowing through the ninth resistor R9, so the voltage on the ninth resistor R9 can feed back the voltage on the chip, and obtain the feedback signal through the first potentiometer RP1, and feed back to the base of the second transistor V2. The greater the current flowing through the chip, the greater the voltage at the lower half of the sliding end of the first potentiometer RP1, the greater the base voltage of the second transistor V2, the smaller the collector voltage of the second transistor V2, and the smaller the emitter output voltage of the first transistor V1, so as to dynamically adjust the voltage and current output to the chip, thereby constructing a regulated output.

[0053] In this example: See Figure 1, the power-off detection control module includes:

[0054] A sampling voltage unit, used to obtain different sampling voltages based on the current flowing through the chip, and output them to the power-off control unit;

[0055] A power-off control unit, used to control the voltage supply module to discharge and power off when the sampling voltage is lower than a threshold value;

[0056] The input end of the sampling voltage unit is connected to the output end of the voltage power supply module, the output end of the sampling voltage unit is connected to the second input end of the power-off control unit, the first input end of the power-off control unit is connected to the output end of the voltage input processing module, and the output end of the power-off control unit is connected to the second input end of the voltage power supply module.

[0057] In this example: See Figure 1 The sampling voltage unit includes a sixth resistor R6, a seventh resistor R7, a second potentiometer RP2, and a fifth capacitor C5, one end of the sixth resistor R6 is connected to the output end of the voltage power supply module, the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7, the other end of the seventh resistor R7 is connected to one end of the second potentiometer RP2, the other end of the second potentiometer RP2 is grounded, the sliding end of the second potentiometer RP2 is connected to one end of the fifth capacitor C5 and the second input end of the power-off control unit, and the other end of the fifth capacitor C5 is grounded.

[0058] The voltage at the lower half of the sliding end of the second potentiometer RP2 can reflect the voltage on the ninth resistor R9, and further reflect the voltage of the chip, and feed it back to the non-inverting end of the first amplifier U1.

[0059] In this example: See Figure 1 The power-off control unit includes an eighth resistor R8, a sixth diode D6, a first amplifier U1, a tenth resistor R10, an eleventh resistor R11, and a first thyristor Z1. One end of the eighth resistor R8 is connected to the output end of the voltage power supply module, the other end of the eighth resistor R8 is connected to the cathode of the sixth diode D6 and the in-phase end of the first amplifier U1, the anode of the sixth diode D6 is grounded, the inverting end of the first amplifier U1 is connected to the output end of the sampling voltage unit, the output end of the first amplifier U1 is connected to one end of the tenth resistor R10, the other end of the tenth resistor R10 is connected to the control electrode of the first thyristor Z1, the anode of the first thyristor Z1 is connected to one end of the eleventh resistor R11, the other end of the eleventh resistor R11 is connected to the output end of the voltage input processing module, and the cathode of the first thyristor Z1 is connected to the second input end of the voltage power supply module.

[0060] When the voltage on the chip is normal, the voltage at the in-phase terminal of the first amplifier U1 is higher than the voltage at the inverting terminal, and the first amplifier U1 outputs a low level. When the chip is powered off, the voltage at the in-phase terminal of the first amplifier U1 is lower than the voltage at the inverting terminal, and the first amplifier U1 outputs a high level, triggering the first thyristor Z1, so that the common point A becomes a high level, triggering the third transistor V3 and the fourth transistor V4 to turn on, so as to quickly discharge current on both sides of the chip to avoid abnormal chip operation.

[0061] The working principle of the present invention is: the voltage input processing module is used to convert the input 220V AC power into DC power, and supply the voltage power supply module and the power-off detection control module as the working power supply; the voltage power supply module is used to convert the working power supply into a stabilized power supply to supply the chip; the power-off detection control module is used to obtain different sampling voltages based on the current flowing through the chip, and when the sampling voltage is lower than the threshold, the voltage power supply module is controlled to discharge the current and cut off the power.

[0062] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A power control circuit for a NOR Flash chip, characterized in that: The power control circuit of the NOR Flash chip includes: The voltage input processing module is used to convert the input 220V AC power into DC power, which is used as the working power supply for the voltage power supply module and the power failure detection control module; Voltage power supply module, used to convert working power into regulated power supply to supply the chip; A power-off detection control module is used to obtain different sampling voltages based on the current flowing through the chip, and when the sampling voltage is lower than a threshold, the voltage supply module is controlled to discharge current and cut off power; The output end of the voltage input processing module is connected to the first input end of the voltage power supply module and the first input end of the power-off detection control module, the output end of the voltage power supply module is connected to the second input end of the power-off detection control module, and the output end of the power-off detection control module is connected to the second input end of the voltage power supply module.

2. The power control circuit of the NOR Flash chip according to claim 1, characterized in that: The voltage input processing module includes: The step-down rectifier and filter unit is used to convert the input 220V AC power into DC power, and output it to the voltage power supply module and the power failure detection control module as the working power supply through the switch unit; The switch unit is used to control whether the circuit is turned on and to manually restore the power supply of the chip after the power failure detection control module works; The output end of the step-down rectifying and filtering unit is connected to the input end of the switch unit, and the output end of the switch unit is connected to the first input end of the voltage supply module and the first input end of the power-off detection control module.

3. The power control circuit of the NOR Flash chip according to claim 2, characterized in that: The step-down rectifier and filter unit includes a transformer, a first diode, a second diode, a third diode, a fourth diode, a first capacitor, a first inductor, and a first resistor. 220V AC is introduced into the input end of the transformer, one end of the output end of the transformer is connected to the positive electrode of the first diode and the negative electrode of the third diode, the other end of the output end of the transformer is connected to the positive electrode of the second diode and the negative electrode of the fourth diode, the positive electrode of the third diode is grounded, the positive electrode of the fourth diode is grounded, the negative electrode of the first diode is connected to the negative electrode of the second diode, one end of the first capacitor, and one end of the first inductor, the other end of the first capacitor is grounded, the other end of the first inductor is connected to one end of the first resistor and the input end of the switch unit, and the other end of the first resistor is grounded.

4. The power control circuit of the NOR Flash chip according to claim 2, characterized in that: The switch unit includes a first switch and a second resistor. One end of the first switch is connected to the output end of the step-down rectifier and filter unit, the other end of the first switch is connected to one end of the second resistor, and the other end of the second resistor is connected to the first input end of the voltage supply module and the first input end of the power-off detection control module.

5. The power control circuit of the NOR Flash chip according to claim 1, characterized in that: The voltage supply module includes: The chip loop unit is used to supply the output voltage after the working power is processed to the chip; The voltage stabilization construction unit is used to detect the current flowing through the chip and obtain a feedback signal to feedback and adjust the output voltage of the chip circuit unit to build a voltage stabilization output of the output voltage of the chip circuit unit; The first input end of the chip loop unit is connected to the output end of the voltage input processing module, the output end of the chip loop unit is connected to the input end of the voltage stabilization construction unit and the second input end of the power-off detection control module, and the output end of the voltage stabilization construction unit is connected to the second input end of the chip loop unit.

6. The power control circuit of the NOR Flash chip according to claim 5, characterized in that: The chip loop unit includes a third resistor, a first triode, a second triode, a second capacitor, a third triode, a fourth triode, a ninth resistor, and a third capacitor. One end of the third resistor is connected to the collector of the first triode, the emitter of the second triode, and the output end of the voltage input processing module. The other end of the third resistor is connected to the base of the second triode and the output end of the voltage stabilization construction unit. The collector of the second triode is connected to the base of the first triode, the emitter of the first triode is connected to one end of the second capacitor, the collector of the third triode, and one end of the chip. The other end of the second capacitor is grounded, the emitter of the third triode is grounded, and the base of the third triode is connected to the output end of the power-off detection control module. The other end of the chip is connected to one end of the ninth resistor, the input end of the voltage stabilization construction unit, and the second input end of the power-off detection control module. The other end of the ninth resistor is connected to the collector of the fourth triode and one end of the third capacitor. The other end of the third capacitor is grounded, the emitter of the fourth triode is grounded, and the base of the fourth triode is connected to the output end of the power-off detection control module.

7. The power control circuit of the NOR Flash chip according to claim 5, characterized in that: The voltage stabilization construction unit includes a fourth resistor, a fifth resistor, a first potentiometer, a fifth diode, and a fourth capacitor. One end of the fourth resistor is connected to the output end of the chip loop unit, the other end of the fourth resistor is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to one end of the first potentiometer, the other end of the first potentiometer is grounded, the sliding end of the first potentiometer is connected to the positive electrode of the fifth diode and one end of the fourth capacitor, the other end of the fourth capacitor is grounded, and the negative electrode of the fifth diode is connected to the second input end of the chip loop unit.

8. The power control circuit of the NOR Flash chip according to any one of claims 5 to 7, characterized in that: The power-off detection control module includes: A sampling voltage unit, used to obtain different sampling voltages based on the current flowing through the chip, and output them to the power-off control unit; A power-off control unit, used to control the voltage supply module to discharge and power off when the sampling voltage is lower than a threshold value; The input end of the sampling voltage unit is connected to the output end of the voltage power supply module, the output end of the sampling voltage unit is connected to the second input end of the power-off control unit, the first input end of the power-off control unit is connected to the output end of the voltage input processing module, and the output end of the power-off control unit is connected to the second input end of the voltage power supply module.

9. The power control circuit of the NOR Flash chip according to claim 8, characterized in that: The sampling voltage unit includes a sixth resistor, a seventh resistor, a second potentiometer, and a fifth capacitor. One end of the sixth resistor is connected to the output end of the voltage power supply module, the other end of the sixth resistor is connected to one end of the seventh resistor, the other end of the seventh resistor is connected to one end of the second potentiometer, the other end of the second potentiometer is grounded, the sliding end of the second potentiometer is connected to one end of the fifth capacitor and the second input end of the power-off control unit, and the other end of the fifth capacitor is grounded.

10. The power control circuit of the NOR Flash chip according to claim 8, characterized in that: The power-off control unit includes an eighth resistor, a sixth diode, a first amplifier, a tenth resistor, an eleventh resistor, and a first thyristor. One end of the eighth resistor is connected to the output end of the voltage power supply module, the other end of the eighth resistor is connected to the cathode of the sixth diode and the in-phase end of the first amplifier, the anode of the sixth diode is grounded, the inverting end of the first amplifier is connected to the output end of the sampling voltage unit, the output end of the first amplifier is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the control electrode of the first thyristor, the anode of the first thyristor is connected to one end of the eleventh resistor, the other end of the eleventh resistor is connected to the output end of the voltage input processing module, and the cathode of the first thyristor is connected to the second input end of the voltage power supply module.

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