Power-on reset circuit and method, storage medium and electronic equipment
A technology of electric reset and circuit, which is applied in the direction of electronic switches, electrical components, pulse technology, etc., and can solve problems such as failure to achieve a reset effect, failure to enter a workable state, and failure of a reset signal
Pending Publication Date: 2022-07-26
SHANGHAI AWINIC TECH CO LTD
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Problems solved by technology
[0003] However, in the existing power-on reset circuit, when the circuit system is powered on slowly, when the power-on voltage reaches the conduction voltage of the inverter (about 0.7V), a reset signal is sent out. At this time, the subsequent stage The voltage of the circuit has not reached the voltage value that can enter the work, it has not entered the workable state, the reset signal is invalid, and the reset effect is not achieved
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[0063] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0064] see figure 1 In the existing power-on reset circuit, the first end of the first resistor R1 is connected to the power supply voltage VDD through a first P-channel field effect transistor (Positive channel Metal Oxide Semiconductor, PMOS) MP1, and the second end of R1 is connected to the second The first end of the resistor R2 is connected to the gate of the first N-type metal-oxide-semiconductor (Negative channel-Metal-Oxide-S...
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The invention provides a power-on reset circuit and method, a storage medium and electronic equipment, and the circuit comprises a first control unit which is used for outputting a first control voltage signal of which the ratio of a voltage value to a power-on voltage signal is K1 when the power-on voltage signal is greater than or equal to a first voltage threshold value; k1 is a positive number less than 1; the reset unit is used for outputting an inverted reset signal in a low level state and a reset signal in a high level state when the first control voltage signal is greater than a second voltage threshold value; when the first control voltage signal is smaller than or equal to a second voltage threshold value, an anti-phase reset signal in a high-level state and a reset signal in a low-level state are output; when the voltage value of the first control voltage signal is the second voltage threshold value, the voltage value of the power-on voltage signal is greater than or equal to the working voltage threshold value, so that a high-level reset signal is sent out after the power-on voltage signal is greater than or equal to the working voltage threshold value through adjusting the value of K1.
Description
technical field [0001] The present application relates to the technical field of electronic circuits, and in particular, to a power-on reset circuit, method, storage medium, and electronic device. Background technique [0002] In the prior art, when the circuit system is powered on, the power-on reset circuit in the circuit system will send a reset signal to initialize the post-stage circuit, and after the reset signal is sent, the post-stage circuit can start to work. [0003] However, in the existing power-on reset circuit, when the circuit system is powered on slowly, when the power-on voltage reaches the turn-on voltage of the inverter (about 0.7V), a reset signal is sent. The voltage of the circuit has not reached the voltage value that can be entered into work, and has not entered the working state, the reset signal is invalid, and the reset effect is not achieved. SUMMARY OF THE INVENTION [0004] Based on the above disadvantages of the prior art, the present appli...
Claims
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IPC IPC(8): H03K17/22
CPCH03K17/223
Inventor 孟威威吴传奎宋志军
Owner SHANGHAI AWINIC TECH CO LTD