Power-on reset circuit, chip and electronic equipment

• Main Authors: LIU SHUAIFENG, YE XUEFENG, GUO ZENGTAO
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The embodiment of the invention provides a power-on reset circuit, a chip and electronic equipment, and the power-on reset circuit comprises a power-on reset module which comprises a voltage dividing unit which is used for carrying out the voltage dividing of a power supply voltage; the comparison unit is used for comparing the voltage division output with a reference voltage to generate a power-on reset signal; the first current mirror is used for generating first current; the impedance module is used for generating control voltage based on the first current; the control module is used for generating a control signal based on the control voltage and the power supply voltage; wherein when the power supply voltage is greater than the first threshold voltage, the control signal is a first level, and the power-on reset module is closed; when the power supply voltage is smaller than the first threshold voltage, the control signal is a second level, and the power-on reset module is started; the first threshold vol