Unlock instant, AI-driven research and patent intelligence for your innovation.

Low voltage resetting circuit

A reset circuit, low-voltage technology, applied in electrical components, electronic switches, pulse technology, etc., can solve the problem of unable to re-send reset signals

Inactive Publication Date: 2008-02-13
SUNPLUS TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the aforementioned existing technologies cannot re-send the reset signal when the power supply voltage drops and returns to the normal operating voltage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low voltage resetting circuit
  • Low voltage resetting circuit
  • Low voltage resetting circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] Generally, there is a capacitor device inside the power-on-reset circuit. The operation of most power-on-reset circuits is to charge the capacitor device from the initial state of low voltage to a high voltage, but it is also possible to design the power-on reset circuit to charge the capacitor The device is discharged from the initial state of high voltage to low voltage, and the purpose of delaying the reset signal is achieved by the time required for charging / discharging of the internal capacitor device.

[0047] However, when the power supply voltage VDD is stepped down for some reason (not shutting down the power supply), the system often leads to an unexpected state due to the low voltage. When the power supply voltage VDD returns to the normal working voltage, the system will not work normally due to internal signal disorder. Therefore, after the power supply voltage VDD recovers from the inexplicable step-down to the normal working voltage, the power-on reset ci...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention relates to a low voltage reset circuit, which receives the reset signals output by a power supply turn-on reset circuit and the storage voltage of a capacitor device in said reset circuit to provide an electric path when the supply voltage reduces to below the pre-designed quasi-bit, in which, the supply turn-on reset circuit is for generating reset signals at the beginning of the turning on and the capacitor device can charge and discharge via said path to restore the original state.

Description

technical field [0001] The present invention relates to a reset signal generating circuit, and in particular to a low-voltage reset circuit. Background technique [0002] When designing an electronic circuit, a reset mechanism is often added to the circuit, so that the designed electronic circuit can be restored to an initial state when needed. Especially when the electronic circuit is powered on (starting up), each component in the circuit (such as a register) is in an uncertain state. At this time, the circuit needs to be reset to set each component in the circuit to an initial state. [0003] Therefore, a circuit must be designed to generate a reset signal at the beginning of power-on, so that the states of all electronic circuits are set to the initial state. Figure 1A is a traditional power-on reset circuit. Referring to FIG. 1A , when the power is not turned on, the charge stored in the capacitor 112 will be discharged through the resistor 111 . Therefore, when the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/22
Inventor 许博钦
Owner SUNPLUS TECH CO LTD