Safe switching apparatus and switching method for system on chip
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A system-on-chip and safety switch technology, applied in electronic switches, electrical components, pulse technology, etc., can solve problems such as inconvenient interface, accidental shutdown, and damage to the hard disk file system, so as to simplify the circuit design structure, avoid accidental startup problems, The effect of solving application bottlenecks
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A system-on-chip and safety switch technology, applied in electronic switches, electrical components, pulse technology, etc., can solve problems such as inconvenient interface, accidental shutdown, and damage to the hard disk file system, so as to simplify the circuit design structure, avoid accidental startup problems, The effect of solving application bottlenecks
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[0034] The present invention will be described in further detail below through specific embodiments and accompanying drawings.
[0035] figure 2 It is a structural schematic diagram of the safety switching device of the present invention. see figure 2 , the safety switching device mainly includes: a monostable trigger unit 201, a flip trigger 202, an isolation and reverse unit 203, and a control unit 204 arranged in the system on chip, of course, also includes a standby power supply 205 for the The power supply of the safety switch machine device. Since the standby power supply is not the main component of the present invention, the monostable trigger unit 201 , flip-flop 202 , isolation and inversion unit 203 , and control unit 204 are mainly described in this specification.
[0036] image 3 It is a circuit diagram of a specific embodiment of the safety switching device of the present invention. see below figure 2 with image 3 Come to describe the present inventio...
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Abstract
The invention discloses a system-on-a-chip safe power-on and power-off device which comprises a monostable trigger unit, a T-flip-flop, an isolation reverse unit, a control unit and a standby power; wherein, the monostable trigger unit is provided with buttons and two output terminals, the first output terminal is connected with an interrupt input terminal of the system-on-a-chip, the second output terminal is connected with a clock terminal of the T-flip-flop; a setting signal terminal and a resetting signal terminal of the T-flip-flop are respectively connected with two common output terminals of the system-on-a-chip, and the output terminals are connected with a control terminal of the power of the system-on-a-chip ; the control unit is arranged in the system-on-a-chip. The invention also discloses a safe power-on and power-off method of the system-on-a-chip. The invention can set the setting signal and the resetting signal of the T-flip-flop by the movements of the buttons to control the power-on and the power-off of the power of the system-on-a-chip. By utilizing the invention, the safe power-on and power-off on the system-on-a-chip can be realized with relatively low cost.
Description
technical field [0001] The invention relates to a power supply control technology of electronic equipment, in particular to a system on chip (SOC, System on Chip) safety switching device and a safety switching method. Background technique [0002] With the rapid development of embedded system technology, SoC technology has also been applied to various fields. The so-called system-on-chip is a chip customized according to the requirements of different customers. It integrates the key components of the system into a chip to complete specific application functions. [0003] At present, many embedded system-on-chip (SOC) chips do not have a safety switch control device inside. At present, the commonly used switch technology on embedded SOC is: use an on / off button on the outside of the chip to control the flip trigger to directly open or turn off the power. The disadvantage of this switch-on technology is that even if the system is running the program, as long as the shutdown ...
Claims
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