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A single pulse generation circuit and a bidirectional level conversion circuit

A technology for generating circuits and single pulses, which is applied in the direction of logic circuits, pulse technology, logic circuit connection/interface layout, etc., can solve the problems of destroying the impedance matching of output ports and large power consumption, so as to speed up signal transmission speed and reduce power consumption. Loss, ensure the effect of impedance matching and signal integrity

Pending Publication Date: 2019-05-21
SHANGHAI AWINIC TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a single pulse generating circuit and a bidirectional level conversion circuit to solve the problems of high power consumption of the existing pull-up control module, which will destroy the impedance matching and signal integrity of the output port

Method used

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  • A single pulse generation circuit and a bidirectional level conversion circuit
  • A single pulse generation circuit and a bidirectional level conversion circuit
  • A single pulse generation circuit and a bidirectional level conversion circuit

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Embodiment Construction

[0044] As mentioned in the background, in the existing level shifting chip, the pull-up control module will cause a large power consumption of the chip. Such as figure 1 as shown, figure 1 It is a structural schematic diagram of an existing level conversion chip. When the first terminal A of the signal transmission terminal MN is turned from a low level to a high level, the second control module controls the second pull-up transistor MP2 to turn on, and the signal The second terminal B of the transmission terminal MN is pulled from a low level to a high level; when the second terminal B of the signal transmission terminal MN is turned from a low level to a high level, the first control module controls the first pull-up transistor MP1 to conduct is turned on, the first terminal A of the signal transmission terminal MN is pulled from low level to high level.

[0045] Such as figure 2 as shown, figure 2 It is a structural schematic diagram of an existing control module. Whe...

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Abstract

The invention provides a single pulse generation circuit and a bidirectional level conversion circuit. The single pulse generation circuit comprises a first signal input end, a second signal input end, a port detection module and a single pulse generation module, The port detection module is used for outputting a high level when at least one of the first signal input end and the second signal input end is at a low level, and outputting a low level when both the first signal input end and the second signal input end are at a high level, so that the output of the single pulse generation module is accelerated to turn to a high level; The single pulse generation module is used for generating a single pulse when any one of the first signal input end and the second signal input end is overturnedfrom a low level to a high level; When the first signal input end and the second signal input end are both turned over to high levels, transmission power consumption is reduced, and impedance matching performance and signal integrity of the output port are guaranteed at the same time.

Description

technical field [0001] The invention relates to the technical field of semiconductor integrated circuits, and more specifically, to a single pulse generation circuit and a bidirectional level conversion circuit. Background technique [0002] Level conversion chips are one of the common chip types in integrated circuits, and are widely used in systems such as data transmission, logic control, and digital-to-analog conversion. The function of the level conversion chip is to transmit the logic level signal in the lower voltage domain of one end to the higher voltage domain of the other end, or to transmit the logic level signal in the higher voltage domain of one end to the higher voltage domain of the other end. In the low voltage domain, the transmission delay is minimized during the transmission process, while maintaining the integrity of the signal. [0003] In order to reduce the delay of level conversion, it is usually necessary to add a fast pull-up transistor at the ou...

Claims

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Application Information

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IPC IPC(8): H03K19/0185H03K19/00
Inventor 董渊王云松黄建刚程剑涛孙洪军
Owner SHANGHAI AWINIC TECH CO LTD
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