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Integrated Circuit Systems and Integrated Circuits

A technology of integrated circuits and control circuits, which is applied in the field of integrated circuit systems and integrated circuits, and can solve problems such as power consumption reduction

Active Publication Date: 2020-04-07
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Despite the improved power generation efficiency, the power consumption of MCUs used in embedded devices needs to be as low as possible to allow embedded devices to operate using the limited power available from energy harvesters

Method used

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  • Integrated Circuit Systems and Integrated Circuits
  • Integrated Circuit Systems and Integrated Circuits
  • Integrated Circuit Systems and Integrated Circuits

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0036] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0037] figure 1 is a diagram showing an example of the configuration of an integrated circuit system having the first integrated circuit IC1 and the second integrated circuit IC2. exist figure 1Among them, the first integrated circuit IC1 which is a low-power integrated circuit such as the previously described low-power MCU has the following I / O ports whose signal input and output modes in sleep mode are settable. The first integrated circuit IC1 includes a plurality of first I / O ports 101 , 102 , 111 and 112 . The first integrated circuit IC1 operates in at least any one of an active mode and a sleep mode, wherein the power consumption of the sleep mode is lower than that of the active mode. The signal input and output modes set for the first I / O port during the active mode remain unchanged in the sleep mode.

[0038] The second integrated circuit IC2 ...

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Abstract

The invention discloses an integrated circuit system and an integrated circuit. The integrated circuit system includes: a first integrated circuit for which a signal pattern set for a plurality of first I / O ports in an active mode remains unchanged in a sleep mode; and a second integrated circuit, For the second integrated circuit, the plurality of second I / O ports are placed in a floating state in the sleep mode, wherein the first integrated circuit sends a first notification signal indicating an operation mode to the second integrated circuit, The second integrated circuit transmits a second notification signal indicating an operation mode to the first integrated circuit, and wherein the signal modes of the plurality of first I / O ports and the signals of the plurality of second I / O ports The mode is set to suppress constant current flowing continuously between the first I / O port and the second I / O port and to suppress shoot-through current flowing.

Description

technical field [0001] The disclosure herein relates generally to integrated circuit systems and integrated circuits. Background technique [0002] In recent years, power generation efficiency has been improved for energy harvesting devices that generate electricity from ambient energy, such as solar cells, thermoelectric generators, or vibration generators. An MCU (Micro Control Unit) capable of operating with tiny electric power has also been developed. MCUs and energy harvesters can be combined to implement embedded devices capable of operating without receiving power from external sources. One of the applications of such embedded devices may be wireless sensor nodes. The realization of wireless sensor nodes capable of operating without receiving power allows wireless sensor nodes to be installed in unsafe high places, places where toxic gases are present, where temperature and humidity are intolerable to humans, etc., without the need for manual battery replacement, S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/20G06F1/3234H04W4/70
CPCG06F1/3253G06F13/20G06F2213/0016H04W4/70H04W52/0274H04W56/001Y02D30/70
Inventor 川上健太郎
Owner FUJITSU LTD