Title:
半導体装置
Document Type and Number:
Japanese Patent JP5848406
Kind Code:
B2
Abstract:
An RF tag in a wireless communication system which can operate normally even when a communication distance is extremely short, for example if the RF tag is in contact with a reader/writer, whereby the reliability is improved. The RF tag (100) which communicates data by wireless communication includes a comparison circuit (12) which compares electric power (VIN) supplied from outside with reference electric power (V-BIAS) and a protection circuit portion (10) which is operated when the electric power supplied from outside is higher than the reference electric power in the comparison circuit (12).
Inventors:
Kiyoshi Kato
Asami Tadokoro
Asami Tadokoro
Application Number:
JP2014126238A
Publication Date:
January 27, 2016
Filing Date:
June 19, 2014
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
G06F1/26; G06K19/07; G06K19/077; H04B1/59; H04B5/02
Domestic Patent References:
| JP2005204493A | ||||
| JP10307898A | ||||
| JP2005202721A | ||||
| JP2003085506A | ||||
| JP9148869A | ||||
| JP10145987A |
Foreign References:
| US6069782 | ||||
| US7102862 |