Input/output circuit operated by variable operating voltage
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Mar 9, 2006
app pub date -
Sep 7, 2005
filing date -
Sep 8, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Disclosed herein is an input/output (I/O) circuit operated by a variable operating voltage for performing an input operation or an output operation with external chips by selecting one of two operating voltages. The I/O circuit operated by a variable operating voltage includes a middle level voltage generating unit for generating a middle level voltage between a high level operating voltage and a low level operating voltage by using a source-drain voltage of a MOS transistor; a voltage comparison unit for comparing the middle level voltage with an inputted external voltage to thereby output a comparison result; and an interface unit for performing an input operation or an output operation with the external chip by a selected operating voltage between the high level operating voltage and the low level operating voltage according to the comparison result of the voltage comparison unit.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully