Semiconductor device and method for writing data into semiconductor device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 22, 2007
Issued Date -
N/A
app pub date -
Jul 29, 2005
filing date -
Jul 30, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A semiconductor device includes an array of memory cells, a reference circuit determining a reference level by using a reference cell, and a comparator circuit comparing data of the memory cells with the reference level, and the reference circuit comprising a circuit part that is connected to the reference cell and shifts the reference level. The circuit part includes a diode connected to a source of the reference cell and a switch transistor that is connected in parallel with the diode and is turned on/off. It is therefore possible to realize multiple threshold voltages with the use of one transistor for the reference cell, by shifting the threshold voltage of the reference cell.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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