Synopsys, Inc.

Synposys, Inc.

Martin Luc Cecil Arthur Niset

Andrew Edward Horch

Ting-Jia Hu

A one-time programmable memory device includes a well of a first polarity in a semiconductor substrate. A lightly-doped drain (LDD) region is above one portion of the well. The LDD region has a first doping concentration and a second polarity that is opposite the first polarity. A source region or a drain region of the second polarity is above another portion of the well. The source region or the drain region has a second doping concentration that is higher than the first doping concentration. A first breakdown voltage between the LDD region and the well region is higher than a second breakdown voltage between the source region or the drain region and the well region. A select device is positioned at least partially above a portion of the source region or the drain region. The select device is configured to form a channel between the source region or the drain region and the LDD region. An anti-fuse device is positioned at least partially above a portion of the LDD region.

One-time programmable bitcell with native anti-fuse

A nonvolatile memory ('NVM') bitcell includes a source and a drain formed in an active region of a substrate and separated by a channel region in the active region. A gate stack formed over the substrate includes a gate formed on an oxide and at least one sidewall spacer formed around the gate. A charge trapping layer is formed on an opposite side of the sidewall spacer from the gate, where at least a portion of the charge trapping layer acts as a floating gate for the bitcell. The bitcell further includes a salicide block covering the floating gate portion of the charge trapping layer. An contact (sometimes referred to as a bar contact) physically contacts the salicide block above the floating gate portion of the charge trapping layer.

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Seattle, WA, United States of America

Martin Luc Cecil Arthur Niset