Anders T Dejenfelt

Title: Innovations of Anders T Dejenfelt

Introduction

Anders T Dejenfelt is a prominent inventor based in Palo Alto, CA (US). He has made significant contributions to the field of nonvolatile memory technology, holding a total of 9 patents. His work focuses on enhancing the efficiency and performance of EEPROM cells, which are crucial for various electronic applications.

Latest Patents

One of his latest patents is titled "Shrinkable and highly coupled double poly EEPROM with inverter." This invention describes a nonvolatile EEPROM cell that utilizes a double poly arrangement to provide stored data without the need for sense amplifiers, thereby reducing power requirements. The design features a floating gate in a first poly layer and a control gate overlapping the floating gate in a second poly layer. This innovative configuration allows for an area-efficient layout that is easily shrinkable compared to prior art memory cells. Additionally, the stacking of the control and floating gates results in higher capacitive coupling. The EEPROM cell also includes an access gate, a tunnel capacitor, and at least one inverter. In some embodiments, this EEPROM cell can be used to configure programmable logic without the need for a conloading step.

Another significant patent is the "EEPROM memory cell array architecture for substantially eliminating leakage current." This architecture allows for reading memory cells in a memory cell array, such as a CPLD, at lower voltages than previous designs, facilitating the development of low voltage applications. This is achieved by associating each wordline of the memory cell array with a ground transistor. In one embodiment, the ground transistor can be a high voltage transistor, allowing the same high voltage control signal to manage both the ground transistor and the memory cell's read transistor. In another embodiment, the ground transistor is a low voltage transistor controlled by a separate low voltage control signal.

Career Highlights

Anders T Dejenfelt is currently employed at Xilinx, Inc., where he continues to innovate in the field of memory technology. His work has been instrumental in advancing the capabilities of programmable logic devices.

Collaborations

He has collaborated with notable colleagues, including Qi Lin and Robert A Olah, contributing to various projects and innovations within the company.

Conclusion

Anders T Dejenfelt's contributions to EEPROM technology have significantly impacted the field of electronics. His innovative patents reflect his commitment to enhancing memory efficiency and performance.