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A Versatile, Voltage-Pulse Based Read and Programming Circuit for Multi-Level RRAM Cells

Title data

Pechmann, Stefan ; Mai, Timo ; Völkel, Matthias ; Mahadevaiah, Mamathamba K. ; Perez, Eduardo ; Perez-Bosch Quesada, Emilio ; Reichenbach, Marc ; Wenger, Christian ; Hagelauer, Amelie:
A Versatile, Voltage-Pulse Based Read and Programming Circuit for Multi-Level RRAM Cells.
In: Electronics. Vol. 10 (24 February 2021) Issue 5 .
ISSN 2079-9292
DOI: https://doi.org/10.3390/electronics10050530

Abstract in another language

In this work, we present an integrated read and programming circuit for Resistive Random Access Memory (RRAM) cells. Since there are a lot of different RRAM technologies in research and the process variations of this new memory technology often spread over a wide range of electrical properties, the proposed circuit focuses on versatility in order to be adaptable to different cell properties. The circuit is suitable for both read and programming operations based on voltage pulses of flexible length and height. The implemented read method is based on evaluating the voltage drop over a measurement resistor and can distinguish up to eight different states, which are coded in binary, thereby realizing a digitization of the analog memory value. The circuit was fabricated in the 130 nm CMOS process line of IHP. The simulations were done using a physics-based, multi-level RRAM model. The measurement results prove the functionality of the read circuit and the programming system and demonstrate that the read system can distinguish up to eight different states with an overall resistance ratio of 7.9.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: analog circuit; memory programming; programming circuit; read circuit; resistive memory; RRAM; voltage pulse
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Communication Electronics > Chair Communication Electronics - Univ.-Prof. Dr.-Ing. Amélie Marietta Hagelauer
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 08 Apr 2021 07:15
Last Modified: 08 Apr 2021 07:15
URI: https://eref.uni-bayreuth.de/id/eprint/64616