Flexible memory, bit-passing and mixed logic/ memory operation of two intercoupled FeFET arrays
Research output: Contribution to book/Conference proceedings/Anthology/Report › Conference contribution › Contributed › peer-review
Contributors
Abstract
Recently, memory and logic were brought into closer vicinity by introducing Logic-in-Memory circuits based on ferroelectric FETs (FeFET), where the FeFET not only stores logic values in its ferroelectric layer, but also performs logic operations of externally applied inputs with these internally stored values. As one reason for using these structures is to overcome the von-Neumann bottleneck, their logic readout gained a lot of attention, while the storage of the calculated outputs was neglected. In this paper, we propose to utilize two intercoupled memory arrays for this purpose. Between these, three operation modes are possible: pure memory operation, a passing of bits through the structure (logic mode), and conducting a logic operation in cells of the first memory array, whose result is stored in the cells of the second memory array, directly combining the logic and memory capability of these structures. For the latter, we suggest a suitable operation scheme. Electrical measurements of 28nm HKMG FeFET test structures based on hafnium oxide (HfO2) confirm the feasibility of the proposed logic/memory mixed mode.
Details
| Original language | English |
|---|---|
| Title of host publication | IEEE International Symposium on Circuits and Systems (ISCAS) |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| ISBN (print) | 978-1-7281-3320-1 |
| Publication status | Published - 2020 |
| Peer-reviewed | Yes |
Publication series
| Series | IEEE International Symposium on Circuits and Systems (ISCAS) |
|---|---|
| ISSN | 0271-4302 |
Conference
| Title | IEEE International Symposium on Circuits and Systems 2020 |
|---|---|
| Abbreviated title | ISCAS 2020 |
| Conference number | 52 |
| Duration | 10 - 21 October 2020 |
| Website | |
| Location | online |
| City | Virtual, Online |
| Country | Spain |
External IDs
| ORCID | /0000-0003-3814-0378/work/142256190 |
|---|
Keywords
ASJC Scopus subject areas
Keywords
- Ferroelectric FET (FeFET), Hafnium oxide (HfO2), Logic cascade, Logic-in-Memory (LiM), Memory array