This brief exploits the fusion of low-power logic and nonvolatile memory inside the emerging ferroelectric FETs (FeFETs) and proposes a new nonvolatile D flip-flop (nvDFF) through the device-circuit co-design. Compared with existing FeFET-based nvDFFs with on-demand control of backup and restore (BR), the area overhead is lowered by half, and the routing cost is reduced with embedded backup control into the supply voltage. Circuit simulations show below 5% energy-delay overhead in the normal mode and femtojoule BR energy. This new nvDFF promises area-and energy-efficient nonvolatile computing for power-gating and energy-harvesting applications.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering