A 3.4-pJ FeRAM-Enabled D Flip-Flop in 0.13-µm CMOS for Nonvolatile Processing in Digital Systems
Name
MasoodQazi_Manuscript_JSSC_TK111.pdf
Description
final manuscript
Size
1.99 MB
Format
Adobe PDF
Checksum (MD5)
3e2c3f4373b5470f193513edf0f16473
Author(s)
Qazi, Masood
Amerasekera, Ajith
Chandrakasan, Anantha P.
Date Issued
October 2013
Journal
IEEE Journal of Solid-State Circuits
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Qazi, Masood, Ajith Amerasekera, and Anantha P. Chandrakasan. “A 3.4-pJ FeRAM-Enabled D Flip-Flop in 0.13-µm CMOS for Nonvolatile Processing in Digital Systems.” IEEE Journal of Solid-State Circuits 49, no. 1 (n.d.): 202–211.
Version
Original manuscript
Abstract
In order to realize a digital system with no distinction between “on” and “off,” the computational state must be stored in nonvolatile memory elements. If the energy cost and time cost of managing the computational state in nonvolatile memory can be lowered to the microsecond and picojoule-per-bit level, such a system could operate from unreliable harvested energy, never requiring a reboot. This work presents a nonvolatile D-flip-flop (NVDFF) designed in 0.13-μm CMOS that retains state in ferroelectric capacitors during sporadic power loss. The NVDFF is integrated into an ASIC design flow, and a test-case nonvolatile FIR filter with an accompanying power management unit automatically saves and restores the state based on the status of a one-bit indicator of energy availability. Correct operation has been verified over power-cycle intervals from 4.8 μs to 1 day. The round-trip save-restore energy is 3.4 pJ per NVDFF. Also presented are statistical measurements across 21 thinspace000 NVDFFs to validate the capability of the circuit to achieve the requisite 10-ppm failure rate for embedded system applications.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/jssc.2013.2282112
