Proceedings ArticleDOI
A 3us wake-up time nonvolatile processor based on ferroelectric flip-flops
Yiqun Wang,Yongpan Liu,Shuangchen Li,Daming Zhang,Bo Zhao,Mei-Fang Chiang,Yanxin Yan,Baiko Sai,Huazhong Yang +8 more
- pp 149-152
TLDR
A fabricated nonvolatile processor based on ferroelectric flip-flops can operate continuously even under power failures occurring at 20 KHz and will provide a new level of support to chip-level fine-grained power management and energy harvesting applications.Abstract:
Nonvolatile processors offer a number of desirable properties including instant on/off, zero standby power and resilience to power failures. This paper presents a fabricated nonvolatile processor based on ferroelectric flip-flops. These flipflops are used in a distributed fashion and are able to maintain system states without any power supply indefinitely. An efficient controller is employed to achieve parallel reads and writes to the flip-flops. A reconfigurable voltage detection system is designed for automatic system backup during power failures. Measurement results show that this nonvolatile processor can operate continuously even under power failures occurring at 20 KHz. It can backup system states within 7μs and restore them within 3 μs. Such capabilities will provide a new level of support to chip-level fine-grained power management and energy harvesting applications.read more
Citations
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Journal ArticleDOI
Design Considerations for Energy-Efficient and Variation-Tolerant Nonvolatile Logic
TL;DR: A detailed analysis of the design tradeoffs in the driver circuitry for performing backup and restore, and a novel method to design the energy optimal driver for a given yield is presented, resulting in minimizing the energy wastage and satisfying the yield constraint.
Journal ArticleDOI
Circuit Models for Ferroelectrics—Part II: Analysis of FE-Nonvolatile Latches
Kshitij Auluck,Edwin C. Kan +1 more
TL;DR: A detailed analysis of hybrid ferroelectric (FE)-CMOS nonvolatile latches, based on simulations with the unified physical circuit model from Part-I and experimental verification with circuit measurements, is presented in this paper.
Proceedings ArticleDOI
A Dual-Threshold Scheme Along with Security Reinforcement for Energy Efficient Nonvolatile Processors
TL;DR: A dual-threshold method to maximize execution progress is proposed by enabling a system to hibernate to wait for power resumption instead of backing up data directly upon power interruptions to improve the performance of NVPs.
Journal ArticleDOI
A lightweight progress maximization scheduler for non-volatile processor under unstable energy harvesting
TL;DR: In this paper, the authors consider the problem of energy harvesting in embedded systems and show that the harvested energy is intrinsically unstable and thus the program execution may be interrup-ed.
Patent
Four capacitor nonvolatile bit cell
Steven Bartling,Sudhanshu Khanna +1 more
TL;DR: In this paper, two ferroelectric capacitors are connected in series between a first plate line and a second plate line, and a clamping circuit is coupled to the node and is operable to clamp the node to a voltage approximately equal to first voltage while the bit cell is not being accessed.
References
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Proceedings ArticleDOI
A compression-based area-efficient recovery architecture for nonvolatile processors
Yiqun Wang,Yongpan Liu,Yumeng Liu,Daming Zhang,Shuangchen Li,Baiko Sai,Mei-Fang Chiang,Huazhong Yang +7 more
TL;DR: A compare and compress recovery architecture, consisting of a parallel run-length codec (PRLC) and a state table logic, to reduce the area of nonvolatile registers and a heuristic vector selecting algorithm, which can provide over 42% better register number reduction than other vector selecting approaches.
Proceedings ArticleDOI
A non-volatile microcontroller with integrated floating-gate transistors
TL;DR: Experiments indicate that the proposed architecture has minimal impact on normal operation while enabling all processor state to be preserved across an unexpected power interruption, and careful system-level optimizations to hide expensive non-volatile operations are evaluated.
Proceedings ArticleDOI
A compare-and-write ferroelectric nonvolatile flip-flop for energy-harvesting applications
TL;DR: A novel compare-and-write ferroelectric nonvolatile flip-flop is developed, which can be used in the checkpoint processor for energy-harvesting applications and can make the processornonvolatile, secure and instant recoverable from power failures.