Hardened flip-flops and latches are designed to be resilient to soft errors, maintaining high system reliability in the presence of energetic radiation. The wealth of different hardened designs (with varying protection levels) and the probabilistic nature of reliability complicates the choice of which hardened storage element to substitute where. This paper develops an analytical model for hard...

i ABSTRACT Radiation hardening by design (RHBD) has become a necessary practice when creating circuits to operate within radiated environments. While employing RHBD techniques has tradeoffs between size, speed and power, novel designs help to minimize these penalties. Space radiation is the primary source of radiation errors in circuits and two types of single event effects, single event upsets...

Low scaling technology makes a significant reduction in dimension and supply voltage, and lead to new challenges about power consumption such as increasing nodes sensitivity over radiation-induced soft errors in VLSI circuits. In this area, different design methods have been proposed to low power flip-flops and various research studies have been done to reach a suitable hardened flip-flops. In ...

To meet the requirements of both cost-effectiveness and high reliability for low-orbit aerospace applications, this paper first presents a radiation hardened latch design, namely HLCRT. The mainly consists single-node-upset self-recoverable cell, 3-input C-element, an inverter. If any two inputs C-element suffer from double-node-upset (DNU), or if one node inside cell together with another outs...

In this paper, based on the coupled-mode and carrier rate equations, a dynamic model and numerical analysis of a multi quantum well (MQW) chirped distributed feedback semiconductor optical amplifier (DFB-SOA)  all-optical flip-flop is precisely derived. We have analyzed the effects of strains of QW and MQW and cross phase modulation (XPM) on the dynamic response, and rise and fall times of the ...

The proposed two types of multi-valued D flip-flops are NMAX-TG D flip-flop and NMIN-TG D flip-flop A NMAX-TG D flip-flop and a NMIN D flip-flop are composed of the components such as NMAX D flip-flops, NMIN D flip-flops and T-gate circuits. In the simulations, sampling frequencies of NMAX-TG D flip-flop and NMIN-TG D flip-flop are measured around 500 kHz and 1 MHz, respectively. The PDP parame...

We show measurement results of variation-tolerance of an error-hardened dual-modular-redundancy flip-flop fabricated in a 65-nm process. The proposed error-hardened FF called BCDMR is very strong against soft errors and also robust to process variations. We propose a shift-register-based test structure to measure variations. The proposed test structure has features of constant pin count and fas...

This study presents the importance of reversible logic in designing of high performance and low power consumption digital circuits. In our research, the various forms of sequential reversible circuits such as D, T, SR and JK flip-flops are investigated based on carbon nanotube field-effect transistors. All reversible flip-flops are simulated in two voltages, 0.3 and 0.5 Volt. Our results show t...

Timing Optimization is one of the most important objectives of the designer in the Modern VLSI world. Memory elements play a vital role in Digital World. The basic memory elements of designer considerations are Latch and flip flop. In this paper, we analyze the design of Single-bit Flip flop (SBFF) and made performance comparison over the Multi-bit Flip-flop (MBFF). For improving Flip flop perf...

in this paper, based on the coupled-mode and carrier rate equations, a dynamic model and numerical analysis of a multi quantum well (mqw) chirped distributed feedback semiconductor optical amplifier (dfb-soa)  all-optical flip-flop is precisely derived. we have analyzed the effects of strains of qw and mqw and cross phase modulation (xpm) on the dynamic response, and rise and fall times of the ...