A Soft-error-tolerant Asynchronous Microcontroller
نویسندگان
چکیده
A method is proposed for making asynchronous (QDI) circuits entirely tolerant to soft errors caused by radiation or other noise effects. The method has three components: (1) a special kind of duplication for random logic, (2) special circuitry for arbiter and synchronizer (as needed for example for external interrupts), and (3) error correction for memory arrays. An entire microcontroller has been designed with the method. Simulations at the digital level in the presence of random soft errors show that the system recovers from all soft errors. SPICE simulations also confirm the results.
منابع مشابه
Analyzing Vulnerability of Asynchronous Pipeline to Soft Errors: Leveraging Formal Verification
Glitches due to the secondary neutron particles from cosmic rays cause soft errors in integrated circuits (IC) that are becoming a major threat in modern sub 45nm ICs. Therefore, researchers have developed many techniques to mitigate the soft errors and some of them utilize the built in error detection schemes of low-power asynchronous null conventional logic (NCL). However, it requires extensi...
متن کاملOn the Stability and Robustness of Non-Synchronous Circuits with Timing Loops
Among the most pressing issues in current deep submicron VLSI circuits are large parameter variations, primarily caused by process technology imperfections, that result in excessive delay variations, and continuously increasing soft error rates. The former seriously challenges the classic synchronous design paradigm, and coping with the latter requires suitable fault-tolerant architectures. In ...
متن کاملDesign and Implementation of 8 Bit Asynchronous Microcontroller
The synchronous microcontroller is a common processor found in many embedded system. By using asynchronous design techniques, the performance of the microcontroller is increased. Through the simulation and existing synchronous design tools in the asynchronous design flow, a “clock enabling technique” is simulated and then implemented. The asynchronous architecture includes an ALU, a decoder, a ...
متن کاملSoft Error Analysis and Optimizations of C-elements in Asynchronous Circuits
Control circuit in an asynchronous design is comprised mostly of Muller C-elements. Previous work has concentrated on power, performance, and area issues of various CMOS implementations of the C-element. In this paper we carried out a thorough soft error analysis of four popular CMOS implementations of the Muller C-element. It shows that SIL implementation has the best soft error resilience. Op...
متن کاملBit Error Performance for Asynchronous Ds Cdma Systems Over Multipath Rayleigh Fading Channels (RESEARCH NOTE)
In recent years, there has been considerable interest in the use of CDMA in mobile communications. Bit error rate is one of the most important parameters in the evaluation of CDMA systems. In this paper, we develop a technique to find an accurate approximation to the probability of bit error for asynchronous direct–sequence code division multiple–access (DS/CDMA) systems by modeling the multipl...
متن کامل