This report presents the results of Single Event Effect (SEE) characterization testing of the Intel 87C51FC microcontroller for use in Space Station Freedom (SSF). The 87C51FC exhibited 4 types of SEE: RAM upset and three types of system errors, i.e., reset, latchup, and power cycle (a condition not correctable by the onboard watchdog timer). The microcontroller cross sections and response rate...

This paper describes a framework for test-case generation for microcontroller binary programs using abstract interpretation techniques. The key idea of our approach is to derive program invariants a priori, and then use backward analysis to obtain test vectors that are executed on the target microcontroller. Due to the structure of binary code, the abstract interpretation framework is based on ...

In the past, adding speech recording and playback capability to a product meant using a digital signal processor or a specialized audio chip. Now, using a simplified Adaptive Differential Pulse Code Modulation (ADPCM) algorithm, these audio capabilities can be added to any PIC® microcontroller or DSC digital signal controller. This application note will cover the ADPCM compression and decompres...

In this paper, we present a low power high temperature 80C51 microcontroller. The low power optimizations are applied at gate and architectural level, by using extensive clock and data gating, and by completely redesigning the micro-architecture. We also present original clock gating techniques: pre-computed clock gating. To validate these techniques, extensive comparisons with other realizatio...

In this paper, we describe a recently developed DC motor position control experimental setup that can be accessed via the Internet. The experiment consists of two primary elements communicating with each other: i) a server consisting of a low-cost microcontroller, Parallax’s 40-pin Basic Stamp 2 (BS2P40), interfaced with an embedded ethernet IC, Cirrus Logic’s Crystal CS8900A, and ii) a client ...

The concept of the fuzzy logic makes feasible the creation of fuzzy controllers with low cost 16 bit microcontroller having the same performance as of controllers realized with more expensive Digital Signal Processor (DSP). In this article the implementation of such a fuzzy controller is proposed for 16 bit microcontroller with fast fuzzyficationinference-defuzzyfication algorithm. Because the ...

Received Nov 1, 2011 Revised Jan 18, 2012 Accepted Jan 28, 2012 In this paper, we have proposed a technique by which customized sound can be generated using 8 bit AVR microcontroller. Any sound file chosen from computer can be integrated in microcontroller programming which is written in C and compiled by AVR libc compiler. An 8 bit DAC connected to PORT A of AVR microcontroller takes data of s...

Embedded systems are often used in security-critical scenarios where physical access of an adversary cannot be prevented. An attacker with unrestricted physical access to an embedded device could thus use observation-based attacks like power analysis or chip probing techniques to extract chip-internal secrets. In this work, we investigate how to counteract first-order passive physical attacks o...

Avoider robot is mean robot who is designed to avoid the block in around. Except that, this robot is also added by an addition aplication to dim the fire. This robot is made with ultrasonic sensor PING. This sensor is set on the front, right and left from robot. This sensor is used robot to look for the right street, so that robot can walk on. After the robot can look for the right street, next...

Microcontroller-based systems require the design of a hardware/software interface that enables software running on the microcontroller to control external devices. This interface consists of the sequential logic that physically connects the devices to the microcontroller and the software drivers that allow code to access the device functions. This paper presents a method for automatically synth...