摘要:
An input/output (IO) circuit powered by an input/output (IO) supply voltage. The IO circuit includes a supply detector cell that detects a core supply voltage and generates a supply detect signal. A driver circuit is connected to a PAD and the driver circuit receives the supply detect signal. A failsafe circuit receives a PAD voltage. The failsafe circuit and the supply detector cell controls a leakage current from the PAD based on the IO supply voltage and the PAD voltage.
摘要:
The invention relates to a safety switching device (10) for deactivating a technical system (12) in a failsafe manner, comprising a first and at least one second input (30, 30'). The first input (30) receives a first input signal (38) by means of a first input circuit (32), and the second input (30') receives a second input signal (38') by means of a second input circuit. The first and second input circuit are divided into a first (I) and a second circuit (II) which are galvanically separated from each other. A first signal input circuit (40), a first threshold element (44), and a first coupling element (42) of the first input circuit (32) as well as a second signal input circuit (40'), a second threshold element (44'), and a second coupling element (42') of the second input circuit are arranged in the first circuit (I). The first circuit (I) further has a first testing device (46) with a third coupling element (48), the first testing device (46) being designed to interrupt a current path from the first and second threshold element (44, 44') to a ground terminal (64). A second testing device (52) and a first discharge circuit (54) of the first input (30) and a third testing device (52') and a second discharge circuit (54') of the second input are arranged in the second circuit (II), said first, second, and third coupling element (42, 42', 48) connecting the first and second circuit (I, II) to each other. (Fig. 1)
摘要:
The exemplary embodiments provide a resilient integrated circuit. An exemplary IC comprises a plurality of composite circuit elements, a state machine element (SME), and a plurality of communication elements. Each composite circuit element comprises an element controller, an element interface and a selected circuit element which may vary by element type, and which may be configurable. The state machine element assigns various functions based on element type, such as assigning a first configuration to a first element type, assigning a second configuration to a second element type, and providing a first data link for the corresponding assignments. The element controller controls the execution of data operations by the circuit element. Function assignment, routing, fault detection, and re-assignment and data re-routing can occur in real time for a wide variety of programs and algorithms, providing for the IC to continue the same functioning despite defects which may arise during operation.
摘要:
The exemplary embodiments provide a resilient integrated circuit. An exemplary IC comprises a plurality of composite circuit elements, a state machine element (SME), and a plurality of communication elements. Each composite circuit element comprises an element controller, an element interface and a selected circuit element which may vary by element type, and which may be configurable. The state machine element assigns various functions based on element type, such as assigning a first configuration to a first element type, assigning a second configuration to a second element type, and providing a first data link for the corresponding assignments. The element controller controls the execution of data operations by the circuit element. Function assignment, routing, fault detection, and re-assignment and data re-routing can occur in real time for a wide variety of programs and algorithms, providing for the IC to continue the same functioning despite defects which may arise during operation.
摘要:
New and improved methods and circuit designs for asynchronous circuits that are tolerant to transient faults, for example of the type introduced through radiation or, more broadly, single - event effects SEE-tolerant configurations (210, 210', 301,404, 510, 520, 800) are shown and described for combinational logic circuits and state-holding logic circuits The invention further provides SEE-tolerant configurations for SRAM memory circuits (700, 800)
摘要:
A fail-safe logical operation circuit which includes a transformer (T) for converting binary input signals to magnetic flux to sum them up, and a level detector (1) for detecting this sum and generating binary outputs having logical values of "1" and "0". In this way, the fail-safe circuit can simplify the circuit construction and can reduce the level of the logical output.
摘要:
A fail-safe logic circuit required to assure security in a system requiring high safety such as an automatic railway control system is constructed by a conventional digital IC. A plurality of flip-flops (1a, 1b) are connected in series, an output of a final stage flip-flop (1b) is inverted and connected to an input of a first stage flip-flop (1a), and pulse signals (Xa, Xb) representing logical inputs are applied to clock terminals (T) of the respective flip-flops so that an output representing a combination of the input states is produced at the output of the final stage flip-flop (1b). The fail-safe logic circuit is constructed by the flip-flops which are in the form of simple digital IC and input pulse signals. Thus, the fail-safe function is attained with the simple circuit and the safety feature of the system is enhanced.
摘要:
57 Selon l'invention, le circuit logique engendrant un courant continu d'intensité maximale déterminée sur sa borne de sortie (E) lorsqu'un signal alternatif d'amplitude quelconque est appliqué à sa borne d'entrée (El) comprend un convertisseur (12,13), non référencé en tension continue par rapport à la masse, un condensateur (11) connecté entre la borne de sortie positive et la borne de sortie négative dudit convertisseur, un générateur de courant constant (23,24) connecté entre ladite borne de sortie positive et la masse, ladite borne de sortie négative constituant la borne de sortie dudit circuit logique.
摘要:
Die Anmeldung bezieht sich auf eine Schaltungsanordnung zur logischen Verknüpfung wechselspannungsförmiger Eingangssignale zu einem wechselspannungsförmigen Ausgangssignal durch Gleichrichtung der Eingangssignale zu einem Gleichstromsignal, das eine Schwingungsschaltung mit Verstärker steuert. Die Erfindung besteht darin, daß an den Eingängen zur galvanischen Trennung Kondensatoren (5, 6) mit 4 diagonal genenüberliegenden Anschlüssen vorgesehen sind, wobei an einem Belag die Eingänge (E1, E2) und an einem zweiten Belag Gleichrichterschaltungen aus entgegengesetzt gepolten Dioden (7, 8, 9, 10) angeschlossen sind, die mit Glättungsschaltungen aus Kondensatoren (11, 12) mit 4 diagonal gegenüberliegenden Anschlüssen und Zener-Dioden (15, 16) zur Stabilisierung verbunden sind, die an eine Oszillatorschaltung (17) vor dem Ausgang angeschlossen sind. Jeweils ein Eingang ist an einer anderen logischen Verknüpfungsschaltung seriell geschleift. Die Dotierung wird so gewählt, daß die zur Erzeugung der Eingangswechselspannungssignale verwendete Batteriespannung jeweils die entgegengesetzte Polung zu den von der Oszillatorschaltung benötigten und in Abhängigkeit von den Wechselspannungssignalen durch die Eingangskondensatoren und Gleichrichterschaltungen erzeugten Betriebsspannungen aufweist.