INPUT/OUTPUT CIRCUIT APPARATUS FOR MICROPROCESSOR

PURPOSE: To enable precise signal generation for optimum control by providing one or plural compactors corresponding to an analog input having a level corre sponding to a power feeding voltage, and changing a reference voltage at this comparator depending on the power feeding voltage. CONSTITUTION:...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GIYUNTAA KAIZAA, INMANUERU KURAUTAA, BUINFURIITO KURETSUTSUNAA, EDOMUNTO IEENITSUKE
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY BLASTING CALCULATING COMBUSTION ENGINES COMPUTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING CONTROLLING COMBUSTION ENGINES COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS PULSE TECHNIQUE REGULATING TESTING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: To enable precise signal generation for optimum control by providing one or plural compactors corresponding to an analog input having a level corre sponding to a power feeding voltage, and changing a reference voltage at this comparator depending on the power feeding voltage. CONSTITUTION: Reference voltage UB is reduced to reference voltage UR while using a potential divider UD (composed of two resistors R1 and R2). The reference voltage UR is impressed to the negative input side of plural comparators K, a measurement signal or a switch signal is impressed to the other input side, and these signals are also reduced to a comparatively low value similarly using the potential divider. The voltage to be mutually compared to be impressed to the input side of comparators K similarly depends on a battery voltage and therefore, generated battery voltage fluctuation is received. Thus, even when there is remarkable operating voltage fluctuation, there is no adverse effect on precisely monitoring input side analog signals.