Matches 501 - 550 out of 745 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
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5682111 Integrated circuit with power monitor  
Power monitoring circuit 5000 monitors a positive power supply Vcc and a negative power supply Vee. If either one or both power supplies fall below predetermined respective threshold values, a...
5677643 Potential detecting circuit which suppresses the adverse effects and eliminates dependency of detected potential on power supply potential  
A potential detecting circuit comprises a MOSFET, a constant current circuit, a reference potential generating circuit and a comparing circuit. A power supply potential is applied to a drain of the...
5675276 Gate driver circuit and hysteresis circuit therefor  
A hysteresis circuit including first and second voltage reference circuits responsive to an input control signal for providing first and second voltage levels connected in series to produce a...
5672989 Nonvolatile semiconductor integrated circuit having an address transition detector  
A semiconductor integrated circuit having an address transition detector includes a power detecting circuit connected to a source terminal for detecting a voltage level of the source terminal, a...
5666313 Semiconductor memory device with complete inhibition of boosting of word line drive signal and method thereof  
A word line drive signal generating circuit, which generates a word line drive signal RX to a selected word line, includes an RX generating circuit responsive to an external row address strobe...
5663713 Control system  
A control system comprises a controller for controlling an actuator, for instance of an electrically power assisted vehicle steering system. An unstable circuit, such as first and second cascade...
5654656 Power up reset circuit with threshold voltage shift protection  
The reset circuit includes a first current mirror coupled to a first terminal of a power supply. A second current mirror is coupled to a second terminal of the power supply. First and second...
5646572 Power management system for integrated circuits  
A system for controlling the application of power by a power supply to a load. The inventive system includes a first circuit for drawing power from the power supply and a second circuit for...
5644259 Reset circuit and integrated circuit including the same  
A reset circuit includes a plurality of registers (R1-R8) in which a logical value at power on is shifted and set to a predetermined logical value after a predetermined time has elapsed since a...
5638330 Low dissipation initialization circuit, particularly for memory registers  
An initialization circuit for memory registers, having a signal input being applied a supply voltage which rises linearly from a null value, and an initializing output connected to an input of a...
5631867 Semiconductor storage device requiring short time for program voltage to rise  
An external power source voltage Vcc rises until it exceeds the threshold voltage Vth of an NMOS transistor diode-connected between the external power source (voltage Vcc) and an internal boosted...
5629642 Power supply monitor  
In a power supply monitor which outputs a reset signal when the power supply voltage decreases, a first voltage is generated by a first voltage generator in proportion to a power supply voltage,...
5619165 Voltage threshold detection circuit with very low consumption  
A supply-voltage-monitoring circuit, for low-power integrated circuits, in which charge-sharing through a switched-capacitor chain is used to couple the supply voltage to a dynamic sensing node....
5617048 Hysteretic power-up circuit  
A power-up circuit with hysteretic characteristics for regulating the activation of one or more output buffers of an extended logic circuit. The hysteresis of the power-up circuit of the invention...
5614872 Semiconductor device having CR oscillation circuit and reset circuit  
In a semiconductor device having a CR oscillation circuit and a reset circuit, the semiconductor device includes a common terminal for constituting the CR oscillation circuit and the reset circuit....
5612582 Switching device  
The present invention provides a switching device incorporating a simple circuit capable of avoiding the flash-on of a transistor when a power supply is turned on and off thereby reducing the OFF...
5612641 Circuit for covering initial conditions when starting-up an integrated circuit device  
A circuit for resetting initial conditions upon starting of an integrated circuit device has null current consumption under normal operating conditions. The circuit includes an input stage, which...
5610541 Reset signal generation method and apparatus for use with a microcomputer  
A novel apparatus, for use with a microcomputer, for detecting an erroneous input clock signal and/or an input supply voltage to the microcomputer and providing a reliable reset signal thereto,...
5610542 Power-up detection circuit  
A power-up detection circuit which generates a power-up detection pulse by comparing the directly applied power supply voltage and the delayed power supply voltage so that the application of power...
5602502 Circuit for detecting when a supply output voltage exceeds a predetermined level  
A power-on detection circuit for detecting when a supply output voltage exceeds a predetermined level. According to a present embodiment, the power-on detection circuit generally comprises a...
5587684 Power down circuit for use in intergrated circuits  
A method of including power control features to analog integrated circuits does not require the addition of separate power control input signal pin(s). One or more existing externally applied...
5578951 CMOS circuit for improved power-on reset timing  
A power-on reset circuit includes a discharger for applying a negative voltage to the gate of a transistor and quickly discharging a first intermediate signal during a power-off state to thereby...
5570050 Zero standby current power-up reset circuit  
A circuit and method in a computer system for generating a power-up reset pulse is disclosed. A specially designed flip-flop and a voltage shifter create a signal that ramps-up with a rising...
5565811 Reference voltage generating circuit having a power conserving start-up circuit  
A power conserving circuit is disclosed which has a start-up circuit for initiating operation of a reference voltage generator. Included are a sensing circuit for producing a pulse signal in...
5565807 BiCMOS power-up circuit with hysteresis  
A BiCMOS power-up circuit for delaying the operation of an extended circuit until the voltage available to the high-potential power rail of the extended circuit is sufficiently high that all...
5565799 On chip error detection circuit  
A memory cell system is disclosed with properties of asymmetrical operation such that the occurrence of memory error due to certain environmental disturbances is detectable. The asymmetry of...
5561389 Clock conditioning circuit for microprocessor applications  
A microprocessor clocking system is provided for achieving attenuation of a clock signal sent to a microprocessor during initial activation of a connected power supply. By attenuating the clock...
5559458 Reset circuit for a pipelined signal processor  
Briefly, in accordance with one embodiment of the invention, a method of reducing the power consumption of a pipelined signal processor embedded in an integrated circuit (IC), after applying power...
5552725 Low power, slew rate insensitive power-on reset circuit  
An improved power-on reset circuit is provided for controlling reset signal transition until after the power supply has achieved operational levels. Specifically, the reset signal is designated to...
5552736 Power supply detect circuit operable shortly after an on/off cycle of the power supply  
A power supply detector circuit contained on an integrated circuit for generating an output signal changing from a first state to a second state when the power supply obtains a predetermined...
5543741 Reset circuit for generating reset pulse over an interval of reduced voltage supply  
A reset circuit comprising first apparatus for providing a reset pulse, second apparatus for enabling the first apparatus to start the reset pulse, third apparatus for detecting a voltage drop from...
5539347 Memory device initialization  
A circuit, responsive to the application of primary power, generates signals to establish the initial state of a logic circuit. Generated signals are interposed on the logic circuit's input signal...
5537077 Power supply dependent method of controlling a charge pump  
A supply voltage detect circuit is described which generates a control signal indicating the status of VCC to be at 5.0 or 3.3 volts. This control signal is used to generate analog reference...
5534804 CMOS power-on reset circuit using hysteresis  
A CMOS power-on reset circuit for generating a reset signal in response to the activation of a power supply includes a voltage clamping stage (14) and a hysteresis switching stage (16). The voltage...
5528182 Power-on signal generating circuit operating with low-dissipation current  
A P-channel field effect transistor (FET) T5 is connected between a constant current circuit constituted by first and second P-channel FETs T1 and T2 and first and second N-channel FETs T6 and T7,...
5528184 Power-on reset circuit having a low static power consumption  
A power-on reset circuit which employs a supply voltage sensing branch for triggering a first inverter of a pair of cascaded inverters. The intrinsic static consumption of such a POR circuit is...
5523709 Power-on reset circuit and method  
A circuit and method for generating a power-on reset signal with a designable hysteresis is disclosed. The circuit includes a low voltage stage, a high voltage stage, and a hysteresis stage. The...
5519346 Selective restart circuit for an electronic device  
Radiotelephones often are powered by batteries (12). When a radiotelephone is bumped, the battery (12) can lose electrical contact with the radiotelephone. When power is interrupted (40), a timer...
5519347 Start-up circuit for stable power-on of semiconductor memory device  
The present invention provides a start-up circuit including a differential amplifier receiving the internal power supply voltage as a source voltage and being driven by the reference signal, such...
5513358 Method and apparatus for power-up state initialization in a data processing system  
A method and apparatus for implementing a power-up state initialization. A power sense circuit provides a signal for indicating when the power supply, V DD , is of a voltage level greater than the...
5510741 Reset and clock circuit for providing valid power up reset signal prior to distribution of clock signal  
A reset and clock circuit for providing a valid power-up reset signal prior to distribution of a clock signal includes power sensing circuitry, a clock generator and a reset generator. The power...
5508649 Voltage level triggered ESD protection circuit  
A voltage level triggered ESD protection circuit is immune to standard signal transitions up to approximately 5.5 volts, does not consume any DC current either in the powered up or powered down...
5498987 Integratable solid state reset circuit operable over a wide temperature range  
A reset circuit asserts, de-asserts and re-asserts a reset signal in response to a voltage applied between first and second nodes to which the reset circuit is connected. The reset signal includes...
5497112 Power-out reset system  
A power-out reset circuit includes reference voltage and current generators to generate a reference voltage and a reference current which are essentially independent of temperature variations over...
5495196 User controlled reset circuit with fast recovery  
The present invention allows initializing operations such as loading configuration data and preloading registers to begin before a user has released a reset signal. A circuit is provided which...
5489863 Reset circuit  
A test signal generator outputs a test signal synchronized with the data transmission of the CPU. The test signal is supplied concurrently to a comparator and to an input unit. The output signal of...
5485111 Power on reset circuit with accurate detection at low voltages  
A supply-voltage detector having a low minimum operational voltage while having a large variation is combined with a supply-voltage detector having a high detection precision while having a high...
5483187 Power-on reset circuit  
A power-on reset circuit is disclosed comprising a capacitor for being charged to a desired voltage and then being discharged; a Schmitt trigger circuit for discriminating the voltage discharged...
5477176 Power-on reset circuit for preventing multiple word line selections during power-up of an integrated circuit memory  
A power-on reset circuit (30) for a memory (20) includes a DC model circuit (39), an N BIAS check circuit (64), and a NAND logic gate (71). A logic low power-on reset signal is provided at...
5477175 Off-line bootstrap startup circuit  
A novel off-line bootstrap startup circuit (10) including a high voltage device (100) for providing an initial bias voltage to an integrated circuit (IC) is provided. The high voltage device...
Matches 501 - 550 out of 745 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >