Matches 301 - 350 out of 745 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
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6392444 IIL reset circuit  
An IIL reset circuit includes an IIL inverter having input and output terminals, and a capacitor connected to the IIL inverter through the input terminal. When the IIL inverter is supplied with a...
6388479 Oscillator based power-on-reset circuit  
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a first signal comprising a series of one or more pulses. The second circuit may be...
6384646 Select signal generating circuit having clamp circuit for clamping select signals upon power on  
A select signal generating circuit for preventing a malfunction and an increase in the circuit area is provided. The select signal generating circuit includes a select signal generator for...
6377090 Power-on-reset circuit  
A power-on-reset circuit for delivering a power-on-reset pulse when a supply voltage ramps up from zero to a predetermined voltage includes a pull-down circuit portion for connecting an output node...
6377083 Semiconductor integrated device and methods of detecting and correcting a voltage drop in an integrated circuit  
A semiconductor integrated device has a detection cell arranged in a power-supply line in the semiconductor integrated device and detecting a power-supply voltage. Further, a detection circuit...
6369643 Apparatus and method for controlling power saving mode in a power supply  
The apparatus for controlling a power supply, which supplies power to loads, includes a low frequency clock generator generating a low frequency clock, a high frequency clock generator generating a...
6367024 Low power power-on reset circuitry having dual states  
An initializer that responds to change in a power supply potential level, for generating an initialize signal to initialize a circuit to a select state, the initializer includes a power-on reset...
6362669 Structure and method for initializing IC devices during unstable power-up  
A power-on reset (POR) circuit that delays de-assertion a POR control signal in an IC device such that, when unstable power levels are detected, the POR control signal is maintained in an asserted...
6359474 Input interface circuit  
An input interface circuit which can be used whether the power supply potential is 5 volts or 3 volts. The input interface circuit includes a comparator, a detector and a controller. The comparator...
6353337 Load capacitance measuring circuit and output buffer adaptive to wide range of load capacitance  
An output buffer includes a reference capacitor; a constant current source connected in series with the reference capacitor, for generating a reference voltage with a constant gradient by charging...
6353355 Semiconductor device enabling high-speed generation of internal power-supply potential at the time of power on  
A voltage generating circuit includes a primary reference potential signal generating circuit and a reference potential signal generating circuit, respectively generating a primary reference...
6348833 Soft starting reference voltage circuit  
A capacitor is connected to an output terminal. A constant current source charges the capacitor. A comparator compares the voltage of the output terminal with a threshold voltage. When the voltage...
6346834 Power on reset circuit  
A power on reset (POR) circuit in a semiconductor device which is process independent and resistant to noise present in a power supply voltage when the power supply voltage has not yet obtained a...
6346835 Power-on reset signal preparing circuit  
A power-on reset signal preparing circuit including a pulse width preparing circuit for generating a pulse for resetting a main circuit based on a driving voltage output from a driving circuit...
6342802 Multi-voltage power-up stable input/output buffer circuit in a disc drive  
An integrated circuit for particular use in a disc drive has a core logic module connected to a core voltage, an input/output buffer module connected to an input/output voltage and having...
6335646 Power-on reset circuit for generating a reset pulse signal upon detection of a power supply voltage  
A power-on reset circuit includes a capacitor, an inverter, a resistor and first and second transistors which are connected in series between a power supply line and ground. The electric current...
6329851 Power-on reset cell  
A power on reset cell is disclosed capable of accommodating faster power cycling rates and providing better trip point control. When the input supply voltage ramps up, the output of the power on...
6329852 Power on reset circuit  
The present invention relates to a power on reset circuit capable of stabilizing an operation of a chip by generating a reset signal regardless of a ramp up time of a power supply voltage, and...
6320809 Low voltage level power-up detection circuit  
A low voltage power-up detection circuit for use includes a programmable resistance biasing network which provides an adjustable voltage to vary a power-up voltage detection point. The programming...
6310497 Power supply loss detector method and apparatus  
A power loss detector for generating a signal indicating the need to switch from a main power supply to an auxiliary power supply responsive to detecting that the main power supply has dropped...
6307480 Integrated circuit reset incorporating battery monitor and watchdog timer  
A reset circuit that incorporates a battery monitor and watchdog timer in an integrated circuit is disclosed. A battery monitor having an output indicative of a charge state of a battery and a...
6304114 Mode setting determination signal generation circuit  
The present invention provides a mode setting determination signal generation circuit for generating a mode setting determination signal based on a power-on signal applied during power-up,...
6292123 Digital-to-analog converter with CMOS-compatible power-on reset circuit  
A power-on reset circuit employs all-CMOS circuitry to initiate a reset signal when the circuit's power supply voltage is low, and terminate the signal in response to the supply voltage exceeding a...
6288584 Zero standby-current power-on reset circuit with Schmidt trigger sensing  
A power-up-reset circuit draws zero standby current. Rather than use a voltage divider that always draws current, a capacitive-pullup divider is used as the first stage. The capacitive-pullup...
6285223 Power-up circuit for analog circuits  
A start-up circuit for supplying current to an analog circuit. The start-up circuit comprises a capacitor connected to a current mirror. A power-up signal input to the start-up circuit causes the...
6285222 Power-on reset circuit, and semiconductor device  
A /POR circuit which can detect a power-on of a power supply voltage without fail even in a case where a potential of the power supply rises gently and which produces a /POR signal having a...
6285230 Input buffer circuit with adjustable delay via an external power voltage  
An input buffer circuit compensates for a data hold time and reduces an operational current by implementing a delay operation with transistors having a long channel when the input buffer circuit is...
6281738 Bus driver, output adjusting method and driver  
A bus driver circuit includes a diode, a resistor, a constant voltage source, a constant voltage comparing circuit, the first output buffer circuit, the second output buffer circuit. An anode of...
6281724 Circuit for partial power-down on dual voltage supply integrated circuits  
An integrated circuit chip having formed thereon a voltage control circuit supply adapted to provide one of a pair of voltages selectively in accordance with an operating mode of the circuit. The...
6281723 Device and method for power-on/power-off checking of an integrated circuit  
A checking device to control the power-on or power-off operations in an integrated circuit comprises a voltage reference circuit biased by a bias circuit, and an output stage. The device further...
6281716 Potential detect circuit for detecting whether output potential of potential generation circuit has arrived at target potential or not  
A resistance element and an N channel MOS transistor are connected in series between an output terminal of a voltage generation circuit in a flash memory and a line of a ground potential. A...
6278302 Digital power-up reset circuit  
A digital power-up reset circuit is disclosed which provides a pulse of a predetermined width after a period of time after power-up. Because the power-up circuit is digital, it can be easily...
6275079 Analog delay locked loop circuit  
An analog delay locked loop circuit includes: a phase detector detecting a phase difference between an external clock signal and an internal clock signal, a charge pump performing a pumping...
6271714 Substrate voltage generator for semiconductor device  
A substrate voltage generator for a semiconductor device that prevents a substrate voltage from being generated at an abnormal level which is too low or high. Control of an oscillator and a pumping...
6268764 Bandgap voltage comparator used as a low voltage detection circuit  
A bandgap voltage comparator requiring the summing of only two current sources is used to detect low voltage conditions for an logic on an integrated circuit that may be powered from a battery,...
6259284 Charge free power-on-reset circuit  
A novel structure and method are taught for fully discharging a capacitor and thereby reducing the capacitance needed to achieve a desired RC time constant. The invention overcomes the previously...
6259287 Regulated voltage supply with low voltage inhibit reset circuit  
A regulated voltage supply contains a zener diode controlled by a constant current generator to maintain the zener voltage at a constant level regardless of the swings of the voltage input to the...
6259285 Method and apparatus for detecting supply power loss  
A circuit includes a fixed voltage drop circuit, a delay circuit, and a buffer. The delay circuit 13 coupled to the fixed voltage drop circuit, and the buffer 13 coupled to the delay circuit. The...
6259286 Method and apparatus for a power-on-reset system  
A method and apparatus for a power-on reset system is provided. The power-on reset system comprises a voltage sense circuit for determining whether a voltage level is above a threshold and a...
6252442 Electronic circuit provided with a neutralization device  
A neutralization device is provided that is designed to block the operation of an electronic circuit when this device is insufficiently supplied. The device is designed especially for electronic...
6246272 Power supply voltage detecting apparatus  
A power supply voltage detecting circuit includes: a depletion MOS transistor having its source and gate connected to the base thereof; and an enhancement MOS transistor which is serially connected...
6239630 CMOS-compatible power-on reset circuit  
A power-on reset circuit employs all-CMOS circuitry to initiate a reset signal when the circuit's power supply voltage is low, and terminate the signal in response to the supply voltage exceeding a...
6236250 Circuit for independent power-up sequencing of a multi-voltage chip  
A power-up circuit for a multi-voltage chip having two or more electrostatic devices coupled in series between first and second power supply lines, with a first electrostatic device being coupled...
6236249 Power-on reset circuit for a high density integrated circuit  
A power-on reset circuit reduces power consumption and layout area by utilizing a time delay to deactivate a reset circuit and clamp a reset signal a period of time after a power supply voltage has...
6229352 Power level detection circuit  
A level detection circuit for monitoring the level of a power supply voltage and producing an output signal at power on for resetting various system elements powered by the supply voltage when the...
6229366 Off-line converter with integrated softstart and frequency jitter  
A pulse width modulated switch comprises a first terminal, a second terminal, and a switch that allows a signal to be transmitted between the first terminal and the second terminal according to a...
6222398 Voltage detecting circuit  
The present invention provides a voltage detecting circuit comprising: at least a low voltage detecting circuit for detecting that a power voltage is lower than at least a predetermined reference...
6222399 Bandgap start-up circuit  
A circuit and a method for starting a bandgap circuit which is in a "non-start" mode. The circuit incorporates an inverter circuit with hysterysis and sharp transitions caused by a positive...
6215342 Power-on reset circuit for dual-supply system  
A power-on reset circuit for a dual-supply system. The reset circuit includes a voltage divider powered by the first power supply and a sub-circuit supplied by the second power supply. The output...
6211710 Circuit for generating a power-up configuration pulse  
A circuit for ensuring stabilized configuration information upon power-up is disclosed. In one embodiment, a semiconductor device includes a configuration information stored in a number of...
Matches 301 - 350 out of 745 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >