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7427882 Method and apparatus for switching on a voltage supply of a semiconductor circuit and corresponding semiconductor circuit  
A method and an apparatus for switching on a voltage supply of a voltage domain of a semiconductor circuit is disclosed. A voltage supply is connected to a supply voltage of the semiconductor...
7425854 Power detection circuit  
This power detection circuit is comprised of a power-down detection circuit for detecting the first detection level and a power-on detection circuit having the second detection level higher than...
7420397 Low-consumption inhibit circuit with hysteresis  
An inhibit circuit which produces an inhibit signal when a variation in a power supply potential is detected includes a comparator having a negative input connected to a generator producing a...
7417476 Power-on-reset circuit with output reset to ground voltage during power off  
A power-on reset circuit includes a first circuit arranged between a high voltage supply terminal (VDD) and a low voltage supply terminal (VSS), wherein the first circuit is configured to output a...
7417475 Circuit and method for generating power up signal  
There is provided a circuit and a method for generating a power up signal. The circuit for generating a power up signal, includes an external power voltage divider for dividing a magnitude of an...
7411433 Reset ramp control  
A reset ramp control structure and method is described. A fast ramp down condition of a monitored voltage is detected and used to force the state of system reset. Delay between fast ramp detection...
7403052 Power-on detect by measuring thermal voltage  
A power-on detection circuit is arranged to cooperate with a thermal-voltage generator to determine when predictable circuit operation is achieved. The power-on detection circuit includes a...
7403051 Determining voltage level validity for a power-on reset condition  
Determining voltage level validity for a power-on reset condition is described. A supply voltage is applied to an integrated circuit. An oscillating signal is generated responsive to the supply...
7403050 Circuits for quickly generating power good signals to motherboard  
A power good signal generating circuit includes an NPN transistor, a first resistor, a second resistor, a third resistor, a first power source, and a second power source. The first resistor is...
7400188 Voltage providing circuit  
A voltage providing circuit includes a protective circuit and a power supply circuit. The protective circuit includes a first transistor. A first control signal is input to a collector of the first...
7400179 Digital power-on reset  
An apparatus comprising a plurality of flip-flops and a compare circuit. The flip-flops may each be configured to (i) receive a clock signal and an input signal and (ii) generate an output signal....
7389437 Semiconductor circuit with mask register  
A semiconductor circuit includes an integrated circuit having a backup area that is constantly powered and a power-off area that is powered off in a standby mode. A register in the power-off area...
7388414 Wideband power-on reset circuit with glitch-free output  
A chip is initialized by a power-on reset circuit, after a turned-on power supply has reached a voltage level sufficient for normal chip operation. Logic gating is used to provide a glitch-free...
7378896 Single pin for multiple functional control purposes  
A method for using a single pin to support both power input and power control functions for an integrated circuit, wherein the integrated circuit is in communication with a system. The method...
7378887 Semiconductor integrated circuit with power-on state stabilization  
The present invention is directed to assure an initial state of a circuit until a power supply voltage is stabilized at the time of power-on and to prevent an output circuit of an external...
7378886 Voltage detection circuit with hysteresis for low power, portable products  
A supply voltage level detection circuit makes use of an additional supply already provided for power. A voltage detection circuit defines a first threshold, and a differencing circuit defines a...
7372309 Reset circuit  
A circuit includes a reset circuit body and a delay circuit. The circuit body outputs a signal which indicates a reset when the supply of a supply voltage is initiated until the supply voltage...
7368960 Circuit and method for monitoring the integrity of a power supply  
Circuits and methods are provided herein for monitoring the integrity of a power supply, the circuits and methods providing additional resources/information for diagnosing a cause behind a reset...
7365387 Gate-coupled EPROM cell for printhead  
An EPROM cell in a printhead control circuit for an inkjet printer, having exactly one polysilicon layer and a conductive layer disposed above the polysilicon layer, includes a control transistor...
7362143 Circuit and method for monitoring a supply voltage and providing an indication when the supply voltage falls below a predetermined threshold  
A power supply monitoring circuit is provided that utilises an adaptive internal control of the refresh rates of capacitors to reduce the power requirements of the circuit. The circuit provides at...
7348830 Integrated circuit with automatic start-up function  
The invention relates to integrated electronic circuits, and notably to those comprising analog functions. The invention relates more particularly to a starter circuit designed to ensure the...
7348817 Circuit and method for generating circuit power on reset signal  
Disclosed is an improved circuit and method for generating a power on reset signal, the circuit being a two-stage circuit comprising a delay-stage circuit and an output-stage circuit. The...
7348816 Circuit and method for power-on reset  
In a power-on reset circuit and a method of generating a power-on reset signal tolerant of variation of an ambient temperature, the power-on reset circuit includes a first power-on reset unit, a...
7348815 All-digital power-on reset device  
A method and system is disclosed for creating a timing delay for power-on reset. A state machine is formed with three states. It resets a counter value to a predetermined number in an initial...
7348814 Power-on reset circuit  
A circuit and a method generate a power-on reset signal having a leading part and a trailing part. The circuit includes a startup circuit generating the leading part of the power-on reset signal...
7345944 Programmable detection of power failure in an integrated circuit  
A programmable power-failure-detection circuit in an integrated circuit is provided that permits programmable selection of operating modes that either monitor a power supply of the integrated...
7339417 Current source circuit  
According to the present invention, after a bias circuit ( 20 ) starts, a startup circuit ( 10 ) is isolated from the bias circuit ( 20 ) according to a bias voltage generated on an isolating...
7339410 Method and system for providing startup delay  
A method and system for providing startup delay is disclosed. The system includes a startup delay circuit. The startup delay circuit includes a signal generating sub-circuit that generates an...
7332946 Power supply voltage detection circuitry and methods for use of the same  
Power detection circuitry that provides a substantially constant trip-point is provided. The circuitry is immune to temperature and process variations, thus preventing premature or delayed...
7312644 Power failure detection circuit with fast drop response  
A device is provided for resetting an integrated circuit generating a reset signal after a power supply voltage drop to a very low level has been detected. Such a device includes at least one...
7304514 Methods and circuits for sensing on-chip voltage in powerup mode  
A method for sensing voltage on an internal node in an integrated circuit includes applying a voltage larger than a threshold value to a first pad, generating from the activation voltage a...
7301374 Chip for operating in multi power conditions and system having the same  
An apparatus for controlling an I/O interface of a chip operated in multi-power conditions includes an enable signal generator for generating an enable signal based on a chip power down signal; a...
7298187 System and method for power on reset and under voltage lockout schemes  
A system and method for power-on reset and under-voltage lockout schemes. The system includes a first transistor, which includes a first gate, a first terminal, and a second terminal, the second...
7298186 Control circuit for command signals of clock generator  
A control circuit for command signals of a clock generator includes a power supply end, an output end, a control end, a diode, a first resistor and a second resistor. The first resistor, the diode,...
7298185 Circuit arrangement for production of a reset signal after a supply has fallen and risen again  
The invention relates to a circuit arrangement for production of a reset signal after a supply voltage (Vdd) has fallen and risen again, which circuit arrangement has two cross-coupled inverters...
7295052 Regenerative power-on control circuit  
A power-on control circuit includes a coupling device coupled to a first voltage supply. A first inverter, coupled between the coupling device and a complementary voltage, has an input node coupled...
7295051 System and method for monitoring a power supply level  
A system and method are provided herein for monitoring the integrity of a power supply by monitoring a level of the power supply voltage supplied to one or more system components. The method, as...
7295050 Power-up reset circuit with reduced power consumption  
A power-up reset circuit with reduced power consumption. The resistance of the power-up reset circuit may be adjusted during a power-up operation. The standby current may thereby be reduced, which...
7292076 Low voltage pull-down circuit  
A low voltage pull-down circuit for maintaining a node at a logic LOW voltage is provided. When a logic LOW is desired, the circuit provides a low-impedance path from the node to ground. The node...
7286004 Current source circuit  
According to the present invention, after a bias circuit ( 20 ) starts, a startup circuit ( 10 ) is isolated from the bias circuit ( 20 ) according to a bias voltage generated on an isolating...
7285989 Device for detection of power-off  
A power-off detection device is formed without use of a photo coupler, which is expensive and occupies a relatively large area. The power-off detection device rectifies AC power, provided as...
7281150 Methods and apparatus for controlling operation of a data storage system  
A data storage system includes power circuitry configured to provide power signals, storage processing circuitry configured to perform data storage operations, and a packaged microcontroller...
7279943 Circuit arrangement receiving different supply voltages  
A circuit arrangement ( 1 ) has a first circuit block ( 2 ) operating at a first supply voltage and a second circuit block ( 3 ) operating at a second supply voltage. The first circuit block ( 2 )...
7276941 Power up circuit of semiconductor memory device and compensating method thereof  
There is provided a power up circuit capable of outputting a power up signal delayed by a predetermined time. The power up circuit includes a voltage divider for dividing an external voltage, a...
7274999 Brownout detector system and method  
A circuit for detecting a brownout condition may include a temperature compensating circuit that provides a temperature compensated brownout reference voltage and an input signal to compare with...
7274227 Power-on reset circuit  
A power-on reset circuit is provided. The power-on reset circuit includes an adjusting circuit, a charging/discharging unit and an output circuit. The adjusting circuit receives and adjusts a clock...
7274226 Power source voltage monitoring circuit for self-monitoring its power source voltage  
A power source voltage monitoring circuit for monitoring self power source voltage comprises a reference voltage circuit which is supplied with a power source voltage, and generates and outputs a...
7271624 Low-power supply voltage level detection circuit and method  
An input power supply voltage level detection circuit and method are presented. The circuit includes a main detector core and a two-inverter buffer block that can include a first inverter and a...
7271504 Power-on reset semiconductor and method of controlling power supply voltage  
A semiconductor integrated circuit includes a first logic circuit to which a first power supply voltage is applied and which outputs a first signal, a first level conversion circuit to which the...
7268598 Method and system for providing a power-on reset pulse  
Provided are a method and system for providing a power-on reset pulse. The system includes a level detector configured to receive an input signal and produce, at least indirectly, a reset signal...
Matches 1 - 50 out of 753 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >