Matches 201 - 250 out of 350 < 1 2 3 4 5 6 7 >
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5867051 Digital joystick interface circuit  
A digital joystick interface circuit includes a trigger detecting circuit, a flip-flop circuit and a value comparator. The trigger detecting circuit is provided for processing the changes of the...
5825220 Auto-clear circuit and integrated circuit including an auto-clear circuit for initialization based on a power supply voltage  
An auto-clear circuit which has a switch device connected between a power supply voltage terminal and first and second nodes, and a potential division device, connected between the first node and a...
5808485 Clock clamping circuit that prevents clock glitching and method therefor  
A system for clamping a clock signal line that prevents clock glitching is disclosed. The system is comprised of a plurality of logic gates which generates a signal to clamp the clock signal line...
5805001 Zero phase circuit for sampled data phase locked loop  
A circuit provides a restart signal to indicate a zero crossing of a continuous varying signal. A zero phase signal is generalized based on a zero crossing of the continuous varying signal. The...
5786719 Mode setting circuit and mode setting apparatus used to select a particular semiconductor function  
A semiconductor apparatus includes a mode setting circuit with reduced power consumption to select one of a plurality of functions produced by the apparatus. The mode setting circuit includes a...
5786716 Signal generator for generating test mode signals  
A signal generator for generating test mode signals when any voltage higher than a recommended input high voltage is applied to a predetermined input pin, and for switching from a normal mode to a...
5783950 Phase comparator  
A reset signal generating circuit included in a phase comparator of a PLL circuit includes fourth and second transistors having their respective gates connected to the gates of first and third...
5767709 Synchronous test mode initalization  
The entire data path of a synchronous integrated circuit device is initialized in a test mode upon power-up of the synchronous integrated circuit device. Upon power-up of the integrated circuit...
5761255 Edge-synchronized clock recovery unit  
A clock recovery unit for recovering a clock embedded in a data communication is disclosed. The clock recovery unit includes an oscillator (50) operating at a frequency close to that of the clock...
5754070 Metastableproof flip-flop  
A metastableproof flip-flop receives an input value on a flip-flop input. The flip-flop holds an output value on a flip-flop output. In response to a transition of a clock signal, a transition in...
5754068 CMOS logic LSI having a long internal wiring conductor for signal transmission  
In a semiconductor integrated circuit having an internal wiring conductor for transferring an internal signal, an intermediate voltage generator generates an intermediate voltage equal to a half of...
5754069 Mechanism for automatically enabling and disabling clock signals  
A mechanism for automatically enabling and disabling clock signals includes a driver for providing a clock signal as an output, a gate coupled to the driver, and a sensing circuit coupled to both...
5751182 Rapid start-up circuit for voltage reference and method of operation  
A rapid start-up voltage reference (8) is provided. The rapid start-up voltage reference (8) includes a voltage reference circuit (10) operable responsive to a shut-down signal ENABLE. The...
5739708 Circuit configuration for generating an enable signal for a clock-controllable circuit  
A circuit configuration for generating an enable signal for a clock-controlled circuit includes a device for generating a power-on reset signal. Deactivation of that signal is delayed through the...
5734288 Apparatus for and method of autozeroing the output of a charge-to-voltage converter  
The invention is an autozeroing circuit for use in processing low level electrical charge signals by an integrating operational amplifier. The autozeroing circuit includes a switching circuit that...
5734280 Semiconductor integrated circuit device having power on reset circuit  
A semiconductor integrated circuit device has an internal circuit node reset signal generation circuit for inverting an output signal with a predetermined time lag immediately after application of...
5731812 Liquid crystal display (LCD) protection circuit  
A display protection circuit includes a first OR gate which receives a first pulse at one input and a first clock signal at another input. A second OR gate receives the first pulse at one input and...
5723990 Integrated circuit having high voltage detection circuit  
A high voltage detection circuit implemented in an integrated circuit which is switchable between a normal operation mode and an alternative operation mode and having contact pads for electrically...
5696461 Power-on reset circuit  
A threshold detection circuit for generating a detection signal when a power supply voltage exceeds a predetermined threshold. The threshold detection circuit comprises a first detection stage, a...
5689202 Integrated circuit for automatic determination of PCI signaling environment--either 3.3V or 5V  
An integrated circuit automatically detects a Peripheral Component Interconnect signaling environment, which may be based on either a first voltage or a second voltage, and matches output voltage...
5675271 Extended chip select reset apparatus and method  
An extended chip select reset circuit to generate a reset signal for a device, such as a SLAC, using the chip select line. When the chip select line has been maintained in an active state for at...
5675272 Power level sensing for mixed voltage chip design  
A power supply voltage level sensing circuit and its application to circuits that interface with circuits that have performance characteristics that conform to universally accepted standards such...
5666073 Power dissipation limiter for high frequency switch  
The command input of a high frequency switch is gated with the output of a power dissipation limiter. The limiter includes a counter that counts pulses of the command input. Between regularly...
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...
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...
5654989 Method and apparatus for symbol timing tracking  
An apparatus and method for symbol timing tracking has a decimation index input (42). The decimation index (42) is connected to an upper threshold limiter (44) and a lower threshold limiter (46)....
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,...
5623218 Address transition signal detecting circuit  
An address transition signal detecting circuit includes a differentiator for receiving and differentiating an address input signal, and a pulse signal forming portion for receiving the signal...
5619155 IC-chip operation inhibitor  
An IC chip operation inhibitor to prevent operation of an IC chip in a system having a clock rate that exceeds a predetermined reference clock rate for the chip. The inhibitor has a frequency...
5617047 Reset and pulse width control circuits for high-performance multi-port memories and register files  
A single sequential timing chain provides inadequate precision of reset-pulse timing and inadequate reset-pulsewidth control for high-performance memories or register files incorporating dynamic...
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...
5596293 Noise resistant reset circuit for a phase detector in a phase-locked loop  
A reset circuit for a phase detector in a phase-locked loop is described. A first set of input lines receives a first set of latched signals corresponding to a cycle of a reference signal applied...
5596288 Status register with asynchronous read and reset and method for providing same  
A single bit status register includes an input flip-flop, an asynchronous latch having an input coupled to an output of the input flip-flop, a comparator for comparing the outputs of the flip-flop...
5576650 Reset circuit of electronic device  
A processor outputs a state signal representing the process state toga reset circuit. Upon reception of a reset signal from an external reset switch, the reset circuit outputs the reset signal to...
5574393 Apparatus and method for immediately stopping clocks  
A bypass means is provided for bypassing a system clock disabling signal around a conventional system clock disabling signal processing path to reduce the amount of delay between the occurrence of...
5568100 Synchronous power down clock oscillator device  
This invention provides a synchronous, power down oscillating device that provides only uniform pulses having no glitches at its output. The circuit is able to provide a synchronous output for two...
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...
5554952 Fast responding method and apparatus for three phase A/C voltage sensing  
An apparatus for generating a sensing signal from a generally periodic multi-phase AC signal is set forth. The apparatus utilizes a plurality of integrator circuits, a single integrator circuit...
5550490 Single-rail self-resetting logic circuitry  
A forward single-rail self-resetting reset circuit is utilized to reset a logic circuit to a selected state subsequent to each iteration of a logical operation on inputted data into the logic...
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...
5539343 Horizontal synchronizing signal generating circuit  
There is disclosed a horizontal synchronizing signal generating circuit for generating a horizontal synchronizing signal which has no frequency variations and which is in phase with an entered...
5537055 Method for protecting an ASIC by resetting it after a predetermined time period  
A design protection circuit for a logic circuit comprised of a counter for receiving clock pulses with the logic circuit and apparatus for resetting the logic circuit upon the counter counting a...
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...
5523710 Initial value setting circuit  
A voltage level of an output node is reversed by an inverter. An output of the inverter is used as an initial setting signal. A feedback switching transistor is also provided in an initial value...
5510740 Method for synchronizing clocks upon reset  
A synchronized clocking circuit receives a clock signal and, in accordance with the received clock signal, provides a divided-down clock signal having a known phase relationship with respect to the...
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...
5498989 Integrated circuit one shot with extended length output pulse  
An integrated circuit one shot circuit provides relatively long duration (hundreds of nanoseconds up to a millisecond) output pulses without the need for excessively large transistors. The one shot...
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...
Matches 201 - 250 out of 350 < 1 2 3 4 5 6 7 >