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| Number | Title | Issue Date |
| 8138811 | Key press detecting circuit A key press detecting circuit for detecting the status of the key is provided. The key press detecting circuit comprises a discharging circuit which discharges when the key (K1) is pressed; and a voltage detecting circuit, which comprises a combination of a P... | 03/20/2012 |
| 8115529 | Device and control method of device A frequency divider section generates a frequency-divided clock RSELO by dividing the frequency of an internal clock LCLK, which lags behind an external clock in phase, and generates a delayed frequency-divided clock RSELI by delaying the frequency-divided clock RSE... | 02/14/2012 |
| 8072250 | Reset signal distribution Methods, circuits and systems may operate to generate a reset signal at an input reset block and synchronously distribute the reset signal, via a number of pipelined reset blocks, to multiple ports of a core circuit. The reset signal may be transmitted successively ... | 12/06/2011 |
| 8054120 | Integrated circuit operable in a standby mode An integrated circuit, comprises a wakeup terminal; a supply voltage terminal configured to receive a supply voltage; and a power control circuit. The power control circuit comprises an enable circuit coupled to the wakeup terminal and configured to generate a volta... | 11/08/2011 |
| 8026751 | Reset signal generating circuit A reset signal generating circuit for a processor includes a charging circuit, a discharging circuit, and a triggering circuit. The charging circuit receives timing pulse signals from the processor to supply charging current according to the timing pulse signals whe... | 09/27/2011 |
| 8018264 | Interface circuit An interface of the present invention includes a first inverter circuit that inverts a logic level of an input signal given to an external input terminal and outputs the inverted logic level, a second inverter circuit that outputs a potential in which a logic level ... | 09/13/2011 |
| 8004333 | Power management and control apparatus for resetting a latched protection in a power supply unit A controller which has functions of remote control, multiple protection and PWM inside. The controller can shut down and latch the converter, when a failure happens (such as under voltage and over voltage of output, and over power protection). But, under-voltage and... | 08/23/2011 |
| 7924077 | Signal processing apparatus including latch circuit A signal processing apparatus includes: a latch circuit; a set pulse generation circuit; a reset pulse generation circuit; and a correction set signal forming circuit. The correction set signal forming circuit forms a correction set signal for applying a set instruc... | 04/12/2011 |
| 7872511 | Circuit and method for initializing an internal logic unit in a semiconductor memory device Provided is a semiconductor memory device and a driving method for initializing an internal logic circuit within the semiconductor memory device under a stable state of a source voltage without an extra reset pin. The semiconductor memory device includes a power-up ... | 01/18/2011 |
| 7847610 | Semiconductor device, information processing apparatus and power supply voltage variation suppressing method According to one embodiment, a semiconductor device includes an internal circuit which is driven by a power supply voltage and is set in one of a first state and a second state in which an amount of current consumed by the internal circuit is greater than in the fir... | 12/07/2010 |
| 7764098 | Start up circuit of power converter A start up circuit of power converters is presented. It includes a first transistor, a resistive device, a second transistor, a third transistor and a diode. The first transistor is coupled to a voltage source. The third transistor is connected in serial with the fi... | 07/27/2010 |
| 7764099 | Semiconductor integrated circuit device DLL circuit operating more stably at reset. Voltage comparator circuit 21 outputs comparison result signal to hold circuit 22 at first level when power supply voltage VAA is not higher than reference voltage REF and at second level when power supply vo... | 07/27/2010 |
| 7750705 | Interface circuit An interface of the present invention includes a first inverter circuit that inverts a logic level of an input signal given to an external input terminal and outputs the inverted logic level, a second inverter circuit that outputs a potential in which a logic level ... | 07/06/2010 |
| 7696801 | Reset method for clock triggering digital circuit and related signal generating apparatus utilizing the reset method The present invention discloses a reset method for a digital circuit. The method includes: providing a clock signal to the digital circuit; keeping the clock signal at a logic level according to a first indicating signal; generating a reset signal for resetting the ... | 04/13/2010 |
| 7683686 | Power-on circuit for computer A power-on circuit of a computer includes a heat sink, an SIO chip, a connector, a first electric switch, a second electric switch, and a third electric switch. When the heat sink is installed properly, the heat sink is grounded, and the first electric switch is tur... | 03/23/2010 |
| 7656210 | Semiconductor integrated circuit A semiconductor integrated circuit that operates on multiple supply potentials including a first potential and a second potential that is higher than the first potential. The semiconductor integrated circuit includes a potential-lowering circuit operating on the sec... | 02/02/2010 |
| 7649393 | Semiconductor integrated circuit having active and sleep modes and non-retention flip-flop that is initialized when switching from sleep mode to active mode A semiconductor integrated circuit has an active mode and a sleep mode. The semiconductor integrated circuit is constructed by alternately connecting a plurality of combinational logic circuits and a plurality of flip-flops. The flip-flops include a retention flip-f... | 01/19/2010 |
| 7622974 | Semiconductor device A semiconductor integrated circuit apparatus includes a periodic signal generation circuit connected with N logical circuits, wherein the N is a natural number, outputting a periodic signal. The periodic signal generation circuit includes a reset circuit outputting ... | 11/24/2009 |
| 7616039 | Memory reset apparatus A memory reset apparatus including a first inverse circuit, a logic circuit, and a plurality of second inverse circuits is provided. The first inverse circuit receives a control signal generated by a north bridge and generates a first signal, in which the control si... | 11/10/2009 |
| 7602225 | Power on reset circuit for a digital device including an on-chip voltage down converter A power on reset circuit initializes at power on a digital integrated circuit, and includes a first power on reset signal generator powered by an external power supply voltage and generates a first power on reset signal. A reference voltage generator is powered by t... | 10/13/2009 |
| 7586350 | Circuit and method for initializing an internal logic unit in a semiconductor memory device Provided is a semiconductor memory device and a driving method for initializing an internal logic circuit within the semiconductor memory device under a stable state of a source voltage without an extra reset pin. The semiconductor memory device includes a power-up ... | 09/08/2009 |
| 7545192 | Clock stop detector A clock stop detector for a memory comprises a first switch that closes in response to a first logic level of a clock signal to charge a capacitor, a second switch that closes in response to a second logic level of the clock signal to discharge the capacitor, and a ... | 06/09/2009 |
| 7486123 | Set/reset latch with minimum single event upset A method and latch circuits are provided for implementing enhanced noise immunity performance. Each latch circuit includes an L1 latch and an L2 latch coupled to the L1 latch. Data is first latched in the L1 latch during a first half cloc... | 02/03/2009 |
| 7479817 | Semiconductor device A memory voltage monitoring circuit generates a low voltage detection signal when a power supply voltage drops below a memory contents holding voltage. A reset circuit generates a reset signal from an external reset signal and outputs the reset signal to the memory ... | 01/20/2009 |
| 7439782 | Semiconductor integrated circuit device with power-on reset circuit for detecting the operating state of an analog circuit A semiconductor integrated circuit device operates using a first power supply and a second power supply differing from the first power supply in voltage. The semiconductor integrated circuit device includes a first detecting circuit which detects that the first powe... | 10/21/2008 |
| 7439781 | Power detection circuit for non-contact IC card or RFID tag A power detection circuit has a first comparator block, a charge controller block, and a second comparator block. The first comparator block compares a supply voltage with a first threshold value, and the charge controller block controls the charging of a first capa... | 10/21/2008 |
| 7432748 | Sequence-independent power-on reset for multi-voltage circuits A power-on reset (“POR”) methodology and circuit for an electronic circuit using multiple supply voltage domains asserts a reset signal upon ramp up of the first supply voltage signal, maintains the reset signal until all of the supply voltage signals have rampe... | 10/07/2008 |
| 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 the first detection level, and the power detection circuit compulsorily... | 09/16/2008 |
| 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 reference potential and a positive input connected to an output of a first... | 09/02/2008 |
| 7420401 | Low pin count reset configuration An integrated circuit is configured with a pin for specifying a reset configuration vector of a circuitry within the integrated circuit. The resistance value of a low cost external resistor coupled to the pin is detected and utilized to identify the configuration. L... | 09/02/2008 |
| 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 external power voltage so as to output the divided voltage, an external... | 08/26/2008 |
| 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 low-voltage reset signal at an output node (PORB) when VDD is powered... | 08/26/2008 |
| 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 and the forcing of system reset is adjustable. Operation is adaptable... | 08/12/2008 |
| 7405602 | Reset control circuit and reset control method To present a reset control circuit and a reset control method used in a system including clock synchronous circuit, capable of resetting appropriately, especially in case of abnormality, when the clock signal is stopped or its period is longer as compared with the r... | 07/29/2008 |
| 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 connected between a base of the transistor and the first power source. Th... | 07/22/2008 |
| 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 voltage applied. A counting occurs responsive to oscillations of the osc... | 07/22/2008 |
| 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 comparator circuit and an inverter circuit. A power-on reset (POR) signal is... | 07/22/2008 |
| 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. The flip-flops may be configured in series such that the output signa... | 07/15/2008 |
| 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 transistor, a second control signal is input to a base of the first ... | 07/15/2008 |
| 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 second threshold. The output state of the differencing circuit is saved... | 05/27/2008 |
