摘要:
A delay circuit has a circuit structure dominated by an NMOS or a PMOS transistor. The delay circuit is supplied with, as a power supply voltage, an output voltage of a power supply voltage step-down circuit having a level generating circuit for generating a reference voltage obtained by an offset voltage and a manufacturing variation dependent voltage, and an m-time voltage generating circuit. A semiconductor device includes the delay circuit.
摘要:
A DLL circuit has a rise delay adjustment circuit and a fall delay adjustment circuit. The fall delay adjustment circuit is supplied with a clock adjusted on a rise side in the rise delay adjustment circuit. Since the clock supplied to the fall delay adjustment circuit has already been adjusted on the rise side, a delay difference on a fall side is very small. Therefore, the fall delay adjustment circuit and a fall counter can be drastically reduced in circuit scale. As a consequence, it is possible to obtain the DLL circuit having a small circuit scale and high accuracy.
摘要:
An apparatus a counter, storage units for storing count values interrupted by a row address whose refresh period is subject to change; comparator circuits for comparing the counter outputs and the contents of the storage units to each other as to whether or not the counter outputs coincide with the contents of the storage units; a holding circuit for setting an output hit signal to an active state when a coincidence signal is output from the comparator circuits and for resetting the hit signal to an inactive state in the next following clock cycle; a circuit performing control for not propagating a refresh clock signal to the counter when the hit signal is in an active state and for propagating the refresh clock signal to the counter when the hit signal is in an inactive state; a circuit for replacing an output of the counter by a row address which changes part of the counter output when the hit signal is in an activate state to replace the counter output with the row address whose refresh period is subject to change to output the row address whose refresh period is subject to change as a refresh address.
摘要:
A data transmission system including a slave device (30) and a master device (10) is disclosed. Slave device (30) may include a slave side clock signal generator section (32) for generating a slave side clock signal (CLKSOUT), a phase adjusting circuit (40) for controlling a phase of a slave side clock signal (CLKSOUT), output sections (33-1 to 33-m) for outputting transmission data signals (SD1 to SDm) in response to slave side clock signal (CLKSOUT), and a timing reference signal generator section (34) for outputting a timing reference signal (SSPH) in response to slave side clock signal (CLKSOUT). Master device (10) may include a master side clock signal generator section (11) for generating master side clock signal (CLKM), input sections (12-1 to 12-m) for sampling data signals (SD1 to SDm) in response to master side clock signal (CLKM), and a phase compare circuit (19) for generating a phase adjustment instruction signal (SADJOUT) based upon timing reference signal (SSPH) and master side clock signal (CLKM). Phase adjusting circuit (40) may adjust a phase of slave side clock signal (CLKSOUT) in response to phase adjustment instruction signal (SADJOUT). In this way, data setup and/or hold times may be improved.
摘要:
It is an object of the present invention is to provide a fuel injection valve and its apparatus, and an internal combustion engine, a method for manufacturing the fuel injection valve and its nozzle body, and a method for manufacturing the same capable of securing highly accurate and stabilized fuel spraying characteristics. The fuel injection valve comprises a nozzle body, an injection hole provided in the nozzle body, a valve body for opening and closing a fuel passage from the injection hole relative to the nozzle body, and a drive means for driving the valve body, wherein formed is a protrusion having an opening in communication with the downstream side of the injection hole of the nozzle body and which part of the side and an extreme end are opened. The invention resides in a nozzle body and manufacturing it by plastic processing, and an internal combustion engine using the same.
摘要:
To produce a fuel spray that is asymmetrical in the flow rate distribution of a sprayed fuel in order to improve the homogeneity of air-fuel mixture density during the air intake stroke injection for homogeneous combustion in an in-cylinder injection engine, the exit portion of the fuel injection hole is provided with the wall surfaces 204a, 204b, 205a, and 205b that are parallel to the central axis of the injection hole. Also, the periphery of the injection hole is provided with a plurality of areas in which the flow of the fuel in the radial direction of the injection hole will be restrained, and an plurality of areas in which the flow of the fuel in the radial direction of the injection hole will not be restrained, and a different size is assigned to each non-restraint area.
摘要:
A semiconductor memory device including a plurality of cell arrays (121 to 128) and a plurality of sense amplifier sections is disclosed. Adjacent cell arrays may have a sense amplifier section disposed between. Sense amplifiers (131 to 163) within a sense amplifier section may be connected to a bit line that is connected to a plurality of memory cells in more than one of the cell arrays (121 to 128). When a cell array (123) is activated, sense amplifier sections that may be distributed around edges of a plurality of cell arrays (122 to 124) may be activated to sense data from the activated cell array (123). In this way, current may be distributed and noise may be reduced. An activated bit line (227) may be adjacent to a precharged bit line (250) in a non-activated cell array (124). In this way, cross-talk between activated bit lines may be reduced.
摘要:
A DLL (delay locked loop) circuit includes a signal propagation system and a delay control system. The signal propagation system includes a delay circuit which delays a reference clock signal based on a delay control signal to generate a delayed clock signal. The delay control system includes a sampling circuit, a phase comparing circuit and a delay control circuit. The sampling circuit outputs a first clock signal having a pulse corresponding to one of n (n is an integer more than 1) pulses of the delayed clock signal. The phase comparing circuit compares the first clock signal as a first comparison input signal and the reference clock signal as a second comparison input signal in phase to output a phase difference. The delay control circuit generates the delay control signal based on the phase difference from the phase comparing circuit to output to the delay circuit of the signal propagation system.
摘要:
In a semiconductor memory device, a row decoder is connected to a plurality of word lines to select one of the plurality of word lines in response to a row address. A word line driving section drives, in response to a row address strobe signal, the selected word line to a first potential higher by a predetermined potential than a predetermined second potential, for a read or write operation to a selected memory cell connected to the selected word line and a selected pair of bit lines. The second potential is higher than a power supply higher side potential. A sense amplifier activating section issues sense amplifier activating signals for the write operation to the selected memory cell in response to a sense control signal such that a data having a potential higher than the power supply higher side potential can be written or rewritten in the selected memory cell. Each of a plurality of sense amplifiers amplifies the data on corresponding pair of bit lines in response to the sense amplifier activating signals. In the read operation, the read data is outputted from an input/output section via a column selecting section for selecting and connecting one of the plurality of pairs of bit lines to the input/output section in response to a column address.
摘要:
A semiconductor laser with a self-sustained pulsation is disclosed in which a first cladding layer of first conductive type, an active layer and a second cladding layer of second conductive type having a striped ridge are formed in that order on a semiconductor substrate of first conductive type. The first and second cladding layers have a refractive index smaller than and a band gap larger than the active layer. A saturable optical absorbing layer having a band gap of energy substantially equal to the energy corresponding to lasing wavelength is formed in both the first and second cladding layers. Further, a barrier layer having a refractive index smaller than and a band gap larger than the first and second cladding layers is formed between the first cladding layer and the active layer and/or between the active layer and the second cladding layer.