摘要:
A conventional layout of power supply protective element cannot sufficiently protect an internal circuit against a surge current that flows into a narrow branch line that branches off from a thick main wiring line. A semiconductor device according to an embodiment of the present invention includes a power supply protective element connected around a terminal; a main wiring line connected with a VCC pad or a GND pad; a branch line that branches off from the main wiring line and applies a power supply potential or a ground potential to a functional block of the semiconductor device; a branching portion at which the branch line branches off from the main wiring line; and an internal power supply protective element connected with the branch line.
摘要:
A cellulose acylate film is stretched in the longitudinal direction by 1-300% under such conditions that the ration of the stretching distance (L) to the width (W) of the film before stretching, i.e., length/width ratio (L/W), is higher than 0.01 and lower than 0.3. The film stretched is relaxed in the longitudinal direction by 1-50% to produce a cellulose acylate film. When this film is incorporated in a liquid-crystal display, it can prevent the occurrence of color unevenness even when used in an high-temperature high-humidity atmosphere.
摘要:
A semiconductor device includes: a first memory; and a second memory. The first memory includes: a first memory cell array configured to be divided into a plurality of sectors, an erasure time setting register configured to hold a sector erasure assurance time to assure an erasure time for erasing data stored in one sector, and a first control circuit configured to execute a sector erasure test in which data stored in at least one selected sector selected from the plurality of sectors are erased within the sector erasure assurance time. The second memory includes: a second memory cell array configured to have a data storage system different from that of the first memory cell array, and a second control circuit configured to execute a data hold test with respect to the second memory cell array while the sector erasure test is executed.
摘要:
A cellulose acylate film in which the number of V-shaped thickness-uneven portions having a variation width in the thickness direction of 0.1 to 10% of a film thickness and a width in the in-plane direction of 1 to 20 mm is in the range of 0 to 10 per 100 m in the length direction of the film. A display unevenness is solved in a liquid crystal display device having the cellulose acylate film.
摘要:
A method of producing a transparent thermoplastic film comprising transversely stretching a film by 1% to 200%, wherein a ratio (Lc/Wc) of a clutch length (Lc) of a chuck to a clutch depth (Wc) of the chuck in the transverse stretching zone is in the range of 3 to 50.
摘要:
There are provided a balance adjustment circuit (6) for adjusting levels of first and second detection signals from a tracking detector, a differential circuit (8) for generating a difference signal between the adjusted first and second detection signals, an AD conversion circuit (10) for digitizing the difference signal, a wobble signal detection circuit (14) for detecting a wobble signal from the digitized difference signal, an adder circuit (30) for generating a sum signal of the adjusted first and second detection signals, a binarization circuit (32) for converting the sum signal into a binarized signal, a latch circuit (33) for latching the binarized signal and converting the same into a timing signal, a control signal generation circuit (34) for generating a control signal based on the timing signal and the digitized difference signal, a residual component removal circuit (18) for removing a residual signal component included in the digitized difference signal based on the control signal and outputting a LPP detection signal, and an address detection circuit (21) for detecting address information from the LPP detection signal. The wobble signal and the LPP signal are detected reliably with a simple configuration.
摘要:
A playback clock extracting device having: a quantization member for quantizing, at a sampling clock rate having a rate twice a recording rate, a signal played back from a recording medium so as to output sample data, a digital equalizer for subjecting the sample data to digital equalization so as to alternately output playback data and PLL data at an interval of one sampling clock, cycle a ternary decision member for making a ternary decision as to whether the playback data is positive, zero or negative. The playback clock extracting device further having arithmetic unit for calculating a sampling phase error in the quantization member by multiplying a result of the decision of the ternary decision member by a difference between two successive data values of the PLL data outputted immediately prior to and immediately after the playback data for the decision of the ternary decision member, respectively, a sampling clock generating member which controls a phase and an oscillation frequency on the basis of the sampling phase error outputted by the arithmetic unit so as to generate the sampling clock, and a playback clock generating member which divides a frequency of the sampling clock by two so as to generate a playback clock for detecting the playback data.
摘要:
In a semiconductor memory device including memory cells, first and second decoders generate first and second selection signals, and a driver circuit generates a drive signal for driving the memory cells. The driver circuit includes a transfer gate, controlled by the first selection signal, thus passing the second selection signal to generate the drive signal.
摘要:
In a semiconductor memory storing multivalue information, a sense section includes a first latch receiving an output of a first differential amplifier in a sense amplifier, a second latch receiving an output of a second differential amplifier in the sense amplifier and an output of the first latch, and a third latch receiving an output of a third differential amplifier in the sense amplifier and an output of the second latch. When a selected memory cell has the lowest threshold, the output of the first latch becomes a low level, and correspondingly, the output of the second latch is forcibly brought to the low level in response to the low level of the output of the first latch, and then, the output of the third latch is forcibly brought to the low level in response to the low level of the output of the second latch. Therefore, even if the output of the second and third differential amplifiers varies because of power supply voltage noises, the data can be correctly read out without being influenced by the power supply voltage noises.
摘要:
An electrically erasable and programmable read only memory device has a sense amplifier circuit for changing an output voltage level at the output node thereof indicative of either an erased or a write-in state of a memory cell to be accessed, and the output voltage level is compared with a reference voltage level so as to see whether the output voltage is indicative of the erased state or the write-in state, wherein the sense amplifier circuit is associated with a current make-up circuit for compensating the current to the output node of the sense amplifier circuit so that the output voltage level rapidly reaches a high or low voltage level regardless of fluctuation of the reference voltage level.