摘要:
A circuit on an end column of a divided memory array is formed by a block selection transistor having the same shape as that of a memory cell transistor. As the pattern of the connecting section between the main bit line and the sub-bit line is made in the same shape as that of the memory cell, it is possible to realize a pattern uniformity and to eliminate the need for using memory array dummy patterns.
摘要:
An electronic equipment system includes a semiconductor integrated circuit having a nonvolatile memory storing information on a characteristic of the semiconductor integrated circuit; and a controller configured to control the semiconductor integrated circuit. The controller has a function of adjusting an access parameter to the semiconductor integrated circuit based on the information stored in the nonvolatile memory.
摘要:
An electronic equipment system includes a semiconductor integrated circuit having a nonvolatile memory storing information on a characteristic of the semiconductor integrated circuit; and a controller configured to control the semiconductor integrated circuit. The controller has a function of adjusting an access parameter to the semiconductor integrated circuit based on the information stored in the nonvolatile memory.
摘要:
In a semiconductor memory device in which each memory cell is constituted by one transistor, in a memory cell pattern, two adjacent bits form one diffusion pattern, two adjacent transistors share a source region, and two drain regions are separated from each other. A plurality of arrays in each of which at least a column of the diffusion patterns is disposed include bit lines, and the bit lines of the first array are independent of the bit lines of the second array. In an interface between the arrays, ends at one side of the bit lines of each of the arrays are located on an associated one of two drain regions which are separated from each other with the source region which is shared on one diffusion pattern sandwiched therebetween. This configuration can provide a sufficient bit-line separation width, and reduce the area.
摘要:
An automatic wire feeder of a wire electric discharge machine in which electric discharge is generated between a traveling wire electrode (1) and a workpiece so as to machine the workpiece by the electric discharge energy, comprises: a feed roller (2) for feeding the wire electrode (1); a slider block (11) supported being capable of going up and down; a guide pipe (9), fixed to the slider block (11), for guiding the wire electrode (1); a hollow member (10), fixed to the slider block (11), the outer diameter of which is reduced in a wire feed direction; and a pressurized gas supply for supplying pressurized gas toward the outer diameter of the hollow member (10), wherein a forward end section of the hollow member (10) is inserted into an inner diameter section of an upper section of the guide pipe (9) while a predetermined overlapping length L is kept, a predetermined clearance D1 is formed between the inner diameter of the guide pipe (9) and the outer diameter of the forward end section of the hollow member (10), and a thrust is given to the wire electrode (1) by pressurized gas, which is supplied by the pressurized gas supply. By the conveyance force of pressurized gas flowing in the guide pipe (9), the wire electrode (1) can be automatically fed with high reliability.
摘要:
An offsetting comparator device includes master and slave comparator circuits and a reference differential voltage generator. The master comparator circuit supplies a sensed current corresponding to a potential difference represented by a differential signal on a transmission line. The reference differential voltage generator generates a reference differential voltage based on an intermediate potential of the differential signal. And the slave comparator circuit supplies a current corresponding to the potential difference as offset current. The offsetting comparator device outputs a differential current between the sensed and offset currents and therefore shows an offset in its input/output characteristics. The master and slave comparator circuits have the same circuit configuration. Thus, if the characteristic of the sensed current output from the master comparator circuit has changed due to a potential level variation of the differential signal, then the characteristic of the offset current also changes similarly. Thus, the offsetting comparator device can obtain a constant offset voltage even if the potential level of the differential signal has changed.
摘要:
A data line pair and a strobe line pair are provided between first and second chips to exchange data therebetween. The first chip includes an output circuit and a controller for controlling the output circuit. The second chip includes an input circuit. For example, the output circuit supplies a direct current from a power supply to one of the data lines. Then, the input circuit feeds back the received current to the output circuit through a pair of terminal resistors and the other data line. Subsequently, the output circuit supplies the fed back direct current to one of the strobe lines. In response, the input circuit feeds back the received current again to the output circuit through another pair of terminal resistors and the other strobe line. And then the fed back current is drained to the ground. Thus, compared to driving the data and strobe line pairs separately with the same amount of current supplied, the current dissipation can be halved. In this manner, the present invention is applicable to reduction of current dissipation when data should be transmitted at high speeds through multiple data bus pairs that are driven with a current supplied.
摘要:
There is provided a time counting circuit for measuring a pulse spacing of a pulse signal with high accuracy and with low power consumption. An inverter ring composed of an odd number of inverters connected in a ring oscillates and one signal transition occurs after another as though seemingly circulating around the inverter ring. Holding circuits connected to respective output terminals of the inverters composing the inverter ring output, on the rising edge of a pulse signal to be measured, signals outputted from the inverters at the same time. The outputted signals are then converted by a signal converting circuit to numeric data. A counter circuit connected to the output terminal of one of the inverters composing the inverter ring counts the number of circulations of signal transition. A time-difference operating circuit corrects the numeric data outputted from the signal converting circuit based on the number of circulations of signal transition outputted from the counter circuit to provide time data, while calculating and outputting the pulse spacing of the pulse signal to be measured.
摘要:
A stabilizer for polymeric substances made up of a sulfur-containing compound of the formula: ##STR1## wherein R.sub.1 represents an alkyl group having 4 to 20 carbon atoms and a phenolic compound of the general formula: ##STR2## wherein R.sub.2 represents an alkyl group having 1 to 4 carbon atoms, in the ratio (I):(II) of 1:0.1-2 by weight.The combination of the above stabilizer with a polymeric substance, such as synthetic rubber is also contemplated herein.
摘要:
An acetylene carbamide derivative of the general formula (I): ##STR1## wherein A represents ##STR2## wherein R.sub.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, is disclosed. A process for producing the acetylene carbamide derivative of the general formula (I) is also disclosed. The acetylene carbamide derivative of the invention is useful as a stabilizer for organic substances from heat and oxidation.