摘要:
The present invention aims to provide an adhesive composition showing high adhesion and cohesion as well as good heat resistance. Adhesive compositions of the present invention include an imide (meth)acrylate, a monomer having a glass transition temperature of −50° C. or less when it is homopolymerized, and a photoinitiator, wherein the content of the imide (meth)acrylate is 1-20 parts by weight per 100 parts by weight of the monomer.
摘要:
A switch device includes a key member (4). The key member (4) has a display switch button (13) including a transparent portion through which image information displayed on a display screen of an image display device is transmitted so as to display the image information on an outer side surface of the key member (4). Further, the key member (4) has a button mounting frame (16) including a switch depressing portion (14) operative to switch a switch (6) when the key depressing portion (14) is depressed, and having a button mounting hole portion to which the display switch button (13) is attached. Furthermore, the key member (4) has a waterproof dust cover (19) of a rubber material, which is molded integrally on the button mounting frame (16) to cover the same, and which includes a support portion (17) held in intimate contact with the display screen, and a contractible skirt portion (18). A plurality of resin filling holes are formed in the button mounting frame. The rubber material, forming the waterproof dust cover (19), is filled in the resin filling holes.
摘要:
A semiconductor integrated circuit device including a semiconductor substrate having a main surface; a first conductive region formed on the main surface; a second conductive region formed on the main surface, spaced apart from the first conductive region and to be electrically connected to the first conductive region; and a capacitor having a storage node connecting the first and second conductive regions. The storage node serves to connect the first and second conductive regions and simultaneously stores charges. In other aspects of the invention, there are provided a memory cell having a structure described above, and a method of manufacturing the above-described semiconductor integrated circuit device.
摘要:
An arbiter circuit is disclosed for processing requests made at least two subsystems in a multiprocessor system for access to a resource shared by the subsystems. The arbiter circuit includes an SR flip-flop composed of a pair of NAND gates. The flip-flop is operative in response to a time-staggered request signals from the subsystems to provide a request acknowledging signal to the shared resource. When two request signals are simultaneously supplied to the arbiter circuit, the outputs from the pair of NAND gates tend to stay at an intermediate level between the normal two distincitive logic levels, failing to produce an acknowledgment signal. However, the intermediate level of the NAND gate outputs is sensed by a NOR gate to a trigger a switching device into conduction, by means of which one of the intermediate NAND gate outputs is positively shifted to either of the active logic levels for the generation of an acknowledgement signal to the shared resources. Thus, one of the two subsystems is allowed access to the shared resource.
摘要:
An LSI semiconductor memory device in which errors in reading out memory cells connected to outermost bit lines of a memory cell array of the device are substantially eliminated. In accordance with the invention, this is done by making capacitances associated with the bit lines of respective ones of the memory cell array substantially equal to one another. To accomplish this, the configuration of an inside portion of wiring other than the bit lines of the array is made the same as that of the bit lines, and the distance between the outermost bit line and the other wiring is made equal to the distance between adjacent ones of the bit lines.
摘要:
A level shifting circuit includes discharging means made up of a first high-voltage N-type transistor and a second high-voltage N-type transistor whose gates are biased respectively in a predetermined voltage and whose drains are connected to a first and second nodes respectively; and a first low-voltage N-type transistor and a second low-voltage N-type transistor whose drains are connected to sources of the first and second high-voltage N-type transistors respectively, whose gates are connected to the complementary input signal and whose sources are grounded respectively, and the predetermined voltage is set to an intermediate voltage between a threshold voltage of the first and second high-voltage N-type transistors and a breakdown voltage of the first and second low-voltage N-type transistors.
摘要:
A semiconductor memory device comprises a plurality or CAM cells. In a refreshing operation, data of "1" is applied to all of bit lines and inversion bit lines. In the CAM cells storing the data "1", writing of the data "1" onto the bit lines and the inversion bit lines is performed. Then, the data of "0" is applied to all of the bit lines and the inversion bit lines. In the CAM cells storing the data "0", writing of the data "0" onto the bit lines and the inversion bit lines is performed. In a partial writing operation, in the CAM cells to which writing is performed, a first control node is activated, thereby making it possible to write the CAM cells. In the rest of the CAM cells, the first control node is inactivated, thereby making it impossible to write the CAM cells.
摘要:
Disclosed is an arbiter circuit for arbitrating a contention between two request signals which simultaneously attain the H (logical high) level indicating a "request". In this arbiter circuit, buffer circuits, having different input logic threshold voltages, are connected to the respective outputs of two three-input NAND gates. The respective outputs of these two buffer circuits, as signals indicating "acknowledgement" or "negative acknowledgement" of the request signals, are derived as final outputs of the arbiter circuit. One of the buffer circuits has an input logic threshold voltage lower than a logic threshold voltage of the two NAND gates, while the other buffer circuit has an input logic threshold voltage set higher than the logic threshold voltage of the NAND gates. Therefore, when the NAND gates output a voltage with the logic level neither the H level nor the L (logical low) level, a signal of the logic level H indicating the "negative acknowledgement" and a signal of the logical level L indicating the "acknowledgement" are reliably outputted from the buffer circuit with the lower input logic threshold voltage and from the other buffer circuit with the higher input logic threshold voltage, respectively. That is, even if two requests occur simultaneously, one of the request signals is rapidly acknowledged.
摘要:
A dynamic RAM with static column function comprising a predecoder for predecoding both the row address and the column address to output intermediate signals, a row decoder composed of NOR circuits for selecting one row in response to said intermediate signals, a column decoder composed of NAND circuits for selecting one column in response to said intermediate signals, and a logic inversion circuit for matching the logics for the intermediate signal between the row decoder and the column decoder.
摘要:
A level shifting circuit includes a charging means consisting of a charging regulator circuit which charges a second node to a logic “H” by setting a second switching circuit to an ON state and thereafter brings back the second switching circuit to an OFF state when a first node is changed from a logic “H” to a logic “L” by a change of an input signal, and charges the first node to the logic “H” by setting a first switching circuit to the ON state and thereafter brings back the first switching circuit to the OFF state when the second node is changed from the logic “H” to the logic “L” by the change of the input signal.