摘要:
A master slice LSI with fault detection circuitry includes a packed transistor area consisting of rows of semiconductor devices packed on a substrate. Parts of the rows are used for providing an application specific integrated circuit (ASIC). Remaining parts of the rows are used for providing fault detection circuitry for finding faulty semiconductor devices. The fault detection circuitry includes shift registers, sense amplifiers, and a decoder. The detection circuitry is provided only for those rows of semiconductor devices used for providing the intended purpose ASIC.
摘要:
A method for designing a semiconductor device includes computing a contact resistance value based on an allowable power supply voltage drop set for a second position corresponding to a given region of a second power supply line on a second wiring layer different from a first wiring layer, and computing a number of vias for the given region based on a result of a comparison between a resistance value of a via coupling a first power supply line and the second power supply line and the contact resistance value.
摘要:
A floorplanning apparatus includes a seed position decision section for deciding a placement position of a logic seed of each hierarchical block; a cell placement section for placing cells belonging to the hierarchical block around the placement position of each logic seed; and a placement region decision section for deciding placement and routing regions of each hierarchical block considering cell placement results produced by the cell placement section.
摘要:
A home electronics system enabling rapid execution of remote control of controlled devices includes a home server, a cellular phone connected to the home server via a public line network, and devices to be controlled controlled in response to a signal from the home server. When the user selects via cellular phone an area, a state or a type of the devices to, the home server creates an image of the current state information showing the state of the devices for transmitting to the cellular phone.
摘要:
A built-in self-test circuit including a signal generator and operational elements. The operational elements perform arithmetic operations on a test signal value A, generated by the signal generator, to obtain a comparison signal value A which is fundamentally equal to the test signal value A of the signal generator. By comparing the test signal value A with the comparison signal value A, a test result is obtained.
摘要:
A scan flip flop with a selector is inserted into a position on a path where a timing error has occurred, based on timing analysis in a logic BIST mode, so that the path where the timing error has occurred is pipelined.
摘要:
A logic circuit synthesizer is disclosed which synthesizes a better dimensioned logic circuit which has improved electrical characteristics. A logic circuit leveling part levels logic circuit data while referring to a leveling dictionary and maintaining logic function frames to thereby output leveled logic circuit data which contains information about logic function frames. The leveled logic circuit data are then given to a logic circuit synthesizing part where they are leveled using a conversion library and considering the information about logic function frames, whereby synthesized logic circuit data are produced. Since the synthesizing is performed in light of the information about logic function frames and what are prescribed in the conversion library a resultant synthesized logic circuit is improved in terms of both electrical characteristics and a dimension accuracy.
摘要:
An air bag coating composition is obtained by emulsifying (A) an organopolysiloxane containing at least two alkenyl groups each attached to a silicon atom, (B) an organohydrogenpolysiloxane containing at least three hydrogen atoms each attached to a silicon atom, and (C) a curing catalyst in water in the presence of an emulsifier to form an aqueous silicone emulsion. The composition cures into a coating which firmly adheres to an air bag base fabric and provides a tack-free surface.
摘要:
Silicone rubber compositions which comprise (A) an organopolysiloxane, which possesses at least one triorganosilyl-amine group expressed by the following equation (1) at its molecular end and a degree of polymerization which is at least 2000, and the silicone rubber compositions which further comprise (B) a fine powdered silica whose specific surface area is at least 50 m.sup.2 /g, ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each a substituted or unsubstituted monovalent hydrocarbon group, each of which can be the same or different. The silicone rubber compositions are a non-fluidity type; therefore, they offer superior workability and formability. Further, silicone rubber obtained by the curing of the said compositions possess superior physical properties, extremely low hardness, flexibility, and good rubber elasticity, thus they are useful as raw materials of various products.
摘要:
A curable organopolysiloxane putty-like composition comprising an organopolysiloxane having at least two alkenyl groups in one molecule, an organohydrogenpolysiloxane having at least three .tbd.SiH groups, a catalytic amount of platinum or a platinum compound, and an inorganic filler. This composition further comprises an organopolysiloxane modified with an alkyl group directly bonded to silicon atoms and having from 7 to 30 carbon atoms whereby the modified organosiloxane serving as an oil properly exudes prior to curing but does not exude appreciably after the curing. The composition is suitable particularly for impressions.