Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: The invention prevents reduction of a pickup rate even when a storage tape in use and a new storage tape are connected to each other with a connection tape. A component recognition camera takes an image of an electronic component held by a suction nozzle, and a recognition processing device performs recognition processing. When a positional shifting amount calculated by CPU based on the recognition processing result is more than ?, a board recognition camera takes an image of a storage portion of a storage tape storing a next electronic component to be picked up. When a positional shifting amount of the storage portion calculated based on the recognition processing result is more than ?, the CPU enables seam passage processing. Based on the image taking of the storage portion by the board recognition camera and the recognition processing by the recognition processing device which are performed each time the storage tape is fed N times, the CPU controls correction of a pickup position.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.

Abstract: The invention is directed to prevention of interference of an operation of mounting proper electronic components and improvement of usability without reduction of a manufacturing speed of printed boards. Suction states of electronic components held by suction by suction nozzles are detected by a line sensor unit. When the detection result shows that there is an improper electronic component, the improper electronic component is disposed of, and after the disposal a component recognition camera takes images of electronic components judged proper as a result of the detection and a recognition processing device performs a recognition process. When the recognition result shows that there is an improper electronic component, the improper electronic component is disposed of, and after the disposal only electronic components judged proper as a result of the recognition are mounted on a printed board.

Abstract: The invention provides an electronic component mounting apparatus which can obtain a relative vertically moving stroke of a suction nozzle and is applicable to electronic components ranging from thin to thick ones. The electronic component mounting apparatus of the invention has a suction nozzle for picking an electronic component up from a plurality of component feeding units supplying the electronic component to a component pickup position and mounting the electronic component on a printed board, where a mounting head movable along a beam can move vertically by a head vertical movement device and the suction nozzle provided on the mounting head can move vertically by a nozzle vertical movement device 50.

Abstract: The invention is directed to prevention of interference of an operation of mounting proper electronic components and improvement of usability without reduction of a manufacturing speed of printed boards. Suction states of electronic components held by suction by suction nozzles are detected by a line sensor unit. When the detection result shows that there is an improper electronic component, the improper electronic component is disposed of, and after the disposal a component recognition camera takes images of electronic components judged proper as a result of the detection and a recognition processing device performs a recognition process. When the recognition result shows that there is an improper electronic component, the improper electronic component is disposed of, and after the disposal only electronic components judged proper as a result of the recognition are mounted on a printed board.

Abstract: The invention prevents reduction of a pickup rate even when a storage tape in use and a new storage tape are connected to each other with a connection tape. A component recognition camera takes an image of an electronic component held by a suction nozzle, and a recognition processing device performs recognition processing. When a positional shifting amount calculated by CPU based on the recognition processing result is more than ?, a board recognition camera takes an image of a storage portion of a storage tape storing a next electronic component to be picked up. When a positional shifting amount of the storage portion calculated based on the recognition processing result is more than ?, the CPU enables seam passage processing. Based on the image taking of the storage portion by the board recognition camera and the recognition processing by the recognition processing device which are performed each time the storage tape is fed N times, the CPU controls correction of a pickup position.

Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.