MICROCONTROLLER
    1.
    发明专利

    公开(公告)号:JPH0588905A

    公开(公告)日:1993-04-09

    申请号:JP1362892

    申请日:1992-01-29

    Abstract: PURPOSE: To obtain a microcomputer including a static RAM for internally storing program instructions and a program interface for obtaining the program instructions from an external source and storing the program instructions in this static RAM. CONSTITUTION: The microcontroller 10 of a type including an execution unit 20 for executing the stored program instructions consists of a memory system 12 for storing the program instructions and including a memory means for storing the program instructions, a memory means including the static RAM 14 and the program interface means 16 which is coupled to the static RAM 14 and is arranged so as to couple to the external source of the program instructions and programs the static RAM 14 by applying the program instructions from the external source for the program instructions to the static RAM 14.

    MULTIPLE PERIPHERAL CONTROLLER
    2.
    发明专利

    公开(公告)号:JPH04367055A

    公开(公告)日:1992-12-18

    申请号:JP1069892

    申请日:1992-01-24

    Abstract: PURPOSE: To provide a peripheral controller for interfacing plural peripheral controllers to a central processing unit in which at least one pair of serial port interfaces, parallel port interface, hard disk drive interface, and keyboard microcontroller are included, and all are integrated in the same integrated circuit. CONSTITUTION: A peripheral controller 10 includes a multi-bit data bus 16, multi-bit address bus 18, control bus 20, first and second serial port interfaces 22 and 24, parallel port 26, floppy disk controller I/F 28, hard disk drive I/F 30, keyboard microcontroller 32, and input and output port I/F 38. Moreover, the peripheral controller 10 includes a host I/F 34 and a multiplexer 36.

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