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uPD546 Datasheet Single Chip Microcomputer

Manufacturer: NEC (now Renesas Electronics)

Overview: NEC m1eroputers,me. µPD546 µ-43 SINGLE CHIP MICROPUTER USERS' MANUAL Five Militia Drive/Lexington, Massachusetts 02173 Telephone (617) 862·6410 Telex 92·3434 TWX 710·326·6520 u - 43 SINGLE CHIP MICROPUTER USE RS ' MANUAL JANUARY 1978 NEC MICROPUTERS, INC . u-4 3 NEC MOS DIGITAL INTEGRATED CIRCUIT 4-BIT SINGLE CHIP MICROPUTER INTRODUCTION The NEC u - 43 is a 4- bit parallel central processing unit that forms a single chip microputer especially suited for a broad range of low cost and sophisticated controller applications. The u-43 contains all the necessary system functional blocks for a single chip microputer, including a 4- bit parallel ALU, 2 , 000 by 8 - bit program ROM, 96 by 4-bit data RAM, 35 input/output channels, a programmable interval timer , interrupt handling circuits, a clock generator and control circuits. The instruction set of the u -43 includes 80 powerful instructions.

Key Features

  • controller- oriented functions and efficient use of program memory , via a variety of multi-function instructions, powerful I/O instructions, and a number of bit manipulation and test-and-skip instructions . The extensive flexibility and processing capabilities provided by the uCOM -43 will enable advanced microcomputerization of both industrial and non- industrial controller.

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