M62812

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Microprocessor from the 1980s


Overview[edit | edit source]

The M62812 is an 8-bit microprocessor developed by Mitsubishi Electric in the early 1980s. It was designed for use in a variety of embedded systems, including consumer electronics, industrial control systems, and automotive applications. The M62812 is part of the larger family of microprocessors that were popular during the era for their versatility and cost-effectiveness.

Architecture[edit | edit source]

The M62812 microprocessor features a Harvard architecture, which separates the storage and signal pathways for instructions and data. This allows for simultaneous access to both, improving processing efficiency. The processor is built with a 16-bit address bus, allowing it to address up to 64KB of memory, which was substantial for its time.

Structure of the M62812 microprocessor

Instruction Set[edit | edit source]

The M62812 supports a comprehensive instruction set that includes arithmetic, logic, control, and data transfer instructions. This allows it to perform a wide range of operations, making it suitable for complex computational tasks. The instruction set is designed to be efficient, minimizing the number of cycles required to execute common operations.

Registers[edit | edit source]

The processor includes a set of general-purpose registers, which are used to store temporary data and intermediate results during computation. These registers are crucial for the efficient execution of programs, as they reduce the need to access slower main memory.

Applications[edit | edit source]

The M62812 was widely used in various applications due to its robust design and flexibility. It was commonly found in:

Legacy[edit | edit source]

Although the M62812 is no longer in production, its impact on the development of microprocessor technology is significant. It represents a key step in the evolution of embedded systems, influencing the design of subsequent generations of processors. The principles and architecture of the M62812 continue to inform modern microprocessor design.

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Contributors: Prab R. Tumpati, MD