IP80C88

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IP80C88 is an embedded, 8-bit microprocessor that was developed by Intel, first released in 1987. The IP80C88 was designed as a low-cost microprocessor, intended for use in low-end applications such as embedded controllers and handheld calculators. It was Intel’s first 8-bit microprocessor to feature a seven-layer cache hierarchy, as well as a contemporary bus architecture, aimed at improving performance and compatibility.

Application Fields

The IP80C88 is well-suited for applications requiring low power, low cost, and small size, such as embedded controllers, calculators, and industrial control equipment. Additionally, the IP80C88 has been used in automotive, medical electronic, and security equipment, as well as in alarm systems and remote sensing equipment.

The IP80C88 can be programmed in assembly language, C, or high-level language (HLL). This makes it also well-suited for embedded applications requiring memory organization, as well as data and address bus arbitration.

Working Principle

The IP80C88 consists of three main components: a register set, an arithmetic logic unit (ALU), and a program control unit (PCU). The register set includes 8 8-bit registers, R0 through R7. These registers are used to store data and temporary results during program execution. The ALU performs arithmetic and logical operations, such as addition and subtraction, as well as shifting and bit manipulation.

The PCU performs the tasks associated with program flow control, such as branch and loop control statements. It also provides memory organization, data and address bus arbitration, and interrupt handling. The PCU reads the instructions stored in memory, decodes them, and executes them in sequence. The PCU also controls the flow of data between the registers, the ALU, and memory.

The IP80C88 also includes several other features, such as a 16-bit stack pointer, an alternate 8-bit data pointer, and an interrupt control unit. Additionally, the IP80C88 includes several bus interfaces, such as the industry standard IEEE-488 bus. This allows the microprocessor to be easily interfaced with peripherals and other devices.

The IP80C88 can be used in a variety of applications, ranging from small, low-power systems to large-scale embedded systems. Its low power, low cost, and small size make it well-suited for applications requiring a small footprint and high performance. Additionally, its compatibility with HLL, as well as its wide range of bus interfaces, make it easy to integrate into existing systems.

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