Intel 80286
The Intel 80286 (also marketed as the iAPX 286 and often called Intel 286) is a 16-bit microprocessor that was introduced on February 1, 1982. It was the first 8086-based CPU with separate, non-multiplexed address and data buses and also the first with memory management and wide protection abilities. The 80286 used approximately 134,000 transistors in its original nMOS (HMOS) incarnation and, just like the contemporary 80186, it could correctly execute most software written for the earlier Intel 8086 and 8088 processors.
An Intel A80286-8 processor with a gray ceramic heat spreader | |
| General information | |
|---|---|
| Launched | February 1982 |
| Discontinued | 1991 |
| Common manufacturer(s) | |
| Performance | |
| Max. CPU clock rate | 4 MHz to 25 MHz |
| FSB speeds | 4 MHz to 25 MHz |
| Data width | 16 bits |
| Address width | 24 bits |
| Architecture and classification | |
| Technology node | 1.5 µm |
| Instruction set | x86-16 (with MMU) |
| Physical specifications | |
| Transistors |
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| Co-processor | Intel 80287 |
| Package(s) | |
| Socket(s) |
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| History | |
| Predecessor(s) | 8086, 8088 (while 80186 was contemporary) |
| Successor(s) | Intel 80386 |
| Support status | |
| Unsupported | |
The 80286 was employed for the IBM PC/AT, introduced in 1984, and then widely used in most PC/AT compatible computers until the early 1990s. In 1987, Intel shipped its five-millionth 80286 microprocessor.
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