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Intel 80286

Intel 80286
KL Intel i286.jpg
An Intel A80286-8 processor with a gray ceramic heat spreader
General information
Common manufacturer(s)
Max. CPU clock rate5 MHz to 25 MHz
FSB speeds5 MHz to 25 MHz
Data width16 bits
Address width
Architecture and classification
Instruction setx86-16 (with MMU)
Physical specifications
Co-processorIntel 80287
Predecessor8086, 8088 (while 80186 was contemporary)
SuccessorIntel 80386

The Intel 80286[3] (also marketed as the iAPX 286[4] 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,[5] it could correctly execute most software written for the earlier Intel 8086 and 8088 processors.[6]

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.

  1. ^ "CPU History - The CPU Museum - Life Cycle of the CPU". cpushack.com. Archived from the original on July 20, 2021. Retrieved September 6, 2021.
  2. ^ "1.5 µm lithography process - WikiChip". en.wikichip.org. Archived from the original on September 9, 2018. Retrieved January 21, 2019.
  3. ^ "Microprocessor Hall of Fame". Intel. Archived from the original on July 6, 2007. Retrieved August 11, 2007.
  4. ^ iAPX 286 Programmer's Reference (PDF). Intel. 1983. page 1-1. Archived (PDF) from the original on August 28, 2017. Retrieved August 28, 2017.
  5. ^ A simpler cousin in the 8086-line with integrated peripherals, intended for embedded systems.
  6. ^ "Intel Museum – Microprocessor Hall of Fame". Intel.com. May 14, 2009. Archived from the original on March 12, 2009. Retrieved June 20, 2009.

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