Intel 80386
Sign in to savethumb|Intel A80386DX-20 CPU die image
Key facts
- CPU.name
- i386
- CPU.image
- frameless|upright=0.5|class=skin-invertframeless|upright=1
- CPU.caption
- An Intel i386DX 16 MHz processor with a gray ceramic heat spreader
- CPU.manuf1
- Intel
- CPU.manuf2
- AMD
- CPU.manuf3
- IBM
- CPU.produced start
- October 1985
- CPU.produced end
- September 28, 2007
- CPU.slowest
- 12
- CPU.slow unit
- MHz
- CPU.fastest
- 40
- CPU.fast unit
- MHz
- CPU.size from
- 1.5 μm
- CPU.size to
- 1 μm
- CPU.arch
- x86-16, IA-32
- CPU.pack1
- 132-pin PGA, 132-pin PQFP; SX variant: 88-pin PGA, 100-pin BQFP with 0.635 mm pitch
- CPU.predecessor
- Intel 80286
- CPU.successor
- i486
via Wikipedia infobox
Article
26 sectionsContents
- Production history
- Architecture
- Data types
- Example code
- Business importance
- Compatibles
- Early problems
- Pin-compatible upgrades
- Models and variants
- Early 5 V models
- i386DX
- M80386
- {{anchor|The 80386SX variant}} 80386SX
- 80386SL{{anchor|The i386SL variant}}
- SnapIn 386
- RapidCAD
- Versions for embedded systems
- 80376
- i386EX, i386EXTB and i386EXTC
- i386CXSA and i386SXSA (or i386SXTA)
- i386CXSB
- Obsolescence
- See also
- Notes
- References
- External links
thumb|Intel A80386DX-20 CPU die image
The Intel 386, originally released as the 80386 and later renamed i386, is the first 32-bit processor in the line, marking it a significant evolution in the x86 microarchitecture. It is the third-generation x86 architecture microprocessor developed jointly by AMD, IBM and Intel. Pre-production samples of the 386 were released to select developers in October 1985, while mass production commenced in June 1986. It implements the IA-32 microarchitecture, and is the first CPU to do so. It was the central processing unit (CPU) of many workstations and high-end personal computers of the time. It began to fall out of public use starting with the release of the i486 processor in 1989, while in embedded systems the 386 remained in widespread use until Intel finally discontinued it in 2007.