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Difference between revisions of "intel/80386"
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| {{\|80386-16}} ||  1985 || 32-bit || 16 MHz ||  
 
| {{\|80386-16}} ||  1985 || 32-bit || 16 MHz ||  
 
|-
 
|-
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| {{\|80386-20}} ||  1985 || 32-bit || 20 MHz ||  
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| {{\|80386-20}} ||  February 1987 || 32-bit || 20 MHz ||  
 
|-
 
|-
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| {{\|80386DX-16}} || 1985 || 32-bit || 16 MHz ||  
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| {{\|80386DX-16}} || 1988 || 32-bit || 16 MHz ||  
 
|-
 
|-
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| {{\|80386DX-20}} || February 1987 || 32-bit || 20 MHz ||
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| {{\|80386DX-20}} || 1988 || 32-bit || 20 MHz ||
 
|-
 
|-
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| {{\|80386DX-25}} || April 1988 || 32-bit || 25 MHz ||
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| {{\|80386DX-25}} || 1988 || 32-bit || 25 MHz ||
 
|-
 
|-
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| {{\|80386DX-33}} || April 1988 || 32-bit || 33 MHz ||
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| {{\|80386DX-33}} || 1988 || 32-bit || 33 MHz ||
 
|-
 
|-
 
| {{\|80386DX-16 IV}} ||  || 32-bit || 16 MHz ||
 
| {{\|80386DX-16 IV}} ||  || 32-bit || 16 MHz ||

Revision as of 16:01, 3 May 2016

Intel 80386
KL Intel i386DX.jpg
Intel A80386DX-16 ΣΣ
Developer Intel
Manufacturer Intel
Type Microprocessors
Introduction June 1985 (announced)
October 1985 (launch)
Production 1984-2008
Architecture x86
ISA IA-32
µarch 80386
Word size 32 bit
4 octets
8 nibbles
Process 1.5 µm
1,500 nm
0.0015 mm
, 1 µm
1,000 nm
0.001 mm
Technology CMOS
Clock 12 MHz-33 MHz
Package PGA-132, PQFP-132
Succession
← →
80286 80486

The 80386, also i386 and 386, (pronounced eighty-three-eighty-six) was a family of 32-bit 3rd-generation x86 microprocessors introduced by Intel in 1985 as a successor to 80286. These processors provided were fully backwards compatible with previous generations of x86 processors but introduced a number of major new features including enhancements to protected mode and virtual 8086 mode. The changes brought about by 386 became the standard for all future 32-bit x86 processors, dubbed i386-architecture.

History

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Members

Model Introduction Ext. Bus Frequency Notes
80386-12 October 1985 32-bit 12 MHz
80386-16 1985 32-bit 16 MHz
80386-20 February 1987 32-bit 20 MHz
80386DX-16 1988 32-bit 16 MHz
80386DX-20 1988 32-bit 20 MHz
80386DX-25 1988 32-bit 25 MHz
80386DX-33 1988 32-bit 33 MHz
80386DX-16 IV 32-bit 16 MHz
80386DX-20 IV 32-bit 20 MHz
80386DX-25 IV 32-bit 25 MHz
80386DX-33 IV 32-bit 33 MHz
80386SX-16 June 1988 16-bit 16 MHz
80386SX-20 June 1988 16-bit 20 MHz
80386SX-25 June 1988 16-bit 25 MHz
80386SX-33 October 1992 16-bit 33 MHz
80386SL-20 October 1992 16-bit 33 MHz
80386SL-25 October 1992 16-bit 33 MHz

Suppport Chips

Part Description
A82370-16 32-bit 8-channel DMA controller @ 16 MB/sec
82380-16 32-bit DMA controller with Programmable Interrupt Controller (PIC) @ 16 MHz
82380-20 32-bit DMA controller with Programmable Interrupt Controller (PIC) @ 20 MHz
82380-25 32-bit DMA controller with Programmable Interrupt Controller (PIC) @ 25 MHz
82384-16 Clock generator @ 16 MHz
82384-20 Clock generator @ 20 MHz
82385 Cache Controller

Clones

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Architecture

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Retrieved from "https://en.wikichip.org/w/index.php?title=intel/80386&oldid=17740"
Facts about "80386 - Intel"
RDF feed
designerIntel +
first announcedJune 1985 +
first launchedOctober 1985 +
full page nameintel/80386 +
instance ofmicroprocessor family +
instruction set architectureIA-32 +
main designerIntel +
manufacturerIntel +
microarchitecture80386 +
nameIntel 80386 +
packagePGA-132 + and PQFP-132 +
process1,500 nm (1.5 μm, 0.0015 mm) + and 1,000 nm (1 μm, 0.001 mm) +
technologyCMOS +
word size32 bit (4 octets, 8 nibbles) +