Intel386
TM
SX MICROPROCESSOR
Y
Full 32-Bit Internal Architecture
8- 16- 32-Bit Data Types
8 General Purpose 32-Bit Registers
Runs Intel386
TM
Software in a Cost
Effective 16-Bit Hardware Environment
Runs Same Applications and O S 鈥檚
as the Intel386
TM
DX Processor
Object Code Compatible with 8086
80186 80286 and Intel386
TM
Processors
High Performance 16-Bit Data Bus
16 20 25 and 33 MHz Clock
Two-Clock Bus Cycles
Address Pipelining Allows Use of
Slower Cheaper Memories
Integrated Memory Management Unit
Virtual Memory Support
Optional On-Chip Paging
4 Levels of Hardware Enforced
Protection
MMU Fully Compatible with Those of
the 80286 and Intel386 DX CPUs
Virtual 8086 Mode Allows Execution of
8086 Software in a Protected and
Paged System
Y
Y
Large Uniform Address Space
16 Megabyte Physical
64 Terabyte Virtual
4 Gigabyte Maximum Segment Size
Numerics Support with the Intel387
TM
SX Math CoProcessor
On-Chip Debugging Support Including
Breakpoint Registers
Complete System Development
Support
Software C PL M Assembler
Debuggers PMON-386 DX
ICE
TM
-386 SX
High Speed CHMOS IV Technology
Operating Frequency
Standard
(Intel386 SX -33 -25 -20 -16)
Min Max Frequency
(4 33 4 25 4 20 4 16) MHz
Low Power
(Intel386 SX -33 -25 -20 -16 -12)
Min Max Frequency
(2 33 2 25 2 20 2 16 2 12) MHz
100-Pin Plastic Quad Flatpack Package
(See Packaging Outlines and Dimensions
231369)
Y
Y
Y
Y
Y
Y
Y
Y
Y
The Intel386
TM
SX Microprocessor is an entry-level 32-bit CPU with a 16-bit external data bus and a 24-bit
external address bus The Intel386 SX CPU brings the vast software library of the Intel386
TM
Architecture to
entry-level systems It provides the performance benefits of a 32-bit programming architecture with the cost
savings associated with 16-bit hardware systems
240187 鈥?7
Intel386
TM
SX Pipelined 32-Bit Microarchitecture
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel鈥檚 Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT
INTEL CORPORATION 1995
January 1994
Order Number 240187-008