Intel386TM SX MICROPROCESSOR
Y
Y
Y
Full 32-Bit Internal Architecture
Ð 8-, 16-, 32-Bit Data Types
Ð 8 General Purpose 32-Bit Registers
Large Uniform Address Space
Ð 16 Megabyte Physical
Ð 64 Terabyte Virtual
Ð 4 Gigabyte Maximum Segment Size
Runs Intel386TM Software in a Cost
Effective 16-Bit Hardware Environment
Ð Runs Same Applications and O.S.’s
as the Intel386TM DX Processor
Ð Object Code Compatible with 8086,
80186, 80286, and Intel386TM
Numerics Support with the Intel387TM
SX Math CoProcessor
Y
Y
Y
On-Chip Debugging Support Including
Breakpoint Registers
Complete System Development
Support
Ð Software: C, PL/M, Assembler
Ð Debuggers: PMON-386 DX,
ICETM-386 SX
Processors
Y
Y
High Performance 16-Bit Data Bus
Ð 16, 20, 25 and 33 MHz Clock
Ð Two-Clock Bus Cycles
Ð Address Pipelining Allows Use of
Slower/Cheaper Memories
Y
Y
High Speed CHMOS IV Technology
Operating Frequency:
Ð Standard
Integrated Memory Management Unit
Ð Virtual Memory Support
(Intel386 SX -33, -25, -20, -16)
Min/Max Frequency
(4/33, 4/25, 4/20, 4/16) MHz
Ð Low Power
Ð Optional On-Chip Paging
Ð 4 Levels of Hardware Enforced
Protection
Ð MMU Fully Compatible with Those of
the 80286 and Intel386 DX CPUs
(Intel386 SX -33, -25, -20, -16, -12)
Min/Max Frequency
(2/33, 2/25, 2/20, 2/16, 2/12) MHz
Y
Virtual 8086 Mode Allows Execution of
8086 Software in a Protected and
Paged System
Y
100-Pin Plastic Quad Flatpack Package
Ý
(See Packaging Outlines and Dimensions 231369)
The Intel386TM 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 Intel386TM 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.
240187–47
Intel386TM 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’s 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