
February 1994
Order Number: 271110-003
MILITARY i386
TM
SX MICROPROCESSOR
Y
Full 32-Bit Internal Architecture
D 8-, 16-, 32-Bit Data Types
D 8 General Purpose 32-Bit Registers
Y
Runs Intel386
TM
Software in a Cost
Effective 16-Bit Hardware Environment
D Runs Same Applications and O.S.’s
as the Military i386
TM
DX Processor
D Object Code Compatible with M8086,
M80186, M80286, and i386
Processors
D Runs MS-DOS
*
, OS/2
*
and UNIX
**
Y
Very High Performance 16-Bit Data Bus
D 20 MHz Clock
D Two-Clock Bus Cycles
D 20 Megabytes/Sec Bus Bandwidth
D Address Pipelining Allows Use of
Slower/Cheaper Memories
Y
Integrated Memory Management Unit
D Virtual Memory Support
D Optional On-Chip Paging
D 4 Levels of Hardware Enforced
Protection
D MMU Fully Compatible with Those of
the M80286 and i386 DX CPUs
Y
Large Uniform Address Space
D 16 Megabyte Physical
D 64 Terabyte Virtual
D 4 Gigabyte Maximum Segment Size
Y
Virtual M8086 Mode Allows Execution
of M8086 Software in a Protected and
Paged System
Y
High Speed Numerics Support with the
Military i387
TM
SX Coprocessor
Y
On-Chip Debugging Support Including
Breakpoint Registers
Y
Complete System Development
Support
D Software: C, PL/M, Assembler
D Debuggers: PMON-i386 DX,
ICE
TM
-i386 SX
D Extensive Third-Party Support: C,
Pascal, FORTRAN, BASIC, Ada
***
on
VAX, UNIX
**
, MS-DOS
*
, and Other
Hosts
Y
High Speed CHMOS IV Technology
Y
88-Lead Pin Grid Array Package
(See Packaging Specification, Order
Y
231369)
Y
100-Lead Plastic Flat Pack Package
Y
Available in Four Product Grades:
D MIL-STD-883 (PGA),
b
55
§
C to
a
125
§
C (T
C
)
D Military Temperature Only (PGA),
b
55
§
C to
a
125
§
C (T
C
)
D Extended Temperature (PGA),
b
40
§
C to
a
110
§
C (T
C
)
D Extended Temperature (PQFP),
b
20
§
C to
a
100
§
C (T
C
)
The Military i386 SX Microprocessor is a 32-bit CPU with a 16-bit external data bus and a 24-bit external
address bus. The i386 SX CPU brings the high-performance software of the Intel386 Architecture to midrange
systems. It provides the performance benefits of a 32-bit programming architecture with the cost savings
associated with 16-bit hardware systems.
271110–1
i386
TM
SX Pipelined 32-Bit Microarchitecture
*
MS-DOS and OS/2 are trademarks of Microsoft Corporation.
**
UNIX is a trademark of AT&T.
***
Ada is a trademark of the Department of Defense.