M80287 Datasheet, PDF (1/24 Pages) Intel Corporation – 80-BIT HMOS* NUMERIC PROCESSOR EXTENSION

M80287
80-BIT HMOS
NUMERIC PROCESSOR EXTENSION
Military
Y High Performance 80-Bit Internal
Architecture
Y Implements Proposed IEEE Floating
Point Standard 754
Y Expands M80286 10 Datatypes to
Include 32- 64- 80-Bit Floating Point
32- 64-Bit Integers and 18-Digit BCD
Operands
Y Object Code Compatible with M8087
Y Built-In Exception Handling
Y Operates in Both Real and Protected
Mode M80286 Systems
Y Available in a 40-Pin Cerdip Package
Y Protected Mode Operation Completely
Conforms to the M80286 Memory
Management and Protection
Mechanisms
Y Directly Extends M80286 10 Instruction
Set to Trigonometric Logarithmic
Exponential and Arithmetic Instructions
for All Datatypes
Y 8 x 80-Bit Individually Addressable
Numeric Register Stack
Y 6 8 10 MHz
Y Military Temperature Range
b_{55 C to} a_{125 C (TC)}
The Intel M80287 is a high performance numerics processor extension that extends the M80286 10 architec-
ture with floating point extended integer and BCD data types The M80286 20 computing system (M80286
and M80287) fully conforms to the proposed IEEE Floating Point Standard Using a numerics oriented archi-
tecture the M80287 adds over fifty mnemonics to the M80286 20 instruction set making the M80286 20 a
complete solution for high performance numeric processing The M80287 is implemented in N-channel deple-
tion load silicon gate technology (HMOS) and packaged in a 40-pin ceramic package The M80286 20 is
object code compatible with the M80286 20 and M8088 20 Intel’s HMOS III process provides superior
radiation tolerance for applications with stringent radiation requirements
HMOS is a patented process of Intel Corporation
Figure 1 M80287 Block Diagram
271029 – 1
NOTE
271029 – 2
N C pins must not be connected
Figure 2 M80287 Pin
Configuration
December 1990
Order Number 271029-005