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Maxwell Technologies
Maxwell Technologies

80387DX Datasheet Preview

80387DX Datasheet

Math Coprocessor

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80387DX pdf
80387DX
Math Coprocessor
80387
Logic Diagram
FEATURES:
DESCRIPTION:
• 80-Bit numeric processor
Maxwell's 80387DX high speed microcircuit features a greater
• RAD-PAK® radiation hardened against natural space radia- than 100 kilorad (Si) total dose tolerance. Using Maxwell's
tion radiation hardened RAD-PAK® packaging technology, the
• Total dose hardness:
80387DX is a high-performance numerics processor that
- > 100 krad (Si)
extends the 80386DX architecture with floating point,
- dependant upon space mission
extended integer and BCD data types. The computing system
• Single Event Effects:
fully conforms to the ANSI/IEEE floating-point standard.
- SEU Threshold is ~ 3.38 MeV/mg/cm2
Using a numerics oriented architecture, the 80387DX adds
- SEL Threshold = 37.1 - 59.9 MeV/mg/cm2
over seventy mnemonics to the 80386DX instruction set, mak-
• Package: 68-pin RAD-PA® quad flat pack
ing the 80386DX/80387DX a complete solution for high-per-
• Eight 80-bit numeric registers, usable as individual addres- formance numerics processing.
sable general registers or as a register stack
• Data types include:
Maxwell Technologies' patented RAD-PAK packaging technol-
- 32-, 64-, 80-bit floating point
ogy incorporates radiation shielding in the microcircuit pack-
- 32-, 64-bit integers
m- 18-digit BCD operands
o• 5 V Only power
.c• Built-in exception handling
u• Upward object code compatible with All 80X87DX micro-
t4processors
e• Full-range transcendental operations for SINE, COSINE,
eTANGENT, ARCTANGENT and LOGARITHM
age. It eliminates the need for box shielding while providing
the required radiation shielding for a lifetime in orbit or space
mission. In a GEO orbit, RAD-PAK provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
tash 05.07.02 REV 1
www.da(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
All data sheets are subject to change without notice 1
©2002 Maxwell Technologies
All rights reserved.



Maxwell Technologies
Maxwell Technologies

80387DX Datasheet Preview

80387DX Datasheet

Math Coprocessor

No Preview Available !

80387DX pdf
Math Coprocessor
80387DX
TABLE 1. PINOUT DESCRIPTION
PIN SYMBOL
DESCRIPTION
1, 12, 19, 21, 35, 49, 53, 56 VSS Ground
2, 13, 20, 32, 36, 39, 52, 68 VCC Positive Power Supply
3-11, 18, 22-31, 33, 34, 37, D4-D12, D15, D16-25, D26, D27, Data Bus
38, 40, 41, 64-67
D28, D29, D30, D31, D0-D3
42 CKM Clock Mode
43
386CLK2
386 CPU Clock 2
44
387CLK2
387 MCP Clock 2
45
RESETIN
System Reset
46 NC Not Connected
47 59
Tie High
Tie High
48
READY
Bus Ready Input
50
CMD0
Command
51 ADS Address Strobe
54
NPS2
MCP Select #2
55
NPS1
MCP Select #1
57 W/R Write/Read
58
STEN
Status Enable
60
READYO
Ready Output
61
BUSY
Busy Status
62
ERROR
Error Status
63
PEREQ
Processor Extension Request
TABLE 2. ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MIN
Voltage, any pin, with respect to Ground
Power Dissipation
Storage Temperature Range
Operating Temperature Range
Lead Temperature (soldering 10 seconds)
VCC -0.5
PD --
TS -65
TA -55
--
MAX
VCC+0.5
1.5
150
125
260
UNIT
V
W
°C
°C
°C
05.07.02 REV 1
All data sheets are subject to change without notice 2
©2002 Maxwell Technologies
All rights reserved.


Part Number 80387DX
Description Math Coprocessor
Maker Maxwell Technologies
Total Page 17 Pages
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