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80387
80387DX
Math Coprocessor
Memory
Logic DiagramLogic Diagram
FEATURES:
• 80-Bit numeric processor
•R
AD-PAK® radiation hardened against natural space radia-
tion
• Total dose hardness:
- > 100 krad (Si)
- dependant upon space mission
• Single Event Effects:
- SEU Threshold is ~ 3.38 MeV/mg/cm
- SEL Threshold = 37.1 - 59.9 MeV/mg/cm
• Package: 68-pin RAD-PA® quad flat pack
• Eight 80-bit numeric registers, usable as individual addressable general registers or as a register stack
• Data types include:
- 32-, 64-, 80-bit floating point
- 32-, 64-bit integers
- 18-digit BCD operands
• 5 V Only power
• Built-in exception handling
• Upward object code compatible with All 80X87DX microprocessors
• Full-range transcendental operations for SINE, COSINE,
TANGENT, ARCTANGENT and LOGARITHM
2
2
DESCRIPTION:
Maxwell's 80387DX high speed microcircuit features a greater
than 100 kilorad (Si) total dose tolerance. Using Maxwell's
radiation hardened R
80387DX is a high-performance numerics processor that
extends the 80386DX architecture with floating point,
extended integer and BCD data types. The computing system
fully conforms to the ANSI/IEEE floating-point standard.
Using a numerics oriented architecture, the 80387DX adds
over seventy mnemonics to the 80386DX instruction set, making the 80386DX/80387DX a complete solution for high-performance numerics processing.
Maxwell Technologies' patented R
ogy incorporates radiation shielding in the microcircuit package. 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, R
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
AD-PAK® packaging technology, the
AD-PAK packaging technol-
AD-PAK provides greater than 100
11. 08. 01R evA
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
PIN SYMBOL DESCRIPTION
80387DX
TABLE 1. PINOUT DESCRIPTION
1, 12, 19, 21, 35, 49, 53, 56 V
2, 13, 20, 32, 36, 39, 52, 68 V
3-11, 18, 22-31, 33, 34, 37,
38, 40, 41, 64-67
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
50 CMD0
51 ADS
54 NPS2 MCP Select #2
55 NPS1
57 W/R
58 STEN Status Enable
60 READYO
61 BUSY
D4-D12, D15, D16-25, D26, D27,
D28, D29, D30, D31, D0-D3
SS
CC
Ground
Positive Power Supply
Data Bus
Bus Ready Input
Command
Address Strobe
MCP Select #1
Write/Read
Ready Output
Busy Status
Memory
62 ERROR
63 PEREQ Processor Extension Request
Error Status
TABLE 2. ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL MIN MAX UNIT
Voltage, any pin, with respect to Ground V
Power Dissipation P
Storage Temperature Range T
Operating Temperature Range T
Lead Temperature (soldering 10 seconds) -- 260
11. 08. 01R evA
CC
D
S
A
All data sheets are subject to change without notice
-0.5 VCC+0.5 V
-- 1.5 W
-65 150
-55 125
°
C
°
C
°
C
©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
80387DX
TABLE 3. DELTA LIMITS
PARAMETER VARIATION
I
LI
I
LO
I
CLK2 = 32 MHz ±25 mA
CC
I
CLK2 = 50 MHz ±39 mA
CC
± 1.5 µA
±1.5 µA
TABLE 4. RECOMMENDED OPERATING CONDITIONS
PARAMETER SYMBOL MIN MAX UNIT
Supply Voltage V
Input Low Voltage V
Input High Voltage V
Operating Temperature T
TABLE 5. 80387DX DC ELECTRICAL CHARACTERISTICS
(VCC = 4.75V TO 5.25V; TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED)
P
ARAMETER SYMBOL TEST CONDITIONS MIN MAX UNIT
Input Low Voltage V
Input High Voltage V
386 CLK2 Input Low Voltage V
386 CLK2 Input High Voltage V
Output Low Voltage V
Output High Voltage V
Input Leakage Current I
Output Leakage Current I
Power Supply Current I
Input Capacitance C
Output Capacitance C
CLK2 Capacitance C
1
IL
1
IH
CL
CH
OLIOL
= 4 mA, D0-D31, IOL = 2.5 mA
READYO , ERROR, BUSY, PEREQ
OHIOH
= -1 mA, D0-D31, IOH = -0.6 mA
READYO, READYO, ERROR, BUSY,
PEREQ
0V < VIN < V
LI
LO
CC
0.45V < V
CLK2 = 32 MHz
OUT
CC
< V
CC
CLK2 = 40 MHz
CLK2 = 50 MHz
FC = 1 MHz -- 10 pF
IN
FC = 1 MHz -- 12 pF
O
CLKFC
= 1 MHz -- 20 pF
2
CC
4.75 5.25 V
IL
IH
A
-0.3 0.8 V
2.0 VCC +0.3 V
-55 125 °C
--
--
0.8
--
Memory
V
2.0 -- V
-- 0.8 V
3.7 -- V
-- 0.45 V
2.4 -- V
±15 µA
-- ±15 µA
--
--
--
250
310
390
mA
1. This parameter is for all inputs, including 387CLK2 but excluding 386CLK2.
2. Icc is measured at steady state, maximum capacitive loading on the outputs, and worst-case DC level at the inputs;
386CLK2 at the same frequency as 387CLK2.
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
TABLE 6. 80387DX COMBINATIONS OF BUS INTERFACE AND EXECUTION SPEEDS
(VCC = 4.75V TO 5.25V; TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED)
P
ARAMETER SYMBOL TEST CONDITIONS MIN MAX UNIT
80387DX
Bus INterface Unit
-16
-20
-25
Execution Unit
-16
-20
-25
P
ARAMETER SYMBOL TEST CONDITION MIN MAX UNIT
387CLK2 Period
-16
-20
-25
387CLK2 High Time
-16
-20
-25
387CLK2 High Time
-16
-20
-25
387CLK2 Low Time
-16
-20
-25
387CLK2 Low Time
-16
-20
-25
387CLK2 Fall Time
-16
-20
-25
387CLK2 Rise Time
-16
-20
-25
16
20
25
16
20
25
TABLE 7. 80387DX TIMING REQUIREMENTS OF THE EXECUTION UNIT
(VCC = 4.75V TO 5.25V; TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED)
t
1
t
2a
t
2b
t
3a
t
3b
t
4
t
5
At 2V
31
25
20
At 2V
9
8
7
At 3.7V
5
5
4
At 2V
9
8
7
At 0.8V
7
6
5
At 3.7V to 0.8V
--
--
--
At 0.8V to 3.7V
--
--
--
MHz
--
--
--
MHz
--
--
--
Memory
ns
125
125
125
ns
--
--
--
ns
--
--
--
ns
--
--
--
ns
--
--
--
ns
8
8
7
ns
8
8
7
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
80387DX
TABLE 8. 80387DX TIMING REQUIREMENTS OF THE BUS INTERFACE UNIT (OUTPUT TRIP LEVEL = 1.5V)
(VCC = 4.75V TO 5.25V; TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED)
P
ARAMETER CONDITIONS SYMBOL MIN MAX UNIT
386CLK2 Period
-16
-20
-25
386CLK2 High Time
-16
-20
-25
386CLK2 High Time
-16
-20
-25
386CLK2 Low Time
-16
-20
-25
386CLK2 Low Time
-16
-20
-25
386CLK2 Fall Time
-16
-20
-25
At 2.0V t
At 2.0V t
At 3.7V t
At 2V t
At 0.8V t
At 3.7V to 0.8V t
1
2a
2b
3a
3b
4
31
25
20
125
125
125
9
8
7
5
5
4
9
8
7
7
6
5
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
8
8
7
ns
ns
ns
ns
Memory
ns
ns
386CLK2 Rise Time
-16
-20
-25
At 0.8V to 3.7V t
5
--
--
--
8
8
7
386 CLK2/387CLK2 Ratio -- 10/16 14/10 --
READYO
Out Delay
-16
-20
-25
PEREQ, ERROR
-16
-20
-25
BUSY
Out Delay
-16
-20
-25
11. 08. 01R evA
Out Delay
C
= 50 pF t
L
C
= 50 pF t
L
C
= 50 pF t
L
7
4
3
3
7
5
5
4
7
5
5
4
All data sheets are subject to change without notice
34
31
24
34
34
33
34
29
29
ns
ns
ns
ns
5
©2001 Maxwell Technologies
All rights reserved.
Page 6
Math Coprocessor
80387DX
TABLE 8. 80387DX TIMING REQUIREMENTS OF THE BUS INTERFACE UNIT (OUTPUT TRIP LEVEL = 1.5V)
(VCC = 4.75V TO 5.25V; TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED)
P
ARAMETER CONDITIONS SYMBOL MIN MAX UNIT
D31 - D0 Out Delay
C
= 50 pF t
L
-16
-20
-25
D31 - D0 Setup Time t
D31 - D0 Hold Delay t
D31 - D0 Float Time
C
= 50 pF
L
1
-16
-20
-25
PEREQ, BUSY
READYO
Float Time
, ERROR,
C
= 50 pF
L
1
-16
-20
-25
ADS
, W/R Setup Time
-16
-20
-25
ADS
, W/R Hold Time
-16
-20
-25
READY
SetupTime
-16
-20
-25
READY
Hold Time
-16
-20
-25
8
10
11
t
12
t
13
t
14
t
15
t
16
t
17
1
1
0
54
54
50
11 ns
11 ns
6
6
5
1
1
1
26
21
16
5
5
4
21
12
9
4
4
4
33
27
24
60
50
40
--
--
--
--
--
--
--
--
--
--
--
--
ns
ns
ns
Memory
ns
ns
ns
ns
CMDO
SetupTime
-16
-20
-25
CMDO
HoldTime
-16
-20
-25
NPS1,
NPS2 Setup Time
-16
-20
-25
11. 08. 01R evA
t
16
t
17
t
16
All data sheets are subject to change without notice
21
19
16
21
19
16
--
--
--
2
4
4
--
--
--
--
--
--
©2001 Maxwell Technologies
All rights reserved.
ns
ns
ns
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Math Coprocessor
80387DX
TABLE 8. 80387DX TIMING REQUIREMENTS OF THE BUS INTERFACE UNIT (OUTPUT TRIP LEVEL = 1.5V)
(VCC = 4.75V TO 5.25V; TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED)
P
ARAMETER CONDITIONS SYMBOL MIN MAX UNIT
NPS1, NPS2 Hold Time
-16
-20
-25
STEN Setup Time
-16
-20
-25
STEN Hold Time
-16
-20
-25
RESETIN Setup Time
-16
-20
-25
RESETIN Hold Time
-16
-20
-25
1. Float condition occurs when maximum output current becomes less than I
t
17
t
16
t
17
t
18
t
19
in magnitude. Float Delay is not tested.
LO
21
21
15
13
12
10
2
2
4
--
--
--
--
--
--
2
2
4
--
--
--
--
--
--
4
4
3
--
--
--
ns
ns
ns
ns
Memory
ns
TABLE 9. 80387DX TIMING REQUIREMENT OF OTHER PARAMETER
PARAMETER SYMBOL MIN MAX UNIT
RESETIN Duration t
RESETIN Inactive to First Opcode Write t
BUSY
Duration t
ERROR
Inactive to BUSY Inactive t
PEREQ Inactive to ERROR
READY
Active to Busy Active t
READY
Minimum Time from Opcode Write to Opcode to Opcode/
Operand Write
READY
Minimum Time from Operand Write to Operand Write t
Active t
30
31
32
33
34
35
t
36
37
40 (387 CLK2)
50 (387 CLK2)
6 (386 CLK2)
6 (386 CLK2)
6 (386 CLK2)
0 4 (386 CLK2)
6 (386 CLK2)
8 (386 CLK2)
11. 08. 01R evA
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©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
FIGURE 1. TIMING DIAGRAMS - FAST TRANSITIONS TO AND FROM PIPELINED CYCLES
80387DX
Memory
11. 08. 01R evA
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©2001 Maxwell Technologies
All rights reserved.
8
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Math Coprocessor
FIGURE 2. TIMING DIAGRAM – NON-PIPELINED READ AND WRITE CYCLES
80387DX
Memory
11. 08. 01R evA
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©2001 Maxwell Technologies
All rights reserved.
9
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Math Coprocessor
FIGURE 3. TIMING DIAGRAM – PIPLINED CYCLES WITH WAIT STATES
80387DX
Memory
FIGURE 4. TIMING DIAGRAM – STEN, BUSY, AND PEREQ TIMING RELATIONSHIP
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
10
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Math Coprocessor
80387DX
FIGURE 5. TIMING DIAGRAM – 386CLK2/387CLK2 WAVEFORM AND MEASUREMENT POINTS FOR INPUT/
UTPUT AC SPECIFICATIONS
O
Memory
11. 08. 01R evA
FIGURE 6. TIMING DIAGRAM – TEST CIRCUIT
All data sheets are subject to change without notice
11
©2001 Maxwell Technologies
All rights reserved.
Page 12
Math Coprocessor
80387DX
FIGURE 7. TIMING DIAGRAM – RESET
FIGURE 8. TIMING DIAGRAM – OUTPUT
Memory
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
12
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Math Coprocessor
FIGURE 9. TIMING DIAGRAM – INPUT AND I/O SIGNALS
80387DX
Memory
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
13
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Math Coprocessor
FIGURE 10. TIMING DIAGRAM – FLOAT FROM STEN
F
80387DX
IGURE 11. TIMING DIAGRAM – OTHER PARAMETERS
Memory
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
80387DX
Memory
14 PIN RAD-PAK® FLAT PACKAGE
SYMBOL DIMENSION
MIN NOM MAX
A 0.121 0.135 0.145
b 0.016 0.018 0.020
c 0.008 0.010 0.012
D 0.940 0.950 0.960
D1 0.800 BSC
e 0.050 BSC
S1 0.013 0.066 --
F1 0.645 0.650 0.655
F2 0.645 0.650 0.655
L 0.477 0.487 0.497
A1 0.080 0.090 0.100
N68
Note: All dimensions in inches.
Q68-01
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
Important Notice:
These data sheets are created using the chip manufacturer’s published specifications. Maxwell Technologies verifies
functionality by testing key parameters either by 100% testing, sample testing or characterization.
The specifications presented within these data sheets represent the latest and most accurate information available to
date. However, these specifications are subject to change without notice and Maxwell Technologies assumes no
responsibility for the use of this information.
Maxwell Technologies’ products are not authorized for use as critical components in life support devices or systems
without express written approval from Maxwell Technologies.
Any claim against Maxwell Technologies must be made within 90 days from the date of shipment from Maxwell Technologies. Maxwell Technologies’ liability shall be limited to replacement of defective parts.
80387DX
Memory
11. 08. 01R evA
All data sheets are subject to change without notice
©2001 Maxwell Technologies
All rights reserved.
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Math Coprocessor
)
Product Ordering Options
Model Number
80387DX
80387DX
RP
Q X
Feature
Screening Flow
Package
Option Details
Monolithic
S = Maxwell Class S
B = Maxwell Class B
E = Engineering (testing @ +25°C
I = Industrial (testing @ -55°C,
+25°C, +125°C)
Memory
Q = Quad Flat Pack
11. 08. 01R evA
Radiation Feature
Base Product
Nomenclature
All data sheets are subject to change without notice
RP = R
AD-PAK® package
Math Coprocessor
17
©2001 Maxwell Technologies
All rights reserved.
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