80386DX
32-Bit Microprocessor
21
145
22
144
62
104
63
103
Logic Diagram
Memory
F
EATURES
:
• 32-Bit microprocessor
• R
AD
-P
AK®
radiation-hardened against natural space radia-
tion
• Total dose hardness:
- >100 Krad (Si), dependent upon space mission
• Single event effect:
- SEL
TH
= 37-60 MeV/mg/cm
2
- SEU
TH
= 3.4 MeV/mg/cm
2
- SEU Cross section 1E-3 cm
2
/bit
• Package:
- 164 Pin R
AD
-P
AK®
quad flat pack
• 8, 16, 32-Bit data types
• 8 general purpose 32-Bit registers
• Hardware debugging support
• Very large address space:
- 4 gigabyte physical
- 64 terabyte Virtual
- 4 gigabyte maximum segment size
• Integrated memory management unit
- Virtual memory support
- Four levels of protection
- Fully compatible with 80C286
• Optimized for system development
- Pipelined instructions
- On-chip caches support address translation
- 32 megabytes/sec bus bandwidth
D
ESCRIPTION
:
DDC's
80386DX high performance 32-bit
microprocessor features a geater than 100 krad (Si) total dose
tolerance, dependent upon space mission. It is designed for
very high performance and multitasking operating systems.
The integrated memory management and protection architec-
ture includes address translation registers, multitasking hard-
ware and a protection mechanism to support operating
systems. The 80386DX allows simultaneous running of multi-
ple operations. In addition, the 80386DX is capable of execu-
tion at sustained rates of between 3 and 4 million instructions
per second. It offers new testability and debugging features,
including a self-test and direct access to the page translation
cache.
DDC's
patented R
AD
-P
AK®
packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
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, R
AD
-P
AK
provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
1000557
12.17.01 Rev1
All data sheets are subject to change without notice
1
(631) 567-5600 - Fax: (631) 567-7358 - www.ddc-web.com
©2001
DDC
All rights reserved.
32-Bit Microprocessor
T
ABLE
1. 80386DX P
IN
D
ESCRIPTION
P
IN
1-7, 9, 10, 12, 13, 16, 17, 20,
21, 24, 146-149, 152-154, 156-
159, 161-163
8, 18, 19, 22, 23, 25, 28-30, 33,
36, 38-40, 47, 48, 65, 66, 68,
73, 76, 77, 82, 84, 86, 88, 103,
106, 107, 114, 125, 126, 129,
130,133, 134, 145, 155, 160,
164
11, 15, 27, 32, 35, 43, 51, 53,
55, 57, 61, 70, 92, 95, 100, 111,
118, 122, 138, 142, 151
14, 26, 31, 34, 44, 50, 52, 54,
56, 58, 62, 69, 91, 96, 99, 110,
117, 137, 141, 150,
37
41
42
45
46
49
59
60
63
64
67, 71, 72, 74
78
75
79
80
81
83
85, 87, 89, 90, 93, 94, 97, 98,
102, 104, 105, 108, 109, 112,
113, 115, 116, 119, 120, 121,
123, 124, 127, 128, 131, 132,
135, 136, 139, 140, 143, 144,
101
S
YMBOL
A16-A11, A9, A10, A7, A8, A5, A6, Address Bus
A3, A4, A2, A31-A28, A27-A25,
A23-A22, A20-A18
NC
Not Connected
D
ESCRIPTION
80386DX
V
SS
Ground
V
CC
Power Supply
Memory
INTR
NMI
PEREQ
ERROR
RESET
BUSY
LOCK
W/R
M/IO
D/C
BE2, BE0, BE3, BE1
BS16
NA
HOLD
CLK2
ADS
READY
Interupt Request
Non-Maskable Interupt Request
Processor Extension Request
Error Status
Reset
Busy Status
Bus Lock
Write/ Read
Memory I/O
Data Control
Byte Enables
Bus Size 16
Next Address
Bus Hold Request
CPU Clock 2
Address Staus
Bus Ready Input
D1, D2, D4, D0, D6, D3, D8, D5, D7, Data Bus
D10, D9, D12, D11, D14, D13, D15,
D16, D18, D17, D20, D22, D19,
D24, D21, D25,D23, D27, D26, D29,
D28, D31, D30,
HLDA
Bus Hold Acknowledge
1000557
12.17.01 Rev1
All data sheets are subject to change without notice
2
©2001
DDC
All rights reserved.
32-Bit Microprocessor
T
ABLE
2. 80386DX A
BSOLUTE
M
AXIMUM
R
ATINGS
P
ARAMETER
Supply Voltage with Respect to Ground
Voltage on other pins
Thermal Impedance
Operating Temperature Range (Ambient)
Storage Temperature Range (Ambient)
S
YMBOL
V
SS
M
IN
-0.5
-0.5
--
-55
-65
80386DX
M
AX
6.5
V
CC
+0.5
1.79
125
150
U
NIT
V
V
°C/W
°C
°C
Θ
JC
T
A
T
S
T
ABLE
3. D
ELTA L
I
MITS
P
ARAMETER
I
CC
I
LI
I
LO
V
ARIATION
±10% of specified value in Table 4
±10% of specified value in Table 4
±10% of specified value in Table 4
Memory
T
ABLE
4. 80386DX R
ECOMMENDED
O
PERATING
C
ONDITIONS
P
ARAMETER
Digital Supply Voltage
Input Low Voltage
Input High Voltage
CLK2 Input Low Voltage
CLK2 Input High Voltage
Operating Temperature Range
S
YMBOL
V
CC
V
IL
V
IH
V
ILC
V
IHC
T
A
M
IN
4.75
--
2.0
--
V
CC
- 0.8
-55
M
AX
5.25
0.8
--
0.8
--
+125
U
NIT
V
V
V
V
V
°C
T
ABLE
5. 80386DX DC E
LECTRICAL
C
HARACTERISTICS
(V
CC
= +5V ±5%; T
A
= -55°C
TO
+125°C,
UNLESS OTHERWISE SPECIFIED
)
P
ARAMETER
Input Leakage Current
Output Leakage Current
Output Low Voltage
Output High Voltage
S
YMBOL
I
LI
I
LO
V
OL
V
OH
C
ONDITION
All pins except BS16, PEREQ, BUSY, and ERROR
0V < V
IN
< V
CC
0.45V < V
OUT
< V
CC
I
OL
= 4 mA: A2 - A31, D0 - D31
I
OL
= 5 mA: BE0 - BE3, W/R, D/C, M/IO, LOCK, ADS, HLDA
I
OH
= 1 mA: A2 - A31, D0 - D31
I
OH
= 0.9 mA: BE0 - BE3, W/R, D/C, M/IO, LOCK, ADS,
HLDA
M
IN
-15
-15
--
--
2.4
2.4
M
AX
+15
+15
0.45
0.45
--
--
V
U
NIT
µA
µA
V
1000557
12.17.01 Rev1
All data sheets are subject to change without notice
3
©2001
DDC
All rights reserved.
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