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PDF FA80386EXTB20 Data sheet ( Hoja de datos )

Número de pieza FA80386EXTB20
Descripción Microprocessor
Fabricantes Intel 
Logotipo Intel Logotipo



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Intel386™ EX Embedded
Microprocessor
Product Features
Datasheet
s Static Intel386™ CPU Core
— Low Power Consumption
— Operating Power Supply
EXTB: 2.7 V to 3.6 V
EXTC: 4.5 V to 5.5 V
— Operating Frequency
20 MHz EXTB at 2.7 V to 3.6 V
25 MHz EXTB at 3.0 V to 3.6 V;
25/33 MHz EXTC at 4.5 V to 5.5 V
s Transparent Power-management System
Architecture
— Intel System Management Mode
Architecture Extension for Truly
Compatible Systems
— Power Management Transparent to
Operating Systems and Application
Programs
— Programmable Power-management
Modes
s Powerdown Mode
— Clock Stopping at Any Time
— Only 10–20 µA Typical CPU Sink
Current
s Full 32-bit Internal Architecture
— 8-, 16-, 32-bit Data Types
— 8 General Purpose 32-bit Registers
s Runs Intel386 Architecture Software in a
Cost-effective 16-bit Hardware
Environment
— Runs Same Applications and Operating
Systems as the Intel386 SX and Intel386
DX Processors
— Object Code Compatible with 8086,
80186, 80286, and Intel386 Processors
s High-performance 16-bit Data Bus
— Two-clock Bus Cycles
— Address Pipelining Allows Use of
Slower, Inexpensive Memories
s Extended Temperature Range
s Integrated Memory Management Unit
— Virtual Memory Support
— Optional On-chip Paging
— 4 Levels of Hardware-enforced
Protection
— MMU Fully Compatible with MMUs of
the 80286 and Intel386 DX Processors
s Virtual 8086 Mode Allows Execution of
8086 Software in a Protected and Paged
System
s Large Uniform Address Space
— 64 Megabyte Physical
— 64 Terabyte Virtual
— 4 Gigabyte Maximum Segment Size
s On-chip Debugging Support Including
Breakpoint Registers
s Complete System Development Support
s High Speed CHMOS Technology
s Two Package Types
— 132-pin Plastic Quad Flatpack
— 144-pin Thin Quad Flatpack
s Integrated Peripheral Functions
— Clock and Power Management Unit
— Chip-select Unit
— Interrupt Control Unit
— Timer/Counter Unit
— Watchdog Timer Unit
— Asynchronous Serial I/O Unit
— Synchronous Serial I/O Unit
— Parallel I/O Unit
— DMA and Bus Arbiter Unit
— Refresh Control Unit
— JTAG-compliant Test-logic Unit
This datasheet applies to devices marked EXTB and EXTC. If you require information about
devices marked EXSA or EXTA, refer to a previous revision of this datasheet, order number
272420-004.
Order Number: 272420-007
October 1998
Free Datasheet http://www.datasheet4u.com/

1 page




FA80386EXTB20 pdf
Intel386™ EX Embedded Microprocessor
Revision History
This datasheet applies to devices marked EXTB and EXTC. If you require information about
devices marked EXSA or EXTA, refer to a previous revision of this datasheet, order number
272420-004.
Revision
007
006
005
004
Date
10/98
5/96
12/95
9/94
Description
The document was updated to the larger page size. All known device errata for
the datasheet have been incorporated into this new revision.
Corrections added.
This datasheet applied to the new EXTB and EXTC devices.
This datasheet applied to devices marked EXSA or EXTA.
Datasheet
5
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5 Page





FA80386EXTB20 arduino
Intel386™ EX Embedded Microprocessor
Table 2. 144-Pin TQFP Pin Assignment
Pin Symbol
1 UCS#
2 CS6#/REFRESH#
3 VSS
4 LBA#
5 D0
6 D1
7 D2
8 D3
9 VCC
10 D4
11 VSS
12 D5
13 D6
14 D7
15 D8
16 VCC
17 D9
18 VSS
19 D10
20 D11
21 D12
22 D13
23 D14
24 VSS
25 D15
26 TDO
27 TDI
28 TMS
29 M/IO#
30 VCC
31 D/C#
32 W/R#
33 VSS
34 READY#
35 BS8#
36 VSS
Pin Symbol
37 RD#
38 WR#
39 VSS
40 BLE#
41 VCC
42 BHE#
43 ADS#
44 NA#
45 A1
46 A2
47 VSS
48 A3
49 A4
50 VSS
51 VCC
52 A5
53 A6
54 A7
55 A8
56 A9
57 A10
58 A11
59 A12
60 VSS
61 A13
62 A14
63 A15
64 A16/CAS0
65 VCC
66 A17/CAS1
67 A18/CAS2
68 A19
69 VSS
70 A20
71 A21
72 VSS
Pin Symbol
73 A22
74 A23
75 VSS
76 A24
77 VCC
78 A25
79 SMI#
80 P3.0/TMROUT0/INT9
81 P3.1/TMROUT1/INT8
82 TCK
83 VSS
84 DTR1#/SRXCLK
85 RI1#/SSIORX
86 RTS1#/SSIOTX
87 P3.2/INT0
88 VCC
89 P3.3/INT1
90 VSS
91 P3.4/INT2
92 P3.5/INT3
93 P3.6/PWRDOWN
94 P3.7/COMCLK
95 VCC
96 PEREQ/TMRCLK2
97 VSS
98 NMI
99 ERROR#/TMROUT2
100 BUSY#/TMRGATE2
101 INT4/TMRCLK0
102 INT5/TMRGATE0
103 INT6/TMRCLK1
104 INT7/TMRGATE1
105 VSS
106 DSR1#/STXCLK
107 FLT#
108 VSS
Pin
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
Symbol
VSS
P1.0/DCD0#
P1.1/RTS0#
CLKOUT
P1.2/DTR0#
P1.3/DSR0#
P1.4/RI0#
P1.5/LOCK#
P1.6/HOLD
VCC
RESET
VSS
P1.7/HLDA
DACK1#/TXD1
EOP#/CTS1#
WDTOUT
CLK2
VSS
DRQ0/DCD1#
DRQ1/RXD1
TRST#
SMIACT#
VCC
VSS
P2.0/CS0#
P2.1/CS1#
P2.2/CS2#
P2.3/CS3#
P2.4/CS4#
VCC
DACK0#/CS5#
P2.5/RXD0
VSS
P2.6/TXD0
P2.7/CTS0#
VSS
Datasheet
11
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