CG80C286-12 반도체 회로 부품 판매점
High Performance Microprocessor with Memory Management and Protection
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 Intersil Corporation |
80C286/883
March 1997
High Performance Microprocessor with Memory
Management and Protection
Features
Description
• This Circuit is Processed in Accordance to MIL-STD-
883 and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
• Compatible with NMOS 80286/883
• Static CMOS Design for Low Power Operation
- ICCSB = 5mA Maximum
- ICCOP = 185mA Maximum (80C286-10/883)
- ICCOP = 220mA Maximum (80C286-12/883)
• Large Address Space
- 16 Megabytes Physical
- 1 Gigabyte Virtual per Task
• Integrated Memory Management, Four-Level Memory
Protection and Support for Virtual Memory and
Operating Systems
• Two 80C86 Upward Compatible Operating Modes
- 80C286/883 Real Address Mode
- Protected Virtual Address Mode
• Compatible with 80287 Numeric Data Co-Processor
The Intersil 80C286/883 is a static CMOS version of the
NMOS 80286 microprocessor. The 80C286/883 is an
advanced, high-performance microprocessor with specially
optimized capabilities for multiple user and multi-tasking sys-
tems. The 80C286/883 has built-in memory protection that
supports operating system and task isolation as well as pro-
gram and data privacy within tasks. The 80C286/883
includes memory management capabilities that map 230
(one gigabyte) of virtual address space per task into 224
bytes (16 megabytes) of physical memory.
The 80C286/883 is upwardly compatible with 80C86 and
80C88 software (the 80C286/883 instruction set is a super-
set of the 80C86/80C88 instruction set). Using the 80C286/
883 real address mode, the 80C286/883 is object code com-
patible with existing 80C86 and 80C88 software. In protected
virtual address mode, the 80C286/883 is source code com-
patible with 80C86 and 80C88 software but may require
upgrading to use virtual address as supported by the
80C286/883’s integrated memory management and protec-
tion mechanism. Both modes operate at full 80C286/883
performance and execute a superset of the 80C86 and
80C88 instructions.
The 80C286/883 provides special operations to support the
efficient implementation and execution of operating systems.
For example, one instruction can end execution of one task,
save its state, switch to a new task, load its state, and start
execution of the new task. The segment-not-present excep-
tion and restartable instructions.
Ordering Information
PACKAGE TEMP. RANGE
10MHz
12.5MHz
16MHz
68 Pin PGA 0oC to +70oC
-
CG80C286-12
CG80C286-16
-40oC to +85oC IG80C286-10
IG80C286-12
-
-55oC to +125oC MG80C286-10/883 MG80C286-12/883
-
5962-9067801MXC 5962-9067802MXC
-
20MHz
CG80C286-20
-
-
-
25MHz
-
-
-
-
PKG. NO.
G68.B
G68.B
G68.B
G68.B
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
3-128
File Number 2948.1
80C286/883
Pinout
68 LEAD PGA, COMPONENT PAD VIEW
As viewed from underside of the component when mounted on the board.
A0 D0
A2 A1
VCC
CLK
A3 RESET
A5 A4
A7 A6
A9 A8
A11 A10
A13 A12
35 37 39 41 43 45 47 49 51
34 36 38 40 42 44 46 48 50 53 52
32 33
55 54
30 31
57 56
28 29
59 58
26 27
61 60
24 25
63 62
22 23
65 64
20 21
67 66
18 19 16 14 12 10 8 6 4 2 68
17 15 13 11 9 7 5 3 1
ERROR
NC
INTR
NMI
PEREQ
READY
HLDA
M / IO
NC
NC
BUSY
NC
NC
VSS
VCC
HOLD
COD / INTA
LOCK
PIN 1 INDICATOR
As viewed from the component side of the P.C. board.
P.C. BOARD VIEW
NC ERROR
BUSY
NC
NC INTR
NC NMI
VSS PEREQ
VCC READY
HOLD HLDA
COD / INTA
M / IO
LOCK
NC
51 49 47 45 43 41 39 37 35
52 53 50 48 46 44 42 40 38 36 34
54 55
33 32
56 57
31 30
58 59
29 28
60 61
27 26
62 63
25 24
64 65
23 22
66 67
21 20
68 2 4 6 8 10 12 14 16 19 18
1 3 5 7 9 11 13 15 17
D0 A0
A1 A2
CLK
VCC
RESET A3
A4 A5
A6 A7
A8 A9
A10 A11
A12 A13
PIN 1 INDICATOR
3-129
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