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Intel 80286
  Intel R80286-6
  Intel R80286-8
  Intel SAB 80286-8R
  Intel R80286-10
  Intel R80286-12
  Intel N80286-8
  Intel N80286-10
  Intel N80286-12
  Intel CG80286-6 C
  Intel CG80286-8 C
  Intel A80286-8
  Intel A80286-10
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The Intel 80286 Processor
The 80286 was introduced by Intel on February 1, 1982. As the 80186/80188 CPUs were not really significant to personal computing, the 80286 was Intel's next step processor for micro computers.
 
Intel added four more address lines to the 8086/80186 design. The 8086, 8088, 80186, and 80188 all contained 20 address lines, giving these processors one megabyte of addressibility (2^20 = 1MB). The 80286, with its 24 address lines, gives 16 megabytes of addressibility (2^24 = 16 MB).
 
The most substantial difference between the 80286 and the 8086/8088 is the addition of a protected mode. In protected mode, segment registers became pointers into a table of memory descriptors rather than being a direct part of the address. Among other things, protected mode allows safe execution of multiple programs at once by protecting each program in memory. DOS normally operates in real mode, in which segment registers act just as they do in the 8086/8088. Protected mode is used by Microsoft Windows, IBM's OS/2 and UNIX. (For an introduction to protected mode please refer to this source)
 
The 80286 is a much more powerful CPU than the 8086, offering 3-6 times the performance of it. The 6 MHz 80286 is the CPU of the IBM AT (Advanced Technology), which also introduced a 16-bit motherboard and 16-bit expansion bus to the PC world. The IBM AT was introduced in 1985 - three years after introduction of the 80286.
 
With the 80286, the first "chipsets" were introduced. The computer chipset is a set of chips that replaced dozens of other peripheral chips while maintaining identical functionality. Chips and Technologies became one of the first popular chipset companies.
 
The 80286 was typically made in 3 package versions, each with 68 contacts: a PGA-, CLCC- and a PLCC-package.
Intel R80286-6
Intel R80286-6 Top Side
R80286-6
S40172
L6050584
(c)INTEL '84
Intel R80286-6 Back Side
MALAY
8522 AX
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Core Frequency:6 MHz
Board Frequency:6 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 22/1985
Package Type:Ceramic
LCC-68
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Intel R80286-8
Intel R80286-8 Top Side
R80286-8
SX123
(m)(c)'82 '85
L8280941
Intel R80286-8 Back Side
37200010AB
MALAY
CS 25
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 28/1988
Made in:Malaysia
Package Type:Ceramic
LCC-68
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Intel SAB 80286-8R
Intel SAB 80286-8R Top Side
SAB80286-8R
L1502429C
S50071
(M)(C)'82'85
Intel SAB 80286-8R Back Side
61211141AA
MALAY
BAF 139
An Intel 286 with Siemens SAB marking...
 
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 50/1991
Package Type:Ceramic
LCC-68
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Intel R80286-10
Intel R80286-10 Top Side
R80286-10
L7240346
(m) (c)i '82 '85
Intel R80286-10 Back Side
8714102MAB
MALAY
CT 23
Donated by SOFTWERK. Thanks a lot!  
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 24/1987
Package Type:Ceramic
LCC-68
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Intel R80286-12
Intel R80286-12 Top Side
R80286-12
L9310598
(m)(c) '82 '85
Intel R80286-12 Back Side
69232052AD
MALAY
JC 930
Donated by Jörg Baumann. Thanks a lot!  
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Core Frequency:12 MHz
Board Frequency:12 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 31/1989
Made in:Malaysia
Package Type:Ceramic
LCC-68
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Intel N80286-8
Intel N80286-8 Top Side
N80286-8
L7200594
(m)(c)i '82
Intel N80286-8 Back Side
DA
8714
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 20/1987
Package Type:Plastic
PLCC-68
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Intel N80286-10
Intel N80286-10 Top Side
N80286-10
L0232813
(m)(c) '82 '85
Intel N80286-10 Back Side
56053661
AC 0E20
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 23/1990
Package Type:Plastic
PLCC-68
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Intel N80286-12
Intel N80286-12 Top Side
N80286-12
L9400602
(m) (c) '82 '85
Intel N80286-12 Back Side
69332191
AA 0E39
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Core Frequency:12 MHz
Board Frequency:12 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 40/1989
Package Type:Plastic
PLCC-68
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Intel CG80286-6 C
Intel CG80286-6 C Top Side
CG80286-6 C
S54036
L5230188
(c)INTEL '84
Intel CG80286-6 C Back Side
MALAY C
8519 AX
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Core Frequency:6 MHz
Board Frequency:6 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 23/1985
Made in:Malaysia
Package Type:Ceramic
PGA-68
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Intel CG80286-8 C
Intel CG80286-8 C Top Side
CG80286-8 C
S54046
L515004D
(c)INTEL '84
Intel CG80286-8 C Back Side
MALAY C
8513 AX
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 15/1985
Made in:Malaysia
Package Type:Ceramic
PGA-68
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Intel A80286-8
Intel A80286-8 Top Side
A80286-8
L7100387
(m)(c)i '82
Intel A80286-8 Back Side
66502042AB
MALAY 8709
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 10/1987
Made in:Malaysia
Package Type:Ceramic
PGA-68
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Intel A80286-10
Intel A80286-10 Top Side
A80286-10
L8170281
(m)(c)i '82 '85
Intel A80286-10 Back Side
68067082AC
MALAY
CV 814
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50 µ
Voltage:5 V
Introduced:02/1982
Manufactured:week 17/1988
Made in:Malaysia
Package Type:Ceramic
PGA-68
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