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The '''COP400''' or '''COPS II''' or simply '''COPS''' ('''Controller Oriented Processor System II''') was a [[microprocessor family|family]] of {{arch|4}} [[microcontroller]]s developed by [[National Semiconductor]]. The family was introduced a year after the {{national|cops i|COPS I}} in 1977. Components in the COPS II were made in [[nMOS]] and [[CMOS]] technology instead of [[pMOS]] as used in COPS I. The COPS II obsoleted the COPS I family soon after release.
 
The '''COP400''' or '''COPS II''' or simply '''COPS''' ('''Controller Oriented Processor System II''') was a [[microprocessor family|family]] of {{arch|4}} [[microcontroller]]s developed by [[National Semiconductor]]. The family was introduced a year after the {{national|cops i|COPS I}} in 1977. Components in the COPS II were made in [[nMOS]] and [[CMOS]] technology instead of [[pMOS]] as used in COPS I. The COPS II obsoleted the COPS I family soon after release.
  
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In later 1981 National Semiconductor introduced a number of dual-core microcontrollers, one of the earliest instances of multiple CPUs in on single integrated circuit.
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In late 1981 National Semiconductor introduced a number of dual-core microcontrollers, one of the earliest instances of multiple CPUs in on single integrated circuit.
  
 
==2nd sources==
 
==2nd sources==

Latest revision as of 21:49, 5 February 2016

National COP400
no photo (ic).svg
Developer National Semiconductor
Manufacturer National Semiconductor
Type microcontrollers
Production 1977
ISA COP400
Word size 4 bit
0.5 octets
1 nibbles
Technology nMOS, CMOS
Clock 4.098 kHz-500 kHz
Package DIP16, DIP20, DIP24, DIP28, DIP40

The COP400 or COPS II or simply COPS (Controller Oriented Processor System II) was a family of 4-bit microcontrollers developed by National Semiconductor. The family was introduced a year after the COPS I in 1977. Components in the COPS II were made in nMOS and CMOS technology instead of pMOS as used in COPS I. The COPS II obsoleted the COPS I family soon after release.

In late 1981 National Semiconductor introduced a number of dual-core microcontrollers, one of the earliest instances of multiple CPUs in on single integrated circuit.

2nd sources[edit]

Members[edit]

Part ROM RAM Frequency Package Notes
COP310C 512 B 128 b 4.098 kHz - 62.5 kHz DIP24 CMOS, extended temperature version of 410
COP311C 512 B 128 b 4.098 kHz - 62.5 kHz DIP16 CMOS, extended temperature version of 411
COP324C 2,048 B 512 b 62.5 kHz - 250 kHz DIP28 extended temperature version of 424
COP325C 2,048 B 512 b 62.5 kHz - 250 kHz DIP24 extended temperature version of 425
COP326C 2,048 B 512 b 62.5 kHz - 250 kHz DIP20 extended temperature version of 426
COP402 256 b 250 kHz - 500 kHz DIP40 ROM-less version of COP420, for prototyping
COP402M 256 b 250 kHz - 500 kHz DIP40 ROM-less version of COP420, for prototyping, for MICROBUS
COP404L 512 b 250 kHz - 500 kHz DIP28 ROM-less version of COP444L, for prototyping
COP410L 512 B 128 b 4.098 kHz - 62.5 kHz DIP24
COP410C 512 B 128 b 4.098 kHz - 62.5 kHz DIP24 CMOS version of 410
COP411L 512 B 128 b 4.098 kHz - 62.5 kHz DIP16
COP411C 512 B 128 b 4.098 kHz - 62.5 kHz DIP16 CMOS version of 411
COP413L 512 B 128 b 4.098 kHz - 62.5 kHz DIP20
COP413C 512 B 128 b 4.098 kHz - 62.5 kHz DIP20 CMOS version of 413
COP414L 512 B 128 b 4.098 kHz - 62.5 kHz DIP20
COP420 1,024 B 256 b 250 kHz - 500 kHz DIP28
COP420L 1,024 B 256 b 62.5 kHz - 250 kHz DIP28 Low-power version
COP420C 1,024 B 256 b 4.098 kHz - 62.5 kHz DIP28 CMOS version of 420
COP421 1,024 B 256 b 250 kHz - 500 kHz DIP24 Identical to COP420, but DIP24
COP421L 1,024 B 256 b 62.5 kHz - 250 kHz DIP24 Low-power version
COP424C 2,048 B 512 b 62.5 kHz - 250 kHz DIP28 Enhanced version of COP420, obsoleted it
COP425C 2,048 B 512 b 62.5 kHz - 250 kHz DIP24
COP426C 2,048 B 512 b 62.5 kHz - 250 kHz DIP20
COP444L 2,048 B 512 b 250 kHz - 500 kHz DIP28 Identical to COP420, twice the memory (2xROM/2xRAM)
COP444C 2,048 B 512 b 250 kHz - 500 kHz DIP28 CMOS version of 444
COP445L 2,048 B 512 b 250 kHz - 500 kHz DIP24 Identical to COP444L, but DIP24
COP445C 2,048 B 512 b 250 kHz - 500 kHz DIP24 CMOS version of 445
DIP28 and DIP24 chips are architecturally identical; 4 IN ports are simply omitted on the smaller package.

Dual cores[edit]

Announced in 1981 and manufactured later that year, National introduced a number of dual-core microcontrollers. While primitive by today's standard (no notion of mutual exclusion), those chips were true dual core - perform calculations independently of each other and capable of accessing the same ROM, RAM, and I/O ports.

Part ROM RAM Frequency Package Notes
COP2340 2,048 B 640 b Identical to COP2440, extended temperature
COP2404 ROM-less version of COP2440, for prototyping
COP2440 2,048 B 640 b
COP2441
COP2442

Design[edit]

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COP400 ISA[edit]

Main article: COP400 ISA
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Documents[edit]


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Facts about "COPS II - National Semiconductor"
RDF feed
designerNational Semiconductor +
full page namenational semiconductor/cops ii +
instance ofmicrocontroller family +
instruction set architectureCOP400 +
main designerNational Semiconductor +
manufacturerNational Semiconductor +
nameNational COP400 +
packageDIP16 +, DIP20 +, DIP24 +, DIP28 + and DIP40 +
technologynMOS + and CMOS +
word size4 bit (0.5 octets, 1 nibbles) +