National COP400
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Developer |
National Semiconductor
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Manufacturer |
National Semiconductor
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Type |
microcontrollers
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Production |
1977
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ISA |
COP400
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Word size |
4 bit 0.5 octets 1 nibbles
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Technology |
nMOS, CMOS
|
Clock |
4.098 kHz-500 kHz
|
Package |
DIP16, DIP20, DIP24, DIP28, DIP40
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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
Members
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
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DIP28 and DIP24 chips are architecturally identical; 4 IN ports are simply omitted on the smaller package.
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Dual cores
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.
Design
COP400 ISA
- Main article: COP400 ISA
Documents
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