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MAPS (MM570x) - National Semiconductor
< national semiconductor

Not to be confused with National MM5700 Series.
National MAPS
National Semiconductor MM5700CA D Microprocessor.jpg
MM5700CA ALU
Developer National Semiconductor
Manufacturer National Semiconductor
Type microcontrollers
Production 1971
Architecture Bin/BCD serial up to 76 bits
Word size variable
"variable" is not a number.
Technology pMOS
Package DIP16, DIP24

The National MAPS (Microprogrammable Arithmetic Processor System) or National MM570x was a family of multi-chip bit-serial microcontrollers designed by National Semiconductor. The system was made of 5 discrete chips designed to operate on variable-sized words. The system can be programmed to operate in binary or BCD up to a 76 bit one cycle data word. The chipset was marketed as a general purpose serial data microcomputer system. The chipset was introduced in late 1971 but was quickly replaced within a few short years.

Members[edit]

Family Members
Part Description
MM5700 ALU
MM5701 Register unit
MM5702 Clock and Control unit
MM5703 Control ROM (extension)
MM5704 Keyboard interface unit
MM5705 Control ROM
MM5706 Static Data Monitor

Design[edit]

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ISA[edit]

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Gallery[edit]


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designerNational Semiconductor +
full page namenational semiconductor/maps +
instance ofmicrocontroller family +
main designerNational Semiconductor +
manufacturerNational Semiconductor +
nameNational MAPS +
packageDIP16 + and DIP24 +
technologypMOS +