The 8-bit architecture is a microprocessor or computer architecture that has a datapath width or a highest operand width of 8 bits or an octet. These architectures typically have a matching register file with registers width of 8 bits.

Applications

As a departure from the older 4-bit microprocessors, 8-bit CPUs found their way to many military applications, scientific instrumentation, complex control and processing systems. 8-bit microcontrollers have been used in just about every electrical consumer product.

8-bit microcontrollers still make up the largest group by revenue - accounting for close to 40% of the microcontroller market total revenue in 2015.

8-bit microprocessors

• AMD Am9080
• DEC LSI-11
• Fairchild F8
• GI Series 8000
• Hitachi 6309
• Intel 8008
• Intel 8080
• Intel 8085
• Mostek 5065
• Mostek 6100
• Mostek 6500
• Motorola 6800
• Motorola 6809
• National IMP-8
• National NSC800
• National SC/MP
• National SC/MP II
• NEC V20
• NEC V40
• RCA 1802
• RCA EPIC
• Rockwell PPS8
• Scientific Microsystems SMS300
• Signetics 2650
• Signetics 8X300
• TI TMX1795
• WD MCP-1600
• Zilog Z80
• Zilog Z180
• Bell Labs BELLMAC-8

8-bit microcontrollers

• GI PIC
• Intel 2920
• Intel 8048
• Intel 8051
• Intel 8751H
• Intel 8751H-8
• Microchip PIC16
• Mitsubishi M37409
• Mitsubishi M58850
• Mostek 3870
• Motorola 6805
• NEC μCOM-8
• NEC μCOM-80
• NEC μPD7800
• NEC μPD78K2
• RCA 1804
• Rockwell 6500
• Philips 7C522
• National COP820

8-bit many-core microprocessors

• Rapport
  • Kilocore