Microcontrollers

Microcontrollers, also referred to as MCUs (microcontroller units), are embedded semiconductor devices used in circuit board design. They are essentially a computer within an integrated circuit (IC). Microcontrollers are mostly used in single-function embedded applications, unlike microprocessors which are designed for general-purpose work in Personal Computers, Tablets and Smartphones. Microcontrollers are limited in their clock speed compared to microprocessors by the relative slowness of their non-volatile Flash program memory.

What are they made up of?

Microcontrollers contain single or multiple processors (sometimes referred to as CPUs), plus memory and I/O peripherals. These peripherals include timers, ADCs (analogue-to-digital converters) and DACs (digital-to-analogue converters).

What does 8-bit mean?

Microcontrollers have a data bus width which describes the amount of data the MCU can process at a time. For example, an 8-bit microcontroller can process 8 bits at one time. Popular data bus widths include 8-bit, 16-bit and 32-bit MCUs.

What packages are there?

MCUs come in standard chip packages with various pin counts. Package types include:

  • LQFP
  • PDIP
  • QFN
  • SOIC
  • SSOP
  • TQFP
  • TSSOP

What are ARM processor cores?

Microcontrollers often contain an ARM microprocessor core. ARM represents an architecture developed by ARM Holdings, which is used by other companies to manufacture microprocessors and other devices such as System-on-Chip (SoCs).

  • Cortex-M0
  • Cortex-M0+
  • Cortex-M1
  • Cortex-M3
  • Cortex-M4
  • Cortex-M7
  • Cortex-M23
  • Cortex-M33
  • Cortex-M35P

Where are microcontrollers used?

  • Computers
  • Automotive
  • Robotics
  • Automation
  • Medical equipment
  • Home appliances

...
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Description Price Family Name Package Type Mounting Type Pin Count Device Core Data Bus Width Program Memory Size Maximum Frequency RAM Size USB Channels Number of PWM Units ADC Channels Number of SPI Channels Typical Operating Supply Voltage
RS Stock No. 625-9084
Mfr. Part No.Z84C2006PEG
BrandZilog
MYR21.31
Each
units
Z80 PDIP Through Hole 40 Z80 8bit - 6.17MHz - 0 - - 0 4.5 → 5.5 V
RS Stock No. 169-8230
Mfr. Part No.Z84C2006PEG
BrandZilog
MYR21.92
Each (In a Tube of 10)
units
Z80 PDIP Through Hole 40 Z80 8bit - 6.17MHz - 0 - - 0 4.5 → 5.5 V
RS Stock No. 625-9488
Mfr. Part No.Z8F0822SJ020SG
BrandZilog
MYR13.99
Each
units
Z8 Encore! XP SOIC Surface Mount 28 Z8 8bit 8 kB 20MHz 1 kB 0 1 5 1 2.7 → 3.6 V
RS Stock No. 660-0805
Mfr. Part No.Z8F0822SJ020EG
BrandZilog
MYR15.54
Each
units
Z8 Encore! XP SOIC Surface Mount 28 Z8 8bit 8 kB 20MHz 1 kB 0 1 5 1 2.7 → 3.6 V
RS Stock No. 169-8235
Mfr. Part No.Z8F0822SJ020SG
BrandZilog
MYR11.86
Each (In a Tube of 27)
units
Z8 Encore! XP SOIC Surface Mount 28 Z8 8bit 8 kB 20MHz 1 kB 0 1 5 1 2.7 → 3.6 V
RS Stock No. 169-8332
Mfr. Part No.Z8F0822SJ020EG
BrandZilog
MYR13.13
Each (In a Tube of 27)
units
Z8 Encore! XP SOIC Surface Mount 28 Z8 8bit 8 kB 20MHz 1 kB 0 1 5 1 2.7 → 3.6 V
RS Stock No. 169-8227
Mfr. Part No.Z84C2008PEG
BrandZilog
MYR21.92
Each (In a Tube of 10)
units
Z8 PDIP Through Hole 40 Z8 8bit - 8MHz - 0 - - 0 4.5 → 5.5 V
RS Stock No. 625-9309
Mfr. Part No.Z8F6423FT020SG
BrandZilog
MYR26.59
Each
units
Z8 Encore! XP PQFP Surface Mount 80 Z8 8bit 64 kB 20MHz 4 kB 0 1 12 1 3 → 3.6 V
RS Stock No. 625-9090
Mfr. Part No.Z84C3006PEG
BrandZilog
MYR21.92
Each
units
Z80 PDIP Through Hole 28 Z8 8bit - 6.17MHz - 0 - - 0 4.5 → 5.5 V
RS Stock No. 165-9032
Mfr. Part No.Z86E3016PSG
BrandZilog
MYR26.26
Each (In a Tube of 15)
units
Z8 PDIP Through Hole 28 Z8 8bit 4 kB 16MHz 237 B 0 - - 0 3.5 → 5.5 V
RS Stock No. 169-8228
Mfr. Part No.Z84C3008PEG
BrandZilog
MYR21.92
Each (In a Tube of 15)
units
Z80 PDIP Through Hole 28 Z8 8bit - 8MHz - 0 - - 0 4.5 → 5.5 V
RS Stock No. 625-8996
Mfr. Part No.Z84C3008PEG
BrandZilog
MYR21.31
Each
units
Z80 PDIP Through Hole 28 Z8 8bit - 8MHz - 0 - - 0 4.5 → 5.5 V
RS Stock No. 169-8335
Mfr. Part No.Z8F6421AN020SG
BrandZilog
MYR18.98
Each (In a Tube of 160)
units
Z8 Encore! XP LQFP Surface Mount 44 Z8 8bit 64 kB 20MHz 4 kB 0 1 8 1 3 → 3.6 V
RS Stock No. 169-8331
Mfr. Part No.Z86E0412PSG1866
BrandZilog
MYR11.33
Each (In a Tube of 20)
units
Z8 PDIP Through Hole 18 Z8 8bit 1 kB 12MHz 125 B 0 - - 0 4.5 → 5.5 V
RS Stock No. 625-8952
Mfr. Part No.Z84C2008PEG
BrandZilog
MYR21.92
Each
units
Z8 PDIP Through Hole 40 Z8 8bit - 8MHz - 0 - - 0 5 V
RS Stock No. 165-9326
Mfr. Part No.Z8F6423FT020SG
BrandZilog
MYR21.80
Each (In a Tube of 66)
units
Z8 Encore! XP PQFP Surface Mount 80 Z8 8bit 64 kB 20MHz 4 kB 0 1 12 1 3 → 3.6 V
RS Stock No. 165-8942
Mfr. Part No.Z84C4008PEG
BrandZilog
MYR36.71
Each (In a Tube of 10)
units
Z80 PDIP Through Hole 40 Z8 8bit - 8MHz - 0 - - 1 4.5 → 5.5 V
RS Stock No. 660-0785
Mfr. Part No.Z86E3016PSG
BrandZilog
MYR26.26
Each
units
Z8 PDIP Through Hole 28 Z8 8bit 4 kB 16MHz 237 B 0 - - 0 3.5 → 5.5 V
RS Stock No. 625-9078
Mfr. Part No.Z84C0010PEG
BrandZilog
MYR21.92
Each
units
Z80 PDIP Through Hole 40 Z80 8bit - 10MHz - 0 - - 0 4.5 → 5.5 V
RS Stock No. 625-8520
Mfr. Part No.Z86E0812PSG1866
BrandZilog
MYR11.78
Each
units
Z8 PDIP Through Hole 18 Z8 8bit 2 kB 12MHz 125 B 0 - - 0 4.5 → 5.5 V