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. 921-4545
Mfr. Part No.ATMEGA328P-PU
BrandMicrochip
kr 28,404
Each (In a Tube of 14)
Units
ATmega PDIP Through Hole 28 AVR 8bit 1 kB, 32 kB 20MHz 2 kB - 3 6 1 1.8 → 5.5 V
RS Stock No. 165-3455
Mfr. Part No.PIC18F27J53-I/SP
BrandMicrochip
kr 34,809
Each (In a Tube of 15)
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 128 kB 48MHz 3.8 kB - 10 10 2 2.15 → 3.6 V
RS Stock No. 703-7661
Mfr. Part No.PIC18F27J53-I/SP
BrandMicrochip
kr 36,09
Each
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 128 kB 48MHz 3.8 kB - 10 10 2 2.15 to 3.6 V
RS Stock No. 165-4194
Mfr. Part No.PIC32MZ0512EFE064-I/PT
BrandMicrochip
kr 70,664
Each (In a Tray of 160)
Units
PIC32MZ EF TQFP Surface Mount 64 - 32bit 512 kB 200MHz 128 kB - - 24 - 2.1 → 3.6 V
RS Stock No. 165-4308
Mfr. Part No.PIC32MZ2048EFH064-I/PT
BrandMicrochip
kr 96,569
Each (In a Tray of 160)
Units
PIC32 TQFP Surface Mount 64 MIPS® MicroAptiv™ 32bit 2.048 (Flash) MB, 160 (Boot Flash) kB 200MHz 512 kB 3 1 24 4 3.3 V
RS Stock No. 165-4310
Mfr. Part No.PIC32MZ1024EFG064-I/PT
BrandMicrochip
kr 84,542
Each (In a Tray of 160)
Units
PIC32 TQFP Surface Mount 64 MIPS® MicroAptiv™ 32bit 160 (Boot Flash) kB, 1024 (Flash) kB 200MHz 512 kB 3 1 24 4 3.3 V
RS Stock No. 916-3740
Mfr. Part No.PIC16F1615-I/SL
BrandMicrochip
kr 10,308
Each (In a Pack of 5)
Units
PIC16F SOIC Surface Mount 14 PIC 8bit 14 kB 32MHz 1.024 kB - 1 8 - 2.3 → 5.5 V
RS Stock No. 145-9162
Mfr. Part No.PIC16F1615-I/SL
BrandMicrochip
kr 9,125
Each (In a Tube of 57)
Units
PIC16F SOIC Surface Mount 14 PIC 8bit 14 kB 32MHz 1.024 kB - 1 8 - 2.3 → 5.5 V
RS Stock No. 916-3765
Mfr. Part No.PIC32MZ0512EFE064-I/PT
BrandMicrochip
kr 73,18
Each
Units
PIC32MZ EF TQFP Surface Mount 64 - 32bit 512 kB 200MHz 128 kB - - 24 - 2.1 → 3.6 V
RS Stock No. 905-5210
Mfr. Part No.PIC32MZ1024EFG064-I/PT
BrandMicrochip
kr 87,54
Each
Units
PIC32 TQFP Surface Mount 64 MIPS® MicroAptiv™ 32bit 160 (Boot Flash) kB, 1024 (Flash) kB 200MHz 512 kB 3 1 24 4 3.3 V
RS Stock No. 905-5163
Mfr. Part No.PIC32MZ2048EFH064-I/PT
BrandMicrochip
kr 99,90
Each
Units
PIC32 TQFP Surface Mount 64 MIPS® MicroAptiv™ 32bit 2.048 (Flash) MB, 160 (Boot Flash) kB 200MHz 512 kB 3 1 24 4 3.3 V
RS Stock No. 145-9405
Mfr. Part No.PIC16F1779-I/P
BrandMicrochip
kr 15,987
Each (In a Tube of 10)
Units
PIC16 PDIP Through Hole 40 PIC 8bit 28 kB 32MHz 2 kB - 2 28 - 2.3 → 5.5 V
RS Stock No. 379-2875
Mfr. Part No.PIC16F628-04/SO
BrandMicrochip
kr 23,93
Each
Units
PIC16F SOIC Surface Mount 18 PIC 8bit 128 x 8 words, 2048 x 14 words 4MHz 224 B - 1 - - 3 → 5.5 V
RS Stock No. 666-9321
Mfr. Part No.PIC18LF2620-I/SP
BrandMicrochip
kr 63,11
Each
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 1.024 kB, 64 kB 40MHz 3.986 kB - 2 10 1 2 to 5.5 V
RS Stock No. 786-3918
Mfr. Part No.PIC18F25K50-I/SP
BrandMicrochip
kr 24,746
Each (In a Pack of 5)
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 32 kB 48MHz 2.048 kB 1 2 14 1 2.3 to 5.5 V
RS Stock No. 912-2780
Mfr. Part No.PIC32MZ1024ECG100-I/PT
BrandMicrochip
kr 91,365
Each (In a Tray of 119)
Units
PIC32MZ TQFP Surface Mount 100 PIC 32bit 1.024 MB 200MHz 512 kB 1 - 40 6 2.2 → 3.6 V
RS Stock No. 165-2224
Mfr. Part No.PIC32MZ2048ECG100-I/PT
BrandMicrochip
kr 101,774
Each (In a Tray of 119)
Units
PIC32MZ TQFP Surface Mount 100 PIC 32bit 2.048 MB 200MHz 512 kB 1 - 40 6 2.2 → 3.6 V
RS Stock No. 467-2126
Mfr. Part No.PIC18F452-I/P
BrandMicrochip
kr 62,31
Each
Units
PIC18F PDIP Through Hole 40 PIC 8bit 32 kB 40MHz 1.536 kB - 2 8 1 4.2 → 5.5 V
RS Stock No. 799-5479
Mfr. Part No.PIC32MZ1024ECG100-I/PT
BrandMicrochip
kr 94,62
Each
Units
PIC32MZ TQFP Surface Mount 100 PIC 32bit 1.024 MB 200MHz 512 kB 1 - 40 6 2.2 → 3.6 V
RS Stock No. 912-5329
Mfr. Part No.PIC16F1779-I/P
BrandMicrochip
kr 17,04
Each (In a Pack of 2)
Units
PIC16 PDIP Through Hole 40 PIC 8bit 28 kB 32MHz 2 kB - 2 28 - 2.3 to 5.5 V