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

...
Read more Read less

Filters

Viewing 1 - 20 of 8851 products
Results per page
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
R 54.831
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. 145-8756
Mfr. Part No.STM32F070CBT6
R 26.174
Each (In a Tray of 250)
units
STM32 LQFP Surface Mount 48 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 1 - 13 - 2.4 → 3.6 V
RS stock no. 110-6133
Mfr. Part No.STM32F070CBT6
R 46.446
Each (In a Pack of 5)
units
STM32 LQFP Surface Mount 48 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 1 - 13 - 2.4 → 3.6 V
RS stock no. 165-1949
Mfr. Part No.PIC16F1847-I/SO
BrandMicrochip
R 21.424
Each (In a Tube of 42)
units
- - - - - - - - 1.024 kB - - - - -
RS stock no. 798-5292
Mfr. Part No.PIC16F1847-I/SO
BrandMicrochip
R 30.592
Each (In a Pack of 5)
units
PIC16F SOIC Surface Mount 18 PIC 8bit 8 kB 32MHz 1.024 kB 1 - 12 2 2.5 → 5.5 V
RS stock no. 877-2857
Mfr. Part No.ST72F321AR9T6
R 70.105
Each (In a Pack of 2)
units
ST7 LQFP Surface Mount 64 ST7 8bit 60 kB 8MHz 2.048 kB - 1 16 1 3.8 → 5.5 V
RS stock no. 145-9705
Mfr. Part No.ST72F321AR9T6
R 65.379
Each (In a Tray of 160)
units
ST7 LQFP Surface Mount 64 ST7 8bit 60 kB 8MHz 2.048 kB - 1 16 1 3.8 → 5.5 V
RS stock no. 165-2032
Mfr. Part No.PIC12F1571-I/SN
BrandMicrochip
R 7.21
Each (In a Tube of 100)
units
PIC12F SOIC Surface Mount 8 PIC 8bit 1 kwords 16MHz 128 B 1 3 4 - 5.5 V
RS stock no. 814-3076
Mfr. Part No.PIC12F1571-I/SN
BrandMicrochip
R 9.367
Each (In a Pack of 10)
units
PIC12F SOIC Surface Mount 8 PIC 8bit 1 kwords 16MHz 128 B 1 3 4 - 5.5 V
RS stock no. 860-7508
Mfr. Part No.STM32F030K6T6TR
R 21.362
Each (In a Pack of 5)
units
STM32F LQFP Surface Mount 32 ARM Cortex M0 32bit 32 kB 48MHz 4 kB - 1 12 1 2.4 → 3.6 V
RS stock no. 165-5858
Mfr. Part No.STM32F030K6T6
R 14.182
Each (In a Tray of 250)
units
STM32F LQFP Surface Mount 32 ARM Cortex 32bit 32 kB 48MHz 4 kB - - 12 1 2.4 → 3.6 V
RS stock no. 829-4644
Mfr. Part No.STM32F030K6T6
R 25.142
Each (In a Pack of 10)
units
STM32F LQFP Surface Mount 32 ARM Cortex 32bit 32 kB 48MHz 4 kB - - 12 1 2.4 → 3.6 V
RS stock no. 165-5557
Mfr. Part No.STM32F030K6T6TR
R 9.867
Each (On a Reel of 2400)
units
STM32F LQFP Surface Mount 32 ARM Cortex 32bit 32 kB 48MHz 4 kB - - 12 1 2.4 → 3.6 V
RS stock no. 144-5888
Mfr. Part No.PIC16F1619-I/P
BrandMicrochip
R 22.229
Each (In a Tube of 22)
units
PIC16LF PDIP Through Hole 20 8 bit CPU 8bit 14 kB 32MHz 1.024 kB - 2 12 - 2.3 → 5.5 V
RS stock no. 905-3151
Mfr. Part No.PIC16F1619-I/P
BrandMicrochip
R 35.42
Each (In a Pack of 5)
units
PIC16LF PDIP Through Hole 20 8 bit CPU 8bit 14 kB 32MHz 1.024 kB - 2 12 - 2.3 → 5.5 V
RS stock no. 715-4479
Mfr. Part No.PIC18F26K22-I/SP
BrandMicrochip
R 62.33
Each
units
PIC18F SPDIP Through Hole 28 PIC 8bit 64 kB 64MHz 1.024 kB, 3.896 kB - 5 17 2 5.5 V
RS stock no. 887-7252
Mfr. Part No.PIC18F26K22-I/SP
BrandMicrochip
R 41.853
Each (In a Tube of 15)
units
PIC18F SPDIP Through Hole 28 PIC 8bit 64 kB 64MHz 1.024 kB, 3.896 kB - 5 17 2 5.5 V
RS stock no. 124-1562
Mfr. Part No.PIC32MM0064GPL028-I/SS
BrandMicrochip
R 24.126
Each (In a Pack of 5)
units
PIC32 SSOP Surface Mount 28 PIC 32bit 64 kB 25MHz 8 kB - - 12 - 2 → 3.6 V
RS stock no. 146-3267
Mfr. Part No.PIC32MM0064GPL028-I/SS
BrandMicrochip
R 19.449
Each (In a Tube of 47)
units
PIC32 SSOP Surface Mount 28 MicroAptiv UC 32 bit 32bit 64 kB 25MHz 8 kB - 1 12 2 2 → 3.6 V
RS stock no. 887-7139
Mfr. Part No.PIC16F877A-I/P
BrandMicrochip
R 76.082
Each (In a Tube of 10)
units
PIC16F PDIP Through Hole 40 PIC 8bit 14.3 kB, 256 B 20MHz 368 B - 2 8 1 4 → 5.5 V