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 81 - 100 of 8508 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. 623-0724
Mfr. Part No.PIC18F2550-I/SP
BrandMicrochip
£4.41
Each
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 32 kB, 256 B 48MHz 2.048 kB 1 x Device 2 10 1 4.2 to 5.5 V
RS Stock No. 144-5743
Mfr. Part No.PIC16F84A-04/P
BrandMicrochip
£2.98
Each (In a Tube of 25)
Units
PIC16F PDIP Through Hole 18 PIC 8bit 1024 x 14 words, 64 x 14 words 4MHz 68 B 0 - - 0 4 → 5.5 V
RS Stock No. 746-8223
Mfr. Part No.STM32F407VET6
£7.04
Each
Units
STM32F LQFP Surface Mount 100 ARM Cortex M4F 32bit 512 kB 168MHz 4 kB, 192 kB 1 x Device, 1 x Host, 1 x OTG 1 16 3 1.8 → 3.6 V
RS Stock No. 169-7157
Mfr. Part No.MK20DX256VLH7
BrandNXP
£4.90
Each (In a Tray of 160)
Units
Kinetis K2x LQFP Surface Mount 64 ARM Cortex M4 - 288 kB 72MHz 66 kB 1 1 2 1 1.71 → 3.6 V
RS Stock No. 786-2120
Mfr. Part No.MK20DX256VLH7
BrandNXP
£6.57
Each
Units
Kinetis K2x LQFP Surface Mount 64 ARM Cortex M4 - 288 kB 72MHz 66 kB 1 1 2 1 1.71 → 3.6 V
RS Stock No. 920-6487
Mfr. Part No.STM32F407VET6
£6.056
Each (In a Tray of 90)
Units
STM32F LQFP Surface Mount 100 ARM Cortex M4F 32bit 512 kB 168MHz 4 kB, 192 kB 1 x Device, 1 x Host, 1 x OTG 1 16 3 1.8 → 3.6 V
RS Stock No. 865-6263
Mfr. Part No.EFM8BB10F2G-A-QFN20
£0.294
Each (In a Pack of 30)
Units
EFM8BB QFN Surface Mount 20 CIP-51 8bit 2 kB 25MHz 256 B 0 - 15 1 2.2 → 3.6 V
RS Stock No. 103-8049
Mfr. Part No.LPC1768FBD100,551
BrandNXP
£6.364
Each (In a Tube of 90)
Units
LPC17 LQFP Surface Mount 100 ARM Cortex M3 32bit 512 kB 100MHz 64 kB 1 x Device, 1 x Host, 1 x OTG 2 8 3 3.3 V
RS Stock No. 169-0180
Mfr. Part No.EFM8BB10F2G-A-QFN20
£0.267
Each (In a Tube of 120)
Units
EFM8BB QFN Surface Mount 20 CIP-51 8bit 2 kB 25MHz 256 B 0 - 15 1 2.2 → 3.6 V
RS Stock No. 725-7733
Mfr. Part No.LPC1768FBD100,551
BrandNXP
£8.69
Each
Units
LPC17 LQFP Surface Mount 100 ARM Cortex M3 32bit 512 kB 100MHz 64 kB 1 x Device, 1 x Host, 1 x OTG 2 8 3 3.3 V
RS Stock No. 896-7692
Mfr. Part No.STM32L476RGT6
£8.02
Each
Units
STM32 LQFP Surface Mount 64 ARM Cortex M4 32bit 1 MB 80MHz 128 kB 1 x OTG 2 16 - 3.6 (Maximum) V
RS Stock No. 703-7822
Mfr. Part No.PIC16F1823-I/P
BrandMicrochip
£0.96
Each
Units
PIC16F PDIP Through Hole 14 PIC 8bit 256 B, 2K x 14 words 32MHz 128 B 0 1 8 1 1.8 to 5.5 V
RS Stock No. 889-5834
Mfr. Part No.PIC18F45K22-I/P
BrandMicrochip
£2.188
Each (In a Tube of 10)
Units
PIC18F PDIP Through Hole 40 PIC 8bit 32.768 kB, 256 B 16MHz 1.536 kB 0 5 30 2 2.3 to 5.5 V
RS Stock No. 912-6855
Mfr. Part No.PIC16F1823-I/P
BrandMicrochip
£0.88
Each (In a Tube of 30)
Units
PIC16F PDIP Through Hole 14 PIC 8bit 2K x 14 words, 256 B 32MHz 128 B 0 1 8 1 1.8 to 5.5 V
RS Stock No. 703-7740
Mfr. Part No.PIC18F45K22-I/P
BrandMicrochip
£2.19
Each
Units
PIC18F PDIP Through Hole 40 PIC 8bit 32.768 kB, 256 B 16MHz 1.536 kB 0 5 30 2 2.3 to 5.5 V
RS Stock No. 165-8235
Mfr. Part No.STM32L476RGT6
£6.00
Each (In a Tray of 160)
Units
STM32 LQFP Surface Mount 64 ARM Cortex M4 32bit 1 MB 80MHz 128 kB 1 x OTG 2 16 - 3.6 (Maximum) V
RS Stock No. 165-4637
Mfr. Part No.PIC16F877A-I/PT
BrandMicrochip
£4.703
Each (In a Tray of 160)
Units
PIC16F TQFP Surface Mount 44 PIC 8bit 14.3 kB, 256 B 20MHz 368 B 0 2 8 1 4 → 5.5 V
RS Stock No. 467-1707
Mfr. Part No.PIC16F877A-I/PT
BrandMicrochip
£4.93
Each
Units
PIC16F TQFP Surface Mount 44 PIC 8bit 14.3 kB, 256 B 20MHz 368 B 0 2 8 1 4 → 5.5 V
RS Stock No. 467-1628
Mfr. Part No.PIC16F876A-I/SP
BrandMicrochip
£3.92
Each
Units
PIC16F SPDIP Through Hole 28 PIC 8bit 14.3 kB, 256 B 20MHz 368 B 0 2 5 1 4 → 5.5 V
RS Stock No. 144-5754
Mfr. Part No.PIC16F876A-I/SP
BrandMicrochip
£3.755
Each (In a Tube of 15)
Units
PIC16F SPDIP Through Hole 28 PIC 8bit 14.3 kB, 256 B 20MHz 368 B 0 2 5 1 4 → 5.5 V
Related Products
High-performance 32-bit microcontrollers designed for: High Impact Graphics/User ...
Description:
High-performance 32-bit microcontrollers designed for: High Impact Graphics/User Interfaces, Ethernet/USB/CAN Connectivity, Multitasking Embedded Control, High Performance Audio.
The Microchip PIC24FJxxx GA/GB406/410/412 family of Microcontrollers are ...
Description:
The Microchip PIC24FJxxx GA/GB406/410/412 family of Microcontrollers are peripheral rich 16-bit devices suitable for applications that require secure data transfer and storage. Highlights include an on-board Cryptographic Engine, e Xtreme Low Power (XLP) features, an LCD Display Controller and USB On-The-Go.Of particular note is the Dual Partition Flash with Live ...
A member of the Microchip SAM9XE series of ...
Description:
A member of the Microchip SAM9XE series of microcontrollers based on the high-performance 32-bit ARM926EJ processor. It operates at a maximum speed of 160MHz and features 512KB of flash and 16KB of SRAM.  CKGRSelectable 32768Hz Low-power Oscillator or Internal Low Power RC Oscillator on Battery Backup Power Supply, Providing ...
20 MHz Max. CPU Speed33 Instructions2 Level Hardware ...
Description:
20 MHz Max. CPU Speed33 Instructions2 Level Hardware Stack12 I/O Pins – PIC16F5420 I/O Pins – PIC16F5732 I/O Pins – PIC16F59Power-On Reset (POR)Watchdog Timer (WDT)Device Reset Timer (DRT)In-Circuit Serial Programming (ICSP).