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. 757-4839
Mfr. Part No.C8051F580-IQ
kr 86,54
Each
Units
C8051F QFP Surface Mount 48 8051 8bit 128 kB 24MHz 8.448 kB - 4 32 1 1.8 → 5.25 V
RS Stock No. 168-9916
Mfr. Part No.C8051F580-IQ
kr 66,035
Each (In a Tray of 250)
Units
C8051F QFP Surface Mount 48 8051 8bit 128 kB 24MHz 8.448 kB - 4 32 1 1.8 → 5.25 V
RS Stock No. 198-4590
Mfr. Part No.EFM32WG290F256-B-BGA112
kr 40,903
Each (In a Tray of 168)
Units
EFM32 BGA112 Surface Mount 112 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -
RS Stock No. 198-4596
Mfr. Part No.EFM32WG332F256-B-QFP64
kr 38,034
Each (In a Tray of 160)
Units
EFM32 TQFP64 Surface Mount 64 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -
RS Stock No. 198-4591
Mfr. Part No.EFM32WG290F256-B-BGA112
kr 50,225
Each (In a Pack of 2)
Units
EFM32 BGA112 Surface Mount 112 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -
RS Stock No. 198-4597
Mfr. Part No.EFM32WG332F256-B-QFP64
kr 45,77
Each (In a Pack of 2)
Units
EFM32 TQFP64 Surface Mount 64 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -
RS Stock No. 819-6991
Mfr. Part No.C8051F34D-GQ
kr 78,49
Each
Units
C8051F LQFP Surface Mount 32 8051 8bit 64 kB 50MHz 4.352 kB 1 1 - 1 3.3 V
RS Stock No. 199-9849
Mfr. Part No.EZR32LG330F256R69G-C0
kr 54,41
Each (In a Pack of 2)
Units
EZR32LG QFN64 Surface Mount 38 ARM Cortex-M3 32bit 256 kB 1.05GHz - - - - - -
RS Stock No. 198-4608
Mfr. Part No.EFM32WG842F256-B-QFP64
kr 37,609
Each (In a Tray of 160)
Units
EFM32 TQFP64 Surface Mount 64 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -
RS Stock No. 198-4563
Mfr. Part No.EFM32LG840F256G-F-QFN64
kr 39,52
Each (In a Pack of 2)
Units
EFM32 QFN64 Surface Mount 64 ARM Cortex M3 32bit 256 kB 48MHz - - - - - -
RS Stock No. 169-0013
Mfr. Part No.C8051F413-GM
kr 47,054
Each (In a Tube of 73)
Units
C8051F QFN Surface Mount 28 8051 8bit 16 kB 50MHz 2.304 kB - 1 20 1 2.15 → 5.25 V
RS Stock No. 526-9298
Mfr. Part No.C8051F350-GQ
kr 53,75
Each
Units
C8051F LQFP Surface Mount 32 8051 8bit 8 kB 50MHz 768 B - 3 8 1 2.7 → 3.6 V
RS Stock No. 819-6907
Mfr. Part No.C8051F132-GQ
kr 119,69
Each
Units
C8051F TQFP Surface Mount 100 8051 8bit 64 kB 100MHz 8.448 kB - 1 8 1 3.3 V
RS Stock No. 198-4567
Mfr. Part No.EFM32LG880F256G-F-QFP100
kr 46,205
Each (In a Pack of 2)
Units
EFM32 LQFP100 Surface Mount 100 ARM Cortex M3 32bit 256 kB 48MHz - - - - - -
RS Stock No. 200-9663
Mfr. Part No.EFR32MG22C224F512IM40-C
kr 9 076,54
1 Tray of 490
Tray(s)
EFR32MG22 Wireless Gecko SoC QFN Surface Mount 40 - 32bit 512 kB 76.8MHz - - - - - -
RS Stock No. 198-4603
Mfr. Part No.EFM32WG395F256-B-BGA120
kr 43,346
Each (In a Tray of 260)
Units
EFM32 BGA120 Surface Mount 120 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -
RS Stock No. 198-4620
Mfr. Part No.EFM32WG942F256-B-QFP64
kr 48,05
Each
Units
EFM32 TQFP64 Surface Mount 64 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -
RS Stock No. 200-9648
Mfr. Part No.EFR32BG22C224F512IM32-C
kr 8 361,92
1 Tray of 490
Tray(s)
EFR32BG22 Wireless Gecko SoC QFN Surface Mount 32 - 32bit 512 kB 76.8MHz - - - - - -
RS Stock No. 823-1937
Mfr. Part No.C8051F805-GS
kr 7,887
Each (In a Pack of 10)
Units
C8051F SOIC Surface Mount 16 8051 8bit 16 kB 25MHz 512 B - 1 12 1 3 V
RS Stock No. 198-4594
Mfr. Part No.EFM32WG330F256-B-QFN64
kr 37,184
Each (In a Tray of 260)
Units
EFM32 QFN64 Surface Mount 64 ARM Cortex M4 32bit 256 kB 48MHz - - - - - -