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. 169-7281
Mfr. Part No.MC9S12A64CFUE
BrandNXP
kr 127,317
Each (In a Tray of 84)
Units
HCS12 QFP Surface Mount 80 HSC12 16bit 64 kB 25MHz 4 kB 0 2 8 1 2.5 → 5 V
RS Stock No. 819-5409
Mfr. Part No.DSPIC30F6014A-30I/PT
BrandMicrochip
kr 75,108
Each (In a Pack of 119)
Units
dsPIC30F TQFP Surface Mount 80 PIC 16bit 144 kB 25MHz 8.192 kB 0 8 16 2 2.5 → 5.5 V
RS Stock No. 168-7397
Mfr. Part No.STM32F407IGH6
kr 93,215
Each (In a Tray of 168)
Units
STM32F UFBGA Surface Mount 176 ARM Cortex M4F 32bit 1.024 MB 168MHz 4 kB, 192 kB 1 x Device, 1 x Host, 1 x OTG 1 24 3 1.8 → 3.6 V
RS Stock No. 746-8210
Mfr. Part No.STM32F407IGH6
kr 120,04
Each
Units
STM32F UFBGA Surface Mount 176 ARM Cortex M4F 32bit 1.024 MB 168MHz 4 kB, 192 kB 1 x Device, 1 x Host, 1 x OTG 1 24 3 1.8 → 3.6 V
RS Stock No. 786-3918
Mfr. Part No.PIC18F25K50-I/SP
BrandMicrochip
kr 24,048
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. 799-5479
Mfr. Part No.PIC32MZ1024ECG100-I/PT
BrandMicrochip
kr 92,62
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. 124-1553
Mfr. Part No.PIC16F1769-I/SO
BrandMicrochip
kr 15,454
Each (In a Pack of 5)
Units
PIC16 SOIC Surface Mount 20 PIC 8bit 14 kB 16MHz 1.024 kB 0 2 12 - 2.3 → 5.5 V
RS Stock No. 379-2875
Mfr. Part No.PIC16F628-04/SO
BrandMicrochip
kr 23,23
Each
Units
PIC16F SOIC Surface Mount 18 PIC 8bit 128 x 8 words, 2048 x 14 words 4MHz 224 B 0 1 - 0 3 → 5.5 V
RS Stock No. 165-8235
Mfr. Part No.STM32L476RGT6
kr 69,391
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. 170-8964
Mfr. Part No.MKL16Z64VFM4
BrandNXP
kr 15,967
Each (In a Tray of 490)
Units
Kinetis L QFN Surface Mount 32 ARM Cortex M0+ 32bit 64 kB 48MHz 8 kB 0 1 9 2 1.71 → 3.6 V
RS Stock No. 146-0209
Mfr. Part No.PIC18F25K50-I/SP
BrandMicrochip
kr 24,047
Each (In a Tube of 15)
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 32 kB 48MHz 2.048 kB 1 2 14 1 2.3 → 5.5 V
RS Stock No. 907-4757
Mfr. Part No.STM32F072RBT6
kr 33,90
Each (In a Pack of 2)
Units
STM32 LQFP Surface Mount 64 ARM Cortex M0 32bit 64 kB, 128 kB 48MHz 16 kB 1 - 19 - 2 → 3.6 V
RS Stock No. 666-9321
Mfr. Part No.PIC18LF2620-I/SP
BrandMicrochip
kr 61,71
Each
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 1.024 kB, 64 kB 40MHz 3.986 kB 0 2 10 1 2 to 5.5 V
RS Stock No. 165-5558
Mfr. Part No.STM32F746NGH6
kr 100,964
Each (In a Tray of 160)
Units
STM32F TFBGA Surface Mount 216 ARM Cortex M7 32bit 1.024 MB 216MHz 340 kB 2 2 24 - 1.7 → 3.6 V
RS Stock No. 912-5329
Mfr. Part No.PIC16F1779-I/P
BrandMicrochip
kr 26,52
Each (In a Pack of 2)
Units
PIC16 PDIP Through Hole 40 PIC 8bit 28 kB 32MHz 2 kB 0 2 28 - 2.3 to 5.5 V
RS Stock No. 165-2224
Mfr. Part No.PIC32MZ2048ECG100-I/PT
BrandMicrochip
kr 85,643
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. 144-9132
Mfr. Part No.PIC16F628-04/SO
BrandMicrochip
kr 22,67
Each (In a Tube of 42)
Units
PIC16F SOIC Surface Mount 18 PIC 8bit 128 x 8 words, 2048 x 14 words 4MHz 224 B 0 1 - 0 3 → 5.5 V
RS Stock No. 145-9405
Mfr. Part No.PIC16F1779-I/P
BrandMicrochip
kr 26,57
Each (In a Tube of 10)
Units
PIC16 PDIP Through Hole 40 PIC 8bit 28 kB 32MHz 2 kB 0 2 28 - 2.3 → 5.5 V
RS Stock No. 144-5759
Mfr. Part No.PIC18F452-I/P
BrandMicrochip
kr 57,746
Each (In a Tube of 10)
Units
PIC18F PDIP Through Hole 40 PIC 8bit 32 kB 40MHz 1.536 kB 0 2 8 1 4.2 → 5.5 V
RS Stock No. 168-9916
Mfr. Part No.C8051F580-IQ
kr 63,519
Each (In a Tray of 250)
Units
C8051F QFP Surface Mount 48 8051 8bit 128 kB 24MHz 8.448 kB 0 4 32 1 1.8 → 5.25 V
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