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. 102-3545
Mfr. Part No.STM32F103C8T6
MYR17.618
Each (In a Tray of 250)
units
STM32F LQFP Surface Mount 48 ARM Cortex M3 32bit 64 kB 72MHz 20 kB 1 x Device 1 10 2 2 → 3.6 V
RS Stock No. 402-279
Mfr. Part No.STM32F103C8T6
MYR25.24
Each
units
STM32F LQFP Surface Mount 48 ARM Cortex M3 32bit 64 kB 72MHz 20 kB 1 x Device 1 10 2 2 → 3.6 V
RS Stock No. 919-6260
Mfr. Part No.STM32F030F4P6
MYR5.601
Each (In a Tube of 74)
units
STM32F TSSOP Surface Mount 20 ARM Cortex M0 32bit 16 kB 48MHz 4 kB - 1 11 1 3.6 V
RS Stock No. 829-7151
Mfr. Part No.STM32F030F4P6TR
MYR4.862
Each (In a Pack of 10)
units
STM32F TSSOP Surface Mount 20 ARM Cortex M0 32bit 16 kB 48MHz 4 kB - - 11 1 2.4 → 3.6 V
RS Stock No. 168-8744
Mfr. Part No.STM32F030F4P6TR
MYR2.449
Each (On a Reel of 2500)
units
STM32F TSSOP Surface Mount 20 ARM Cortex M0 32bit 16 kB 48MHz 4 kB - - 11 1 2.4 → 3.6 V
RS Stock No. 792-5925
Mfr. Part No.STM32F030F4P6
MYR5.901
Each (In a Pack of 10)
units
STM32F TSSOP Surface Mount 20 ARM Cortex M0 32bit 16 kB 48MHz 4 kB - 1 11 1 3.6 V
RS Stock No. 165-5858
Mfr. Part No.STM32F030K6T6
MYR4.515
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. 165-5557
Mfr. Part No.STM32F030K6T6TR
MYR3.045
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. 829-4644
Mfr. Part No.STM32F030K6T6
MYR5.87
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. 860-7508
Mfr. Part No.STM32F030K6T6TR
MYR6.878
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. 724-9710
Mfr. Part No.STM32F107RCT6
MYR37.37
Each
units
STM32F LQFP Surface Mount 64 ARM Cortex M3 32bit 256 kB 72MHz 64 kB 1 x OTG 1 16 3 2 → 3.6 V
RS Stock No. 165-7464
Mfr. Part No.STM32F107RCT6
MYR27.57
Each (In a Tray of 160)
units
STM32F LQFP Surface Mount 64 ARM Cortex M3 32bit 256 kB 72MHz 64 kB 1 x OTG 1 16 3 2 → 3.6 V
RS Stock No. 145-9607
Mfr. Part No.STM32F103RCT6
MYR20.759
Each (In a Tray of 160)
units
STM32F LQFP Surface Mount 64 ARM Cortex M3 32bit 256 kB 72MHz 48 kB 1 x Device 2 16 3 2 → 3.6 V
RS Stock No. 714-1079
Mfr. Part No.STM32F103RCT6
MYR27.72
Each
units
STM32F LQFP Surface Mount 64 ARM Cortex M3 32bit 256 kB 72MHz 48 kB 1 x Device 2 16 3 2 → 3.6 V
RS Stock No. 686-8596
Mfr. Part No.STM32F103ZET6
MYR49.72
Each
units
STM32F LQFP Surface Mount 144 ARM Cortex M3 32bit 512 kB 72MHz 64 kB 1 x Device 2 21 3 2 → 3.6 V
RS Stock No. 168-5798
Mfr. Part No.STM32F101C8T6
MYR12.348
Each (In a Tray of 250)
units
STM32F LQFP Surface Mount 48 ARM Cortex M3 32bit 64 kB 36MHz 10 kB - 3 10 2 2 → 3.6 V
RS Stock No. 166-0971
Mfr. Part No.STM32F769BIT6
MYR53.897
Each (In a Tray of 360)
units
STM32 LQFP Surface Mount 208 ARM Cortex M7 32bit 2.048 MB 216MHz 512 kB 2 - 24 - 1.7 → 3.6 V
RS Stock No. 795-7593
Mfr. Part No.STM32F207ZCT6
MYR46.11
Each
units
STM32F LQFP Surface Mount 144 ARM Cortex M3 32bit 256 kB 120MHz 128 kB 2 2 24 3 3.6 V
RS Stock No. 920-6468
Mfr. Part No.STM32F407VGT6
MYR44.471
Each (In a Tray of 90)
units
STM32F LQFP Surface Mount 100 ARM Cortex M4F 32bit 1.024 MB 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. 111-6472
Mfr. Part No.STM32F769NIH6
MYR66.70
Each
units
STM32 TFBGA Surface Mount 216 ARM Cortex M7 32bit 2.048 MB 216MHz 512 kB 2 - 24 - 1.7 → 3.6 V