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. 165-6778
Mfr. Part No.STM32F405RGT6V
kr 86,518
Each (In a Tray of 160)
Units
STM32F LQFP Surface Mount 64 ARM Cortex M4 32bit 1.024 MB 168MHz 192 + 4 kB 1 x OTG 1 16 3 1.8 → 3.6 V
RS Stock No. 810-7673
Mfr. Part No.STM32F405RGT6V
kr 111,36
Each
Units
STM32F LQFP Surface Mount 64 ARM Cortex M4 32bit 1.024 MB 168MHz 192 + 4 kB 1 x OTG 1 16 3 1.8 → 3.6 V
RS Stock No. 110-6621
Mfr. Part No.STM32F446RET6
kr 75,57
Each
Units
STM32 LQFP Surface Mount 64 ARM Cortex M4 32bit 512 kB 180MHz 128 kB 2 - 16 - 1.8 → 3.6 V
RS Stock No. 166-1153
Mfr. Part No.STM32F446RET6
kr 56,64
Each (In a Tray of 160)
Units
STM32 LQFP Surface Mount 64 ARM Cortex M4 32bit 512 kB 180MHz 128 kB 2 - 16 - 1.8 → 3.6 V
RS Stock No. 772-4867
Mfr. Part No.STM32F373CCT6
kr 50,65
Each
Units
STM32F LQFP Surface Mount 48 ARM Cortex M4F 32bit 256 kB 72MHz 32 kB 1 11 16, 21 3 2 → 3.6 V
RS Stock No. 920-6446
Mfr. Part No.STM32F373CCT6
kr 35,36
Each (In a Tray of 250)
Units
STM32F LQFP Surface Mount 48 ARM Cortex M4F 32bit 256 kB 72MHz 32 kB 1 11 16, 21 3 2 → 3.6 V
RS Stock No. 165-8169
Mfr. Part No.STM32F469NIH6
kr 112,313
Each (In a Tray of 160)
Units
STM32 BGA Surface Mount 216 ARM Cortex M4 32bit 2.048 MB 180MHz 384 + 4 kB 2 - 24 - 1.7 → 3.6 V
RS Stock No. 917-3400
Mfr. Part No.STM32F469NIH6
kr 144,76
Each
Units
STM32 BGA Surface Mount 216 ARM Cortex M4 32bit 2.048 MB 180MHz 384 + 4 kB 2 - 24 - 1.7 → 3.6 V
RS Stock No. 919-6302
Mfr. Part No.STM32F405RGT6TR
kr 63,411
Each (On a Reel of 1000)
Units
STM32F LQFP Surface Mount 64 ARM Cortex M4 32bit 1.024 MB 168MHz 192 kB 2 2 16 3 3.6 V
RS Stock No. 168-7330
Mfr. Part No.STM32F100RBT6B
kr 30,739
Each (In a Tray of 160)
Units
STM32F LQFP Surface Mount 64 ARM Cortex M3 32bit 128 kB 24MHz 8 kB - 7 16 2 2 → 3.6 V
RS Stock No. 723-8873
Mfr. Part No.STM32F100C8T6B
kr 30,41
Each
Units
STM32F LQFP Surface Mount 48 ARM Cortex M3 32bit 64 kB 24MHz 8 kB - 7 10 2 2 → 3.6 V
RS Stock No. 746-8217
Mfr. Part No.STM32F405RGT6
kr 93,12
Each
Units
STM32F LQFP Surface Mount 64 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. 792-6013
Mfr. Part No.STM32F405RGT6TR
kr 99,90
Each
Units
STM32F LQFP Surface Mount 64 ARM Cortex M4 32bit 1.024 MB 168MHz 192 kB 2 2 16 3 3.6 V
RS Stock No. 920-6468
Mfr. Part No.STM32F407VGT6
kr 98,878
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. 723-8895
Mfr. Part No.STM32F100RBT6B
kr 41,67
Each
Units
STM32F LQFP Surface Mount 64 ARM Cortex M3 32bit 128 kB 24MHz 8 kB - 7 16 2 2 → 3.6 V
RS Stock No. 920-6456
Mfr. Part No.STM32F405RGT6
kr 72,332
Each (In a Tray of 160)
Units
STM32F LQFP Surface Mount 64 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. 168-7326
Mfr. Part No.STM32F100C8T6B
kr 21,236
Each (In a Tray of 250)
Units
STM32F LQFP Surface Mount 48 ARM Cortex M3 32bit 64 kB 24MHz 8 kB - 7 10 2 2 → 3.6 V
RS Stock No. 746-8226
Mfr. Part No.STM32F407VGT6
kr 112,16
Each
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. 882-0287
Mfr. Part No.STM32F746NGH6
kr 150,25
Each
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. 746-8210
Mfr. Part No.STM32F407IGH6
kr 118,44
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