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. 917-0707
Mfr. Part No.FT51AL-T
BrandBridgetek
£2.48
Each (In a Pack of 2)
Units
FT51A LQFP Surface Mount 44 8051 8bit 16 kB 48MHz 8 kB 2 - - - 1.8 V, 2.5 V, 3.3 V, 5 V
RS Stock No. 177-5922
Mfr. Part No.FT900Q-T
BrandBridgetek
£4.469
Each (In a Tray of 152)
Units
Embedded Microcontroller QFN Surface Mount 100 FT32 32bit 256 kB 100MHz 64 kB, 256 kB 1 x Host, 1 x Peripheral Controller 1 7 - 3.3 V
RS Stock No. 901-5004
Mfr. Part No.FT900Q-T
BrandBridgetek
£5.16
Each
Units
Embedded Microcontroller QFN Surface Mount 100 FT32 32bit 256 kB 100MHz 64 kB, 256 kB 1 x Host, 1 x Peripheral Controller 1 7 - 3.3 V
RS Stock No. 917-0710
Mfr. Part No.FT51CS-U
BrandBridgetek
£1.83
Each (In a Pack of 2)
Units
FT51A SSOP Surface Mount 28 8051 8bit 16 kB 48MHz 8 kB 2 - - - 1.8 V, 2.5 V, 3.3 V, 5 V
RS Stock No. 177-5924
Mfr. Part No.FT901Q-T
BrandBridgetek
£4.508
Each (In a Tray of 152)
Units
Embedded Microcontroller QFN Surface Mount 100 FT32 32bit 256 kB 100MHz 64 kB, 256 kB 1 x Host, 1 x Peripheral Controller 1 7 - 3.3 V
RS Stock No. 901-5017
Mfr. Part No.FT901Q-T
BrandBridgetek
£5.12
Each
Units
Embedded Microcontroller QFN Surface Mount 100 FT32 32bit 256 kB 100MHz 64 kB, 256 kB 1 x Host, 1 x Peripheral Controller 1 7 - 3.3 V
RS Stock No. 181-4799
Mfr. Part No.FT908Q-C-T
BrandBridgetek
£3.758
Each (In a Tray of 260)
Units
FT90 QFN Surface Mount 76 FT32 32bit 256 kB 100MHz 256 kB 1 1 5 2 3.3 V
RS Stock No. 901-5039
Mfr. Part No.FT905Q-T
BrandBridgetek
£3.24
Each
Units
Embedded Microcontroller QFN Surface Mount 76 FT32 32bit 256 kB 100MHz 64 kB, 256 kB 1 x Host, 1 x Peripheral Controller 1 4 - 3.3 V
RS Stock No. 181-4994
Mfr. Part No.FT908Q-C-T
BrandBridgetek
£4.17
Each (In a Pack of 2)
Units
FT90 QFN Surface Mount 76 FT32 32bit 256 kB 100MHz 256 kB 1 1 5 2 3.3 V
RS Stock No. 181-4983
Mfr. Part No.FT907Q-C-T
BrandBridgetek
£4.45
Each (In a Pack of 2)
Units
FT90 QFN Surface Mount 76 FT32 32bit 256 kB 100MHz 256 kB 1 1 5 2 3.3 V
RS Stock No. 181-4783
Mfr. Part No.FT900Q-C-T
BrandBridgetek
£4.655
Each (In a Tray of 152)
Units
FT90 QFN Surface Mount 100 FT32 32bit 256 kB 100MHz 256 kB 1 1 8 3 3.3 V
RS Stock No. 181-4977
Mfr. Part No.FT901L-C-T
BrandBridgetek
£4.75
Each (In a Pack of 2)
Units
FT90 LQFP Surface Mount 100 FT32 32bit 256 kB 100MHz 256 kB 1 1 8 3 3.3 V
RS Stock No. 181-4797
Mfr. Part No.FT907Q-C-T
BrandBridgetek
£4.018
Each (In a Tray of 260)
Units
FT90 QFN Surface Mount 76 FT32 32bit 256 kB 100MHz 256 kB 1 1 5 2 3.3 V
RS Stock No. 181-4987
Mfr. Part No.FT902Q-C-T
BrandBridgetek
£4.98
Each (In a Pack of 2)
Units
FT90 QFN Surface Mount 100 FT32 32bit 256 kB 100MHz 256 kB 1 1 8 3 3.3 V
RS Stock No. 181-4975
Mfr. Part No.FT906Q-C-T
BrandBridgetek
£4.345
Each (In a Pack of 2)
Units
FT90 QFN Surface Mount 76 FT32 32bit 256 kB 100MHz 256 kB 1 1 5 2 3.3 V
RS Stock No. 901-5020
Mfr. Part No.FT905L-T
BrandBridgetek
£4.32
Each
Units
Embedded Microcontroller LQFP Surface Mount 80 FT32 32bit 256 kB 100MHz 64 kB, 256 kB 1 x Host, 1 x Peripheral Controller 1 4 - 3.3 V
RS Stock No. 176-9101
Mfr. Part No.FT930Q-T
BrandBridgetek
£3.409
Each (In a Tray of 348)
Units
FT93 QFN Surface Mount 68 - 32bit 128 kB 100MHz 32 kB 1 1 3 1 3.3 V
RS Stock No. 181-4788
Mfr. Part No.FT902Q-C-T
BrandBridgetek
£4.494
Each (In a Tray of 152)
Units
FT90 QFN Surface Mount 100 FT32 32bit 256 kB 100MHz 256 kB 1 1 8 3 3.3 V
RS Stock No. 181-4990
Mfr. Part No.FT908L-C-T
BrandBridgetek
£4.17
Each (In a Pack of 2)
Units
FT90 LQFP Surface Mount 80 FT32 32bit 256 kB 100MHz 256 kB 1 1 5 2 3.3 V
RS Stock No. 181-4784
Mfr. Part No.FT901L-C-T
BrandBridgetek
£4.283
Each (In a Tray of 90)
Units
FT90 LQFP Surface Mount 100 FT32 32bit 256 kB 100MHz 256 kB 1 1 8 3 3.3 V