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. 175-9110
Mfr. Part No.ATSAML11E14A-MU
R 21.93
Each (In a Tray of 490)
units
SAML11 VQFN Surface Mount 32 - 32bit 16 kB 32MHz 4 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9117
Mfr. Part No.ATSAML10D16A-MU
R 21.93
Each (In a Tray of 490)
units
SAML10 VQFN Surface Mount 24 - 32bit 64 kB 32MHz 16 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9426
Mfr. Part No.ATSAML10E15A-MU
R 31.05
Each (In a Pack of 5)
units
SAML10 VQFN Surface Mount 32 - 32bit 32 kB 32MHz 8 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9115
Mfr. Part No.ATSAML10E15A-MU
R 20.575
Each (In a Tray of 490)
units
SAML10 VQFN Surface Mount 32 - 32bit 32 kB 32MHz 8 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9118
Mfr. Part No.ATSAML10D15A-YU
R 23.99
Each (In a Tube of 59)
units
SAML10 SSOP Surface Mount 24 - 32bit 32 kB 32MHz 8 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9400
Mfr. Part No.ATSAML10D15A-YU
R 28.296
Each (In a Pack of 5)
units
SAML10 SSOP Surface Mount 24 - 32bit 32 kB 32MHz 8 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9396
Mfr. Part No.ATSAML10D16A-MU
R 32.894
Each (In a Pack of 5)
units
SAML10 VQFN Surface Mount 24 - 32bit 64 kB 32MHz 16 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9109
Mfr. Part No.ATSAML11E15A-MU
R 22.898
Each (In a Tray of 490)
units
SAML11 VQFN Surface Mount 32 - 32bit 32 kB 32MHz 8 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9112
Mfr. Part No.ATSAML11D15A-YU
R 26.50
Each (In a Tube of 59)
units
SAML11 SSOP Surface Mount 24 - 32bit 32 kB 32MHz 8 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9114
Mfr. Part No.ATSAML10E16A-AU
R 27.595
Each (In a Tray of 250)
units
SAML10 TQFP Surface Mount 32 - 32bit 64 kB 32MHz 16 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9415
Mfr. Part No.ATSAML11D16A-MU
R 35.716
Each (In a Pack of 5)
units
SAML11 VQFN Surface Mount 24 - 32bit 64 kB 32MHz 16 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9116
Mfr. Part No.ATSAML10E14A-MU
R 19.607
Each (In a Tray of 490)
units
SAML10 VQFN Surface Mount 32 - 32bit 16 kB 32MHz 4 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9411
Mfr. Part No.ATSAML11E14A-MU
R 32.894
Each (In a Pack of 5)
units
SAML11 VQFN Surface Mount 32 - 32bit 16 kB 32MHz 4 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9419
Mfr. Part No.ATSAML11D15A-YU
R 31.118
Each (In a Pack of 5)
units
SAML11 SSOP Surface Mount 24 - 32bit 32 kB 32MHz 8 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9430
Mfr. Part No.ATSAML10E14A-MU
R 29.844
Each (In a Pack of 5)
units
SAML10 VQFN Surface Mount 32 - 32bit 16 kB 32MHz 4 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9108
Mfr. Part No.ATSAML11E16A-AU
R 29.918
Each (In a Tray of 250)
units
SAML11 TQFP Surface Mount 32 - 32bit 64 kB 32MHz 16 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9111
Mfr. Part No.ATSAML11D16A-MU
R 24.254
Each (In a Tray of 490)
units
SAML11 VQFN Surface Mount 24 - 32bit 64 kB 32MHz 16 kB - - 5 2 1.62 → 3.63 V
RS stock no. 175-9422
Mfr. Part No.ATSAML10E16A-AU
R 39.82
Each (In a Pack of 5)
units
SAML10 TQFP Surface Mount 32 - 32bit 64 kB 32MHz 16 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9404
Mfr. Part No.ATSAML11E16A-AU
R 42.83
Each (In a Pack of 5)
units
SAML11 TQFP Surface Mount 32 - 32bit 64 kB 32MHz 16 kB - - 10 3 1.62 → 3.63 V
RS stock no. 175-9408
Mfr. Part No.ATSAML11E15A-MU
R 34.098
Each (In a Pack of 5)
units
SAML11 VQFN Surface Mount 32 - 32bit 32 kB 32MHz 8 kB - - 10 3 1.62 → 3.63 V