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. 817-6411
Mfr. Part No.MSP430G2553IN20
PHP151.778
Each (In a Pack of 5)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 16 kB 16MHz 512 B - - 8 2 1.8 → 3.6 V
RS Stock No. 121-9714
Mfr. Part No.MSP430G2553IN20
PHP136.857
Each (In a Tube of 20)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 16 kB 16MHz 512 B - - 8 2 1.8 → 3.6 V
RS Stock No. 662-5107
Mfr. Part No.MSP430F2618TPM
PHP663.71
Each
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 116 kB, 256 B 16MHz 8 kB - 2 8 4 1.8 → 3.6 V
RS Stock No. 709-4166
Mfr. Part No.TMS320F28335ZJZA
PHP1,380.45
Each
units
TMS320 PBGA Surface Mount 176 C28x 32bit 512 kB 150MHz 68 kB - 1 16 1 3.135 → 3.465 V
RS Stock No. 922-2763
Mfr. Part No.MSP430F2618TPM
PHP515.529
Each (In a Tray of 160)
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 116 kB, 256 B 16MHz 8 kB - 2 8 4 1.8 → 3.6 V
RS Stock No. 619-5794
Mfr. Part No.MSP430F169IPM
PHP792.33
Each
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 60 kB, 256 B 8MHz 2 kB - 2 8 2 1.8 → 3.6 V
RS Stock No. 162-8277
Mfr. Part No.MSP430G2452IN20
PHP75.20
Each (In a Tube of 20)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 8 kB 16MHz 256 B - - 8 2 1.8 → 3.6 V
RS Stock No. 133-0149
Mfr. Part No.CC1310F128RGZT
PHP356.55
Each
units
CC13xx VQFN Surface Mount 48 ARM Cortex M3 16bit 128 kB 48MHz 20 kB - - 8 - 1.8 → 3.8 V
RS Stock No. 921-5289
Mfr. Part No.MSP430AFE253IPW
PHP196.77
Each (In a Bag of 60)
units
MSP430 TSSOP Surface Mount 24 - 16bit 16 kB 12MHz 512 B - - 3 1 1.8 → 3.6 V
RS Stock No. 121-9710
Mfr. Part No.MSP430F427AIPM
PHP193.788
Each (In a Tray of 160)
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 32 kB 8MHz 1 kB - - 3 - 1.8 → 3.6 V
RS Stock No. 168-4935
Mfr. Part No.CC1310F128RGZT
PHP215.521
Each (On a Reel of 250)
units
CC13xx VQFN Surface Mount 48 ARM Cortex M3 16bit 128 kB 48MHz 20 kB - - 8 - 1.8 → 3.8 V
RS Stock No. 817-6120
Mfr. Part No.MSP430F427AIPM
PHP328.77
Each
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 32 kB 8MHz 1 kB - - 3 - 1.8 → 3.6 V
RS Stock No. 739-8020
Mfr. Part No.MSP430AFE253IPW
PHP300.77
Each
units
MSP430 TSSOP Surface Mount 24 - 16bit 16 kB 12MHz 512 B - - 3 1 1.8 → 3.6 V
RS Stock No. 102-5579
Mfr. Part No.MSP430F169IPM
PHP639.374
Each (In a Tube of 160)
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 60 kB, 256 B 8MHz 2 kB - 2 8 2 1.8 → 3.6 V
RS Stock No. 436-3024
Mfr. Part No.MSP430F149IPM
PHP642.32
Each
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 60 kB, 256 B 8MHz 2 kB - 2 8 2 1.8 → 3.6 V
RS Stock No. 817-6225
Mfr. Part No.MSP430F5510IPT
PHP254.60
Each
units
MSP430 LQFP Surface Mount 48 MSP430 16bit 32 kB 25MHz 4 + 2 kB 1 - 8 4 1.8 → 3.6 V
RS Stock No. 923-6860
Mfr. Part No.MSP430F248TPM
PHP280.88
Each (In a Tray of 160)
units
MSP430 LQFP Surface Mount 64 MSP430 16bit 48 kB, 256 B 16MHz 4 kB - 2 8 4 1.8 → 3.6 V
RS Stock No. 709-2835
Mfr. Part No.MSP430F2001IN
PHP75.118
Each (In a Pack of 5)
units
MSP430 PDIP Through Hole 14 MSP430 16bit 1 kB, 256 B 16MHz 128 B - 1 - 1 1.8 → 3.6 V
RS Stock No. 709-2368
Mfr. Part No.MSP430F2013IN
PHP161.04
Each
units
MSP430 PDIP Through Hole 14 MSP430 16bit 2 kB, 256 B 16MHz 128 B - 1 4 1 1.8 → 3.6 V
RS Stock No. 162-8232
Mfr. Part No.MSP430F5308IPT
PHP122.33
Each (On a Reel of 250)
units
MSP430 LQFP Surface Mount 48 MSP430 16bit 16 kB 25MHz 6 kB - - 12 4 1.8 → 3.6 V