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. 660-6654
Mfr. Part No.TMS320F28335PGFA
HK$262.85
Each
units
Delfino LQFP Surface Mount 176 C28x 32bit 512 kB 150MHz 68 kB - 1 16 1 3.135 → 3.465 V
RS Stock No. 923-3672
Mfr. Part No.TMS320F28335PGFA
HK$192.251
Each (In a Tray of 40)
units
Delfino LQFP Surface Mount 176 C28x 32bit 512 kB 150MHz 68 kB - 1 16 1 3.135 → 3.465 V
RS Stock No. 921-2968
Mfr. Part No.TMS320F28069PNT
HK$97.04
Each (In a Tray of 119)
units
Piccolo LQFP Surface Mount 80 C28x 32bit 256 kB 90MHz 100 kB 1 1 12 2 3.3 V
RS Stock No. 819-4989
Mfr. Part No.MSP430G2513IN20
HK$23.02
Each (In a Pack of 5)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 16 kB 16MHz 512 B - - - 2 1.8 → 3.6 V
RS Stock No. 798-4475
Mfr. Part No.TMS320F28027DAT
HK$54.51
Each
units
Piccolo TSSOP Surface Mount 38 C28x 32bit 64 kB 60MHz 12 kB - 1 7 1 3.3 V
RS Stock No. 922-2375
Mfr. Part No.MSP430F5438AIPZ
HK$56.951
Each (In a Tray of 90)
units
MSP430 LQFP Surface Mount 100 MSP430 16bit 256 kB 25MHz 16 kB 1 - 16 8 1.8 → 3.6 V
RS Stock No. 818-4822
Mfr. Part No.TMS320F28027PTS
HK$59.47
Each
units
Piccolo LQFP Surface Mount 48 C28x 32bit 64 kB 60MHz 12 kB - 1 13 1 3.3 V
RS Stock No. 818-4862
Mfr. Part No.TMS320F28069PNT
HK$124.93
Each
units
Piccolo LQFP Surface Mount 80 C28x 32bit 256 kB 90MHz 100 kB 1 1 12 2 3.3 V
RS Stock No. 819-4768
Mfr. Part No.MSP430FR5725IDA
HK$25.59
Each
units
MSP430 TSSOP Surface Mount 38 MSP430 16bit - 8MHz 9 kB - - 16 3 2 → 3.6 V
RS Stock No. 145-6237
Mfr. Part No.MSP430G2332IPW14
HK$11.237
Each (In a Tube of 90)
units
MSP430 TSSOP Surface Mount 14 MSP430 16bit 4 kB 16MHz 256 B - - 8 1 1.8 → 3.6 V
RS Stock No. 145-1091
Mfr. Part No.MSP430F2001IN
HK$9.75
Each (In a Tube of 25)
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. 145-6624
Mfr. Part No.MSP430G2413IPW20
HK$14.046
Each (In a Tube of 70)
units
MSP430 TSSOP Surface Mount 20 MSP430 16bit 8 kB 16MHz 512 B - - 8 2 1.8 → 3.6 V
RS Stock No. 922-2391
Mfr. Part No.TMS320F28069PZT
HK$115.242
Each (In a Tray of 90)
units
Piccolo LQFP Surface Mount 100 C28x 32bit 128 kB 90MHz 50 kB 1 - 16 2 2.97 → 3.63 V
RS Stock No. 875-1012
Mfr. Part No.CC2650F128RGZT
HK$54.34
Each
units
SimpleLink VQFN Surface Mount 48 ARM Cortex M3 32bit 128 kB 48MHz 20 kB - 1 8 1 1.8 → 3.8 V
RS Stock No. 175-7390
Mfr. Part No.MSP430FR2522IPW16
HK$17.611
Each (In a Tube of 90)
units
MSP430 TSSOP Surface Mount 16 - 16bit 8 kB 16MHz 2 kB - - 8 2 2 → 3.6 V
RS Stock No. 819-4850
Mfr. Part No.MSP430G2233IPW20
HK$14.63
Each (In a Pack of 5)
units
MSP430 TSSOP Surface Mount 20 MSP430 16bit 2 kB 16MHz 256 B - - 8 2 1.8 → 3.6 V
RS Stock No. 817-6344
Mfr. Part No.MSP430G2153IN20
HK$15.57
Each (In a Pack of 5)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 1 kB 16MHz 256 B - - 8 2 1.8 → 3.6 V
RS Stock No. 817-6297
Mfr. Part No.MSP430F6736IPN
HK$58.27
Each
units
MSP430 LQFP Surface Mount 80 MSP430 16bit 128 kB 25MHz 8 kB - - 8 4 1.8 → 3.6 V
RS Stock No. 796-8142
Mfr. Part No.MSP430F5438AIPZ
HK$68.34
Each
units
MSP430 LQFP Surface Mount 100 MSP430 16bit 256 kB 25MHz 16 kB 1 - 16 8 1.8 → 3.6 V
RS Stock No. 162-8272
Mfr. Part No.MSP430G2402IPW14
HK$12.174
Each (In a Tube of 90)
units
MSP430 TSSOP Surface Mount 14 MSP430 16bit 4 kB 16MHz 256 B - - 8 1 1.8 → 3.6 V