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. 162-9724
Mfr. Part No.CC2640F128RSMT
HK$27.087
Each (On a Reel of 250)
units
CC26xx VQFN Surface Mount 32 ARM Cortex M0, ARM Cortex M3 16bit 128 kB 48MHz 20 kB - - 8 - 3.8 (Maximum) V
RS Stock No. 819-4803
Mfr. Part No.MSP430G2202IN20
HK$12.496
Each (In a Pack of 5)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 2 kB 16MHz 256 B - - - 1 1.8 3.6 V
RS Stock No. 709-2194
Mfr. Part No.MSP430F2001IPW
HK$11.152
Each (In a Pack of 5)
units
MSP430 TSSOP Surface Mount 14 MSP430 16bit 1 kB, 256 B 16MHz 128 B - 1 - 1 1.8 3.6 V
RS Stock No. 817-6354
Mfr. Part No.MSP430G2231IPW14
HK$13.338
Each (In a Pack of 5)
units
MSP430 TSSOP Surface Mount 14 MSP430 16bit 2 kB 16MHz 128 B - - 8 - 1.8 3.6 V
RS Stock No. 798-4485
Mfr. Part No.MSP430F5529IPN
HK$64.15
Each
units
MSP430 LQFP Surface Mount 80 - 16bit 128 kB 25MHz 8 + 2 kB 1 - 16 2 1.8 3.6 V
RS Stock No. 817-6234
Mfr. Part No.MSP430F5510IRGCT
HK$36.40
Each
units
MSP430 VQFN Surface Mount 64 MSP430 16bit 32 kB 25MHz 4 + 2 kB 1 - 8 4 1.8 3.6 V
RS Stock No. 162-8246
Mfr. Part No.MSP430F5510IRGZT
HK$25.41
Each (On a Reel of 250)
units
MSP430 VQFN Surface Mount 48 MSP430 16bit 32 kB 25MHz 4 + 2 kB 1 - 8 4 1.8 3.6 V
RS Stock No. 145-7817
Mfr. Part No.MSP430G2403IN20
HK$15.935
Each (In a Tube of 20)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 8 kB 16MHz 512 B - - - 1 1.8 3.6 V
RS Stock No. 818-4869
Mfr. Part No.TMS320F28062PZT
HK$99.50
Each
units
Piccolo LQFP Surface Mount 100 C28x 32bit 128 kB 90MHz 52 kB 1 1 16 2 3.3 V
RS Stock No. 162-8396
Mfr. Part No.TMS320F28027PTS
HK$41.425
Each (In a Tray of 250)
units
Piccolo LQFP Surface Mount 48 C28x 32bit 64 kB 60MHz 12 kB - 1 13 1 3.3 V
RS Stock No. 819-4920
Mfr. Part No.MSP430G2403IN20
HK$18.786
Each (In a Pack of 5)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 8 kB 16MHz 512 B - - - 1 1.8 3.6 V
RS Stock No. 817-6228
Mfr. Part No.MSP430F5507IRGZT
HK$33.97
Each
units
MSP430 VQFN Surface Mount 48 MSP430 16bit 32 kB 25MHz 4 + 2 kB 1 - 8 4 1.8 3.6 V
RS Stock No. 162-8277
Mfr. Part No.MSP430G2452IN20
HK$10.563
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. 145-7814
Mfr. Part No.MSP430F5419AIZQWT
HK$37.064
Each (On a Reel of 250)
units
MSP430 BGA Surface Mount 113 MSP430 16bit 128 kB 25MHz 16 kB - - 16 8 1.8 3.6 V
RS Stock No. 175-7626
Mfr. Part No.MSP430FR2522IPW16
HK$20.796
Each (In a Pack of 5)
units
MSP430 TSSOP Surface Mount 16 - 16bit 8 kB 16MHz 2 kB - - 8 2 2 → 3.6 V
RS Stock No. 819-4917
Mfr. Part No.MSP430G2353IN20
HK$17.522
Each (In a Pack of 5)
units
MSP430 PDIP Through Hole 20 MSP430 16bit 4 kB 16MHz 256 B - - 8 1 1.8 3.6 V
RS Stock No. 162-8397
Mfr. Part No.TMS320F28030PAGT
HK$40.082
Each (In a Tray of 160)
units
Piccolo TQFP Surface Mount 64 C28x 32bit 32 kB 60MHz 12 kB - 1 14 1 3.3 V
RS Stock No. 145-7019
Mfr. Part No.MSP430F1101AIDW
HK$19.874
Each (In a Tube of 25)
units
MSP430 SOIC Surface Mount 20 MSP430 16bit 1 kB + 128 B 8MHz 128 B - - - - 1.8 3.6 V
RS Stock No. 162-8399
Mfr. Part No.TMS320F28062PZT
HK$85.368
Each (In a Tray of 90)
units
Piccolo LQFP Surface Mount 100 C28x 32bit 128 kB 90MHz 52 kB 1 1 16 2 3.3 V
RS Stock No. 162-9876
Mfr. Part No.TMS320F28069FPFPQ
HK$161.96
Each (In a Tray of 96)
units
TMS320 MCU HTQFP Surface Mount 80 C28x 32bit 128 kB 90MHz 50 kB 1 1 12 - 3.3 V