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. 919-6270
Mfr. Part No.STM32F030R8T6
HK$13.586
Each (In a Tray of 160)
units
STM32F LQFP Surface Mount 64 ARM Cortex M0 32bit 64 kB 48MHz 8 kB - 1 18 2 3.6 V
RS Stock No. 761-7507
Mfr. Part No.PIC16F1509-E/SS
BrandMicrochip
HK$10.847
Each (In a Pack of 3)
units
PIC16F SSOP Surface Mount 20 PIC 8bit 8192 words 20MHz 512 B - 4 12 1 2.3 → 5.5 V
RS Stock No. 818-2567
Mfr. Part No.PIC18F25K80-E/SS
BrandMicrochip
HK$23.36
Each (In a Tube of 47)
units
PIC18F SSOP Surface Mount 28 PIC18F 8bit 32 kB 64MHz 3.648 kB - 4 8 1 1.8 → 5.5 V
RS Stock No. 399-420
Mfr. Part No.PIC16F887-I/PT
BrandMicrochip
HK$20.714
Each (In a Pack of 5)
units
PIC16F TQFP Surface Mount 44 PIC 8bit 8192 words 20MHz 368 B - 2 14 1 2 → 5.5 V
RS Stock No. 758-1455
Mfr. Part No.R5F100LFAFB#V0
HK$24.83
Each
units
RL78/G13 LQFP Surface Mount 64 RL78/G13 16bit 96 kB 32MHz 8 kB - 1 12 - 1.6 → 5.5 V
RS Stock No. 872-2492
Mfr. Part No.PIC16C711-04/P
BrandMicrochip
HK$27.575
Each (In a Tube of 25)
units
PIC16C PDIP Through Hole 18 PIC 8bit 1K x 14 words 4MHz 68 B - - 4 - 2.5 to 6 V
RS Stock No. 865-6263
Mfr. Part No.EFM8BB10F2G-A-QFN20
HK$3.348
Each (In a Pack of 30)
units
EFM8BB QFN Surface Mount 20 CIP-51 8bit 2 kB 25MHz 256 B - - 15 1 2.2 → 3.6 V
RS Stock No. 817-3698
Mfr. Part No.PIC10F220T-I/MC
BrandMicrochip
HK$4.058
Each (On a Reel of 3300)
units
PIC10F DFN Surface Mount 8 PIC10F 8bit 375 B 8MHz 16 B 1 - 2 - 2 → 5.5 V
RS Stock No. 165-8235
Mfr. Part No.STM32L476RGT6
HK$76.732
Each (In a Tray of 160)
units
STM32 LQFP Surface Mount 64 ARM Cortex M4 32bit 1 MB 80MHz 128 kB 1 x OTG 2 16 - 3.6 (Maximum) V
RS Stock No. 761-7513
Mfr. Part No.PIC16F1509-I/SS
BrandMicrochip
HK$9.867
Each (In a Pack of 3)
units
PIC16F SSOP Surface Mount 20 PIC 8bit 8192 words 20MHz 512 B - 4 12 1 2.3 → 5.5 V
RS Stock No. 920-6468
Mfr. Part No.STM32F407VGT6
HK$95.779
Each (In a Tray of 90)
units
STM32F LQFP Surface Mount 100 ARM Cortex M4F 32bit 1.024 MB 168MHz 4 kB, 192 kB 1 x Device, 1 x Host, 1 x OTG 1 16 3 1.8 → 3.6 V
RS Stock No. 889-5976
Mfr. Part No.PIC12F675-E/P
BrandMicrochip
HK$12.26
Each (In a Tube of 60)
units
PIC12F PDIP Through Hole 8 PIC 8bit 128 B, 1024 x 14 words 20MHz 64 B - - 4 - 2 → 5.5 V
RS Stock No. 917-3425
Mfr. Part No.XMC4800E196K2048AAXQMA1
BrandInfineon
HK$208.88
Each
units
XMC4000 LFBGA Surface Mount 196 ARM Cortex M4 32bit 2.048 MB 144MHz 352 kB 1 - 8 - 1.3 V, 3.3 V
RS Stock No. 159-7421
Mfr. Part No.PIC16F1509-I/SS
BrandMicrochip
HK$10.341
Each (In a Tube of 67)
units
PIC16F SSOP Surface Mount 20 PIC 8bit 8192 words 20MHz 512 B - 4 12 1 2.3 → 5.5 V
RS Stock No. 165-6628
Mfr. Part No.STM32F405VGT6V
HK$80.475
Each (In a Tray of 540)
units
STM32F LQFP Surface Mount 100 ARM Cortex M4 32bit 1.024 MB 168MHz 196 kB 2 x OTG 1 19 3 1.8 → 3.6 V
RS Stock No. 177-5038
Mfr. Part No.R5F100GDAFB
HK$14.048
Each (In a Tray of 250)
units
RL78/G13 LQFP Surface Mount 48 RL78 16bit 48 kB 32MHz 3 kB - - 10 5 1.6 → 5.5 V
RS Stock No. 660-6654
Mfr. Part No.TMS320F28335PGFA
HK$229.07
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. 177-7128
Mfr. Part No.STM8S103F2M6TR
HK$12.26
Each (In a Tray of 40)
units
STM8S SOIC Surface Mount 20 STM8 8bit 8 kB 16MHz 1 kB - 1 5 1 5.5 V
RS Stock No. 146-0436
Mfr. Part No.S9KEAZN64AMLH
BrandNXP
HK$23.418
Each (In a Tray of 160)
units
Kinetis EA LQFP Surface Mount 64 ARM Cortex M0 32bit 64 kB 40MHz 4 kB - - 16 2 2.7 → 5.5 V
RS Stock No. 177-7129
Mfr. Part No.STM32F429IGT6
HK$115.548
Each (In a Tray of 40)
units
STM32F LQFP Surface Mount 176 ARM Cortex M4 32bit 1.024 MB 168MHz 256 kB 2 2 24 3 3.6 V
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