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. 623-0847
Mfr. Part No.PIC18F4620-I/P
BrandMicrochip
HK$58.11
Each
units
PIC18F PDIP Through Hole 40 PIC 8bit 1.024 kB, 64 kB 40MHz 3.986 kB - 2 13 1 4.2 to 5.5 V
RS Stock No. 876-6786
Mfr. Part No.PIC16F716-I/P
BrandMicrochip
HK$10.943
Each (In a Tube of 25)
units
PIC16F PDIP Through Hole 18 PIC 8bit 3.5 kB 20MHz 128 B - 1 4 - 2 to 5.5 V
RS Stock No. 165-2172
Mfr. Part No.PIC18F67J94-I/PT
BrandMicrochip
HK$28.94
Each (In a Tray of 160)
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PIC18F TQFP Surface Mount 64 PIC 8bit 128 kB 64MHz 4 kB - 7 16 2 2 3.6 V
RS Stock No. 526-8986
Mfr. Part No.C8051F020-GQ
HK$160.91
Each
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C8051F TQFP Surface Mount 100 8051 8bit 64 kB 25MHz 4.352 kB - 5 8 1 2.7 3.6 V
RS Stock No. 165-4782
Mfr. Part No.PIC16C711-20I/P
BrandMicrochip
HK$30.84
Each (In a Tube of 25)
units
PIC16C PDIP Through Hole 18 PIC 8bit 1K x 14 words 20MHz 68 B - - 4 - 2.5 6 V
RS Stock No. 178-4890
Mfr. Part No.PIC16F1947-I/MR
BrandMicrochip
HK$20.79
Each (In a Tube of 40)
units
PIC16F QFN Surface Mount 64 PIC 8bit 28 kB 32MHz 1.024 kB, 256 B - 5 17 2 1.8 5.5 V
RS Stock No. 400-295
Mfr. Part No.PIC16F716-I/P
BrandMicrochip
HK$11.60
Each (In a Pack of 5)
units
PIC16F PDIP Through Hole 18 PIC 8bit 2048 x 14 words 20MHz 128 B - 1 4 - 2 to 5.5 V
RS Stock No. 755-9354
Mfr. Part No.PIC24EP512GU810-I/PT
BrandMicrochip
HK$73.42
Each
units
PIC24EP TQFP Surface Mount 100 PIC 16bit 536 kB 70MHz 52 kB 1 - 32 4 3 → 3.6 V
RS Stock No. 328-3387
Mfr. Part No.PIC16C711-20I/P
BrandMicrochip
HK$28.99
Each
units
PIC16C PDIP Through Hole 18 PIC 8bit 1K x 14 words 20MHz 68 B - - 4 - 2.5 to 6 V
RS Stock No. 165-2087
Mfr. Part No.PIC16LF1455-I/ST
BrandMicrochip
HK$11.94
Each (In a Tube of 96)
units
- - - - - - - - 1.024 kB - - - - -
RS Stock No. 872-2492
Mfr. Part No.PIC16C711-04/P
BrandMicrochip
HK$24.528
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. 666-8393
Mfr. Part No.dsPIC33FJ12MC202-I/SS
BrandMicrochip
HK$27.96
Each
units
DsPIC33F SSOP Surface Mount 28 DsPIC 16bit 12 kB 40MIPS 1 kB - 4 6 1 3 3.6 V
RS Stock No. 761-7513
Mfr. Part No.PIC16F1509-I/SS
BrandMicrochip
HK$9.80
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. 178-4910
Mfr. Part No.DSPIC33FJ12MC202-I/SS
BrandMicrochip
HK$25.636
Each (In a Tube of 47)
units
DsPIC33F SSOP Surface Mount 28 DsPIC 16bit 12 kB 40MIPS 1 kB - 4 6 1 3 3.6 V
RS Stock No. 792-5934
Mfr. Part No.STM32F030R8T6
HK$16.464
Each (In a Pack of 5)
units
STM32F LQFP Surface Mount 64 ARM Cortex M0 32bit 64 kB 48MHz 8 kB - 1 18 2 3.6 V
RS Stock No. 165-3450
Mfr. Part No.PIC16F1509-E/SS
BrandMicrochip
HK$9.922
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. 539-0409
Mfr. Part No.MC68HC908QT1CPE
BrandNXP
HK$19.39
Each
units
M68HC08 PDIP Through Hole 8 HC08 8bit 1.5 kB 32MHz 128 B - 1 - - 2.7 to 5.5 V
RS Stock No. 876-6717
Mfr. Part No.PIC16F887-I/PT
BrandMicrochip
HK$20.848
Each (In a Tray of 160)
units
PIC16F TQFP Surface Mount 44 PIC 8bit 8192 words 20MHz 368 B - 2 14 1 2 5.5 V
RS Stock No. 165-4804
Mfr. Part No.PIC16C55A-04/P
BrandMicrochip
HK$15.66
Each (In a Tube of 15)
units
PIC16C PDIP Through Hole 28 PIC 8bit 512 x 12 words 4MHz 24 B - - - - 2.5 5.5 V
RS Stock No. 919-6270
Mfr. Part No.STM32F030R8T6
HK$12.17
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
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