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. 799-5494
Mfr. Part No.PIC32MZ2048ECG100-I/PT
BrandMicrochip
kr 105,28
Each
Units
PIC32MZ TQFP Surface Mount 100 PIC 32bit 2.048 MB 200MHz 512 kB 1 - 40 6 2.2 → 3.6 V
RS Stock No. 144-5759
Mfr. Part No.PIC18F452-I/P
BrandMicrochip
kr 57,557
Each (In a Tube of 10)
Units
PIC18F PDIP Through Hole 40 PIC 8bit 32 kB 40MHz 1.536 kB - 2 8 1 4.2 → 5.5 V
RS Stock No. 799-5479
Mfr. Part No.PIC32MZ1024ECG100-I/PT
BrandMicrochip
kr 94,62
Each
Units
PIC32MZ TQFP Surface Mount 100 PIC 32bit 1.024 MB 200MHz 512 kB 1 - 40 6 2.2 → 3.6 V
RS Stock No. 746-8210
Mfr. Part No.STM32F407IGH6
kr 101,30
Each
Units
STM32F UFBGA Surface Mount 176 ARM Cortex M4F 32bit 1.024 MB 168MHz 4 kB, 192 kB 1 x Device, 1 x Host, 1 x OTG 1 24 3 1.8 → 3.6 V
RS Stock No. 165-2224
Mfr. Part No.PIC32MZ2048ECG100-I/PT
BrandMicrochip
kr 101,774
Each (In a Tray of 119)
Units
PIC32MZ TQFP Surface Mount 100 PIC 32bit 2.048 MB 200MHz 512 kB 1 - 40 6 2.2 → 3.6 V
RS Stock No. 882-0287
Mfr. Part No.STM32F746NGH6
kr 132,10
Each
Units
STM32F TFBGA Surface Mount 216 ARM Cortex M7 32bit 1.024 MB 216MHz 340 kB 2 2 24 - 1.7 → 3.6 V
RS Stock No. 144-9132
Mfr. Part No.PIC16F628-04/SO
BrandMicrochip
kr 22,437
Each (In a Tube of 42)
Units
PIC16F SOIC Surface Mount 18 PIC 8bit 128 x 8 words, 2048 x 14 words 4MHz 224 B - 1 - - 3 → 5.5 V
RS Stock No. 912-2780
Mfr. Part No.PIC32MZ1024ECG100-I/PT
BrandMicrochip
kr 91,365
Each (In a Tray of 119)
Units
PIC32MZ TQFP Surface Mount 100 PIC 32bit 1.024 MB 200MHz 512 kB 1 - 40 6 2.2 → 3.6 V
RS Stock No. 666-9321
Mfr. Part No.PIC18LF2620-I/SP
BrandMicrochip
kr 63,11
Each
Units
PIC18F SPDIP Through Hole 28 PIC 8bit 1.024 kB, 64 kB 40MHz 3.986 kB - 2 10 1 2 to 5.5 V
RS Stock No. 667-0059
Mfr. Part No.PIC18F45J50-I/PT
BrandMicrochip
kr 29,41
Each
Units
PIC18F TQFP Surface Mount 44 PIC 8bit 32 kB 48MHz 3.776 kB 1 x Device 2 13 2 2.15 → 3.6 V
RS Stock No. 145-9096
Mfr. Part No.PIC16LF1559-I/SS
BrandMicrochip
kr 8,233
Each (In a Tube of 67)
Units
PIC16F SSOP Surface Mount 20 PIC16LF 8bit 8192 words 32MHz 512 B - - 17 1 1.8 → 3.6 V
RS Stock No. 144-5745
Mfr. Part No.PIC16F873-04/SP
BrandMicrochip
kr 43,569
Each (In a Tube of 15)
Units
PIC16F SPDIP Through Hole 28 PIC 8bit 8K x 14 words, 256 x 8 words 4MHz 192 B - 2 5 1 4 → 5.5 V
RS Stock No. 875-1012
Mfr. Part No.CC2650F128RGZT
kr 47,46
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. 698-9000
Mfr. Part No.PIC16F877-20I/P
BrandMicrochip
kr 65,30
Each
Units
PIC16F PDIP Through Hole 40 PIC 8bit 8K x 14 words, 256 x 8 words 20MHz 368 B - 2 8 1 4 → 5.5 V
RS Stock No. 889-5415
Mfr. Part No.PIC18F26K22-I/ML
BrandMicrochip
kr 22,784
Each (In a Tube of 61)
Units
PIC18F QFN Surface Mount 28 PIC 8bit 64 kB 64MHz 3.896 kB - 5 17 2 5.5 V
RS Stock No. 145-8887
Mfr. Part No.STM32F303RET6
kr 47,149
Each (In a Tray of 160)
Units
STM32F LQFP Surface Mount 64 ARM Cortex M4 32bit 512 kB 72MHz 16 (CCM) kB, 64 (SRAM) kB 1 1 22 4 2 → 3.6 V
RS Stock No. 715-4466
Mfr. Part No.PIC18F26K22-I/ML
BrandMicrochip
kr 25,72
Each
Units
PIC18F QFN Surface Mount 28 PIC 8bit 64 kB 64MHz 3.896 kB - 5 17 2 5.5 V
RS Stock No. 625-9084
Mfr. Part No.Z84C2006PEG
BrandZilog
kr 51,84
Each
Units
Z80 PDIP Through Hole 40 Z80 8bit - 6.17MHz - - - - - 4.5 → 5.5 V
RS Stock No. 144-5760
Mfr. Part No.PIC18F452-I/PT
BrandMicrochip
kr 64,765
Each (In a Tray of 160)
Units
PIC18F TQFP Surface Mount 44 PIC 8bit 32 kB 40MHz 1.536 kB - 2 8 1 4.2 → 5.5 V
RS Stock No. 887-7407
Mfr. Part No.PIC16F688-I/SL
BrandMicrochip
kr 14,11
Each (In a Tube of 57)
Units
PIC16F SOIC Surface Mount 14 PIC 8bit 256 B, 4096 x 14 words 20MHz 256 B - - 8 1 2 → 5.5 V
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