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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Tillv. art.nrPIC18F252-I/SO
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PIC18F SOIC Surface Mount 28 PIC 8bit 32 kB 40MHz 1.536 kB - 2 5 1 4.2 → 5.5 V
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Tillv. art.nrSTM32F101VGT6
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STM32F LQFP Surface Mount 100 ARM Cortex M3 32bit 1 MB 36MHz 80 kB - 4 16 3 2 → 3.6 V
RS-artikelnummer 876-7060
Tillv. art.nrPIC18F97J60-I/PT
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47,018 kr
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PIC18F TQFP Surface Mount 100 PIC 8bit 128 kB 41.667MHz 3.808 kB - 5 16 2 2.35 → 3.6 V
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Tillv. art.nrPIC16F18313-I/P
VarumärkeMicrochip
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PIC16F PDIP Through Hole 8 PIC 8bit 3.5 kB 32MHz 256 B - 1 5 - 2.3 → 5.5 V
RS-artikelnummer 400-784
Tillv. art.nrPIC18F97J60-I/PT
VarumärkeMicrochip
52,22 kr
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PIC18F TQFP Surface Mount 100 PIC 8bit 128 kB 41.667MHz 3.808 kB - 5 16 2 2.35 → 3.6 V
RS-artikelnummer 687-9348
Tillv. art.nrPIC32MX795F512L-80I/PT
VarumärkeMicrochip
90,48 kr
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PIC32MX TQFP Surface Mount 100 PIC 32bit 12 kB, 512 kB 80MHz 128 kB 1 x Device 5 16 4 2.3 → 3.6 V
RS-artikelnummer 144-9162
Tillv. art.nrPIC18F252-I/SO
VarumärkeMicrochip
53,136 kr
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PIC18F SOIC Surface Mount 28 PIC 8bit 32 kB 40MHz 1.536 kB - 2 5 1 4.2 → 5.5 V
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Tillv. art.nrPIC16F18325-I/SL
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PIC16F SOIC Surface Mount 14 PIC 8bit 14 kB 32MHz 1.024 kB - 1 11 - 2.3 → 5.5 V
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Tillv. art.nrPIC16F18313-I/P
VarumärkeMicrochip
7,052 kr
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PIC16F PDIP Through Hole 8 PIC 8bit 3.5 kB 32MHz 256 B - 1 5 - 2.3 → 5.5 V
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Tillv. art.nrPIC18F2520-I/SP
VarumärkeMicrochip
46,84 kr
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PIC18F SPDIP Through Hole 28 PIC 8bit 32 kB, 256 B 40MHz 1.536 kB - 2 10 1 4.2 to 5.5 V
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Tillv. art.nrPIC16F18323-I/SL
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PIC16F SOIC Surface Mount 14 PIC 8bit 3.5 kB 32MHz 256 B - 1 11 - 2.3 → 5.5 V
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106,50 kr
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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
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HCS12 LQFP Surface Mount 112 HSC12 16bit 128 kB 25MHz 8 kB - 2 8 2 2.5 → 5 V
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R8C / 33C LQFP Surface Mount 32 R8C CPU 16bit 4 (Flash) kB, 16 (ROM) kB 20MHz 1.5 kB - - 12 - 1.8 → 5.5 V
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STM32F LQFP Surface Mount 64 ARM Cortex M3 32bit 256 kB 72MHz 48 kB 1 x Device 2 16 3 2 → 3.6 V
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Tillv. art.nrPIC32MX795F512L-80I/PT
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PIC32MX TQFP Surface Mount 100 PIC 32bit 12 kB, 512 kB 80MHz 128 kB 1 x Device 5 16 4 2.3 → 3.6 V
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PIC16F SOIC Surface Mount 14 PIC 8bit 3.5 kB 32MHz 256 B - 1 11 - 2.3 → 5.5 V
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XMC4000 LQFP Surface Mount 144 ARM Cortex M4 32bit 1.024 MB 120MHz 160 kB 1 - 12 - 1.3 (Core) V, 3.3 (Digital) V
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PIC16F SOIC Surface Mount 14 PIC 8bit 2048 words 20MHz 128 B - 4 10 1 2.3 → 5.5 V
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PIC18F PDIP Through Hole 40 PIC 8bit 32 kB, 256 B 48MHz 2.048 kB 1 x Device 2 13 1 4.2 to 5.5 V
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