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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Beskrivning Pris 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
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Tillv. art.nrSTM32F303CBT6TR
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STM32F LQFP Surface Mount 48 ARM Cortex M4 32bit 128 kB 72MHz 32 kB 1 5 39 2 3.6 V
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Tillv. art.nrXC164CS16F40FBBFXQMA1
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XC166 TQFP Surface Mount 100 C166S V2 16bit 128 kB 20MHz 2 (DPRAM) kB, 2 (PSRAM) kB, 4 (DSRAM) kB - - 14 - 2.35 → 2.7 (Core) V, 4.4 → 5.5 (I/O) V
RS-artikelnummer 914-0078
Tillv. art.nrXMC1100T016F0064ABXUMA1
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XMC1000 TSSOP Surface Mount 16 ARM Cortex M0 32bit 64 kB 66.4MHz 16 kB - - 6 - 1.8 → 5.5 V
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Tillv. art.nrLPC1766FBD100,551
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LPC17 LQFP Surface Mount 100 ARM Cortex M3 32bit 256 kB 100MHz 64 kB 1 x Device, 1 x Host, 1 x OTG 2 8 3 3.3 V
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Tillv. art.nrSTM32F030K6T6
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STM32F LQFP Surface Mount 32 ARM Cortex 32bit 32 kB 48MHz 4 kB - - 12 1 2.4 → 3.6 V
RS-artikelnummer 165-5858
Tillv. art.nrSTM32F030K6T6
VarumärkeSTMicroelectronics
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STM32F LQFP Surface Mount 32 ARM Cortex 32bit 32 kB 48MHz 4 kB - - 12 1 2.4 → 3.6 V
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VarumärkeSTMicroelectronics
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STM32F LQFP Surface Mount 64 ARM Cortex M4F 32bit 256 kB 72MHz 32 kB 1 11 16, 21 3 2 → 3.6 V
RS-artikelnummer 144-5757
Tillv. art.nrPIC18F252-I/SP
VarumärkeMicrochip
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PIC18F SPDIP Through Hole 28 PIC 8bit 32 kB 40MHz 1.536 kB - 2 5 1 4.2 → 5.5 V
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Tillv. art.nrPIC16F1938-I/SO
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PIC16F SOIC Surface Mount 28 PIC 8bit 16384 words 32MHz 1.024 kB 1 1 11 1 2.5 → 3.6 V
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Tillv. art.nrPIC12F1571-I/SN
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PIC12F SOIC Surface Mount 8 PIC 8bit 1 kwords 16MHz 128 B 1 3 4 - 5.5 V
RS-artikelnummer 467-1397
Tillv. art.nrPIC16F74-I/PT
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PIC16F TQFP Surface Mount 44 PIC 8bit 4K x 14 words 20MHz 192 B - 2 8 1 4 → 5.5 V
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Tillv. art.nrMC9S12DG128CPVE
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HCS12 LQFP Surface Mount 112 HSC12 16bit 128 kB 25MHz 8 kB - 2 8 2 2.5 → 5 V
RS-artikelnummer 144-9162
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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PIC16F TQFP Surface Mount 44 PIC 8bit 4K x 14 words 20MHz 192 B - 2 8 1 4 → 5.5 V
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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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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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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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STM8S TSSOP Surface Mount 20 STM8 8bit 8 kB, 640 B 16MHz 1 kB - 1 5 1 2.95 → 5.5 V
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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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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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