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. 876-6922
Mfr. Part No.PIC16F616-I/P
BrandMicrochip
MYR5.996
Each (In a Tube of 30)
units
PIC16F PDIP Through Hole 14 PIC 8bit 2048 words 20MHz 128 B - - 8 - 2 to 5.5 V
RS Stock No. 786-2199
Mfr. Part No.MKL26Z128VMC4
BrandNXP
MYR40.59
Each
units
Kinetis L BGA Surface Mount 121 ARM Cortex M0+ - 128 kB 48MHz 16 kB 1 1, 2 1 2 3.3 → 5 V
RS Stock No. 889-5348
Mfr. Part No.PIC10F200T-I/OT
BrandMicrochip
MYR2.191
Each (On a Reel of 3000)
units
PIC10 SOT-23 Surface Mount 6 PIC 8bit 256 x 12 words 4MHz 16 B - - - - 2 → 5.5 V
RS Stock No. 400-558
Mfr. Part No.PIC16F616-I/P
BrandMicrochip
MYR6.184
Each (In a Pack of 5)
units
PIC16F PDIP Through Hole 14 PIC 8bit 2048 x 14 words 20MHz 128 B - 1 8 - 2 to 5.5 V
RS Stock No. 887-7126
Mfr. Part No.PIC18F4620-I/P
BrandMicrochip
MYR36.717
Each (In a Tube of 10)
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. 623-0768
Mfr. Part No.PIC18F2620-I/SP
BrandMicrochip
MYR35.97
Each
units
PIC18F SPDIP Through Hole 28 PIC 8bit 1.024 kB, 64 kB 40MHz 3.986 kB - 2 10 1 4.2 to 5.5 V
RS Stock No. 467-2110
Mfr. Part No.PIC18F452-I/L
BrandMicrochip
MYR37.86
Each
units
PIC18F PLCC Surface Mount 44 PIC 8bit 32 kB 40MHz 1.536 kB - 2 8 1 4.2 → 5.5 V
RS Stock No. 887-7120
Mfr. Part No.PIC18F4550-I/PT
BrandMicrochip
MYR29.465
Each (In a Tray of 160)
units
PIC18F TQFP Surface Mount 44 PIC 8bit 32 kB, 256 B 48MHz 2.048 kB 1 x Device 2 13 1 4.2 → 5.5 V
RS Stock No. 666-8501
Mfr. Part No.PIC10F200T-I/OT
BrandMicrochip
MYR2.26
Each (In a Pack of 5)
units
PIC10 SOT-23 Surface Mount 6 PIC 8bit 256 x 12 words 4MHz 16 B - - - - 2 → 5.5 V
RS Stock No. 144-5727
Mfr. Part No.PIC18F26K20-I/SO
BrandMicrochip
MYR10.238
Each (In a Tube of 27)
units
PIC18F SOIC Surface Mount 28 PIC 8bit 1.024 kB, 64 kB 64MHz 3.936 kB - 2 11 1 1.8 → 3.6 V
RS Stock No. 785-7500
Mfr. Part No.MK60DN512VLQ10
BrandNXP
MYR61.87
Each
units
Kinetis K6x LQFP Surface Mount 144 ARM Cortex M4 - 512 kB 100MHz 128 kB 1 1 - 3 1.71 → 3.6 V
RS Stock No. 165-6579
Mfr. Part No.STM32F207ZCT6
MYR33.093
Each (In a Tray of 360)
units
STM32F LQFP Surface Mount 144 ARM Cortex M3 32bit 256 kB 120MHz 128 kB 2 2 24 3 3.6 V
RS Stock No. 110-7760
Mfr. Part No.XC164CS16F40FBBFXQMA1
BrandInfineon
MYR82.40
Each
units
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 Stock No. 920-6525
Mfr. Part No.STM32F103ZET6
MYR42.825
Each (In a Tray of 60)
units
STM32F LQFP Surface Mount 144 ARM Cortex M3 32bit 512 kB 72MHz 64 kB 1 x Device 2 21 3 2 → 3.6 V
RS Stock No. 887-7230
Mfr. Part No.PIC18F14K22-I/SS
BrandMicrochip
MYR7.794
Each (In a Tube of 67)
units
PIC18F SSOP Surface Mount 20 PIC 8bit 16 kB, 256 B 64MHz 512 B - 1 12 1 2.3 → 5.5 V
RS Stock No. 879-3299
Mfr. Part No.PIC32MX530F128H-I/PT
BrandMicrochip
MYR16.685
Each (In a Pack of 2)
units
PIC32MX TQFP Surface Mount 64 PIC 32bit 128 kB 50MHz 16 kB 1 x OTG 5 28 3 2.3 → 3.6 V
RS Stock No. 876-6714
Mfr. Part No.PIC16F887-I/P
BrandMicrochip
MYR13.586
Each (In a Tube of 10)
units
PIC16F PDIP Through Hole 40 PIC 8bit 8192 words 20MHz 368 B - 2 14 1 2 to 5.5 V
RS Stock No. 165-2237
Mfr. Part No.PIC10F206T-I/OT
BrandMicrochip
MYR2.589
Each (On a Reel of 3000)
units
PIC10F SOT-23 Surface Mount 6 PIC 8bit 512 words 4MHz 24 B - - - - 2 → 5.5 V
RS Stock No. 166-0890
Mfr. Part No.XC164CS16F40FBBFXQMA1
BrandInfineon
MYR76.124
Each (In a Tray of 540)
units
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 Stock No. 889-5629
Mfr. Part No.PIC12F615-I/SN
BrandMicrochip
MYR3.941
Each (In a Tube of 100)
units
PIC12F SOIC Surface Mount 8 PIC 8bit 1024 x 14 words 20MHz 64 B - 1 4 - 2 → 5.5 V