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庫存編號 792-5925
製造零件編號STM32F030F4P6
TWD39.30
/個 (每包:10個)
單位
STM32F TSSOP Surface Mount 20 ARM Cortex M0 32bit 16 kB 48MHz 4 kB - 1 11 1 3.6 V
RS庫存編號 165-6667
製造零件編號STM32F103TBU6
TWD148.20
Each (In a Tray of 490)
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STM32F VFQFPN Surface Mount 36 ARM Cortex M3 32bit 128 kB 72MHz 20 kB 1 1 10 1 3.6 V
RS庫存編號 623-0099
製造零件編號PIC12F509-I/P
BrandMicrochip
TWD25.00
單位
PIC12F PDIP Through Hole 8 PIC 8bit 1024 x 12 words 4MHz 41 B - - - - 2 to 5.5 V
RS庫存編號 795-6953
製造零件編號STM32F103TBU6
TWD192.00
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STM32F VFQFPN Surface Mount 36 ARM Cortex M3 32bit 128 kB 72MHz 20 kB 1 1 10 1 3.6 V
RS庫存編號 719-3972
製造零件編號ATMEGA644PA-PU
BrandMicrochip
TWD192.00
單位
ATmega PDIP Through Hole 40 AVR 8bit 2 kB, 64 kB 20MHz 4 kB - 3 8 1 1.8 to 5.5 V
RS庫存編號 889-5351
製造零件編號PIC12F508-I/P
BrandMicrochip
TWD18.90
毎管:60 個
單位
PIC12 PDIP Through Hole 8 PIC 8bit 512 x 12 words 4MHz 25 B - - - - 2 to 5.5 V
RS庫存編號 146-3267
製造零件編號PIC32MM0064GPL028-I/SS
BrandMicrochip
TWD43.00
毎管:47 個
單位
PIC32 SSOP Surface Mount 28 MicroAptiv UC 32 bit 32bit 64 kB 25MHz 8 kB - 1 12 2 2 → 3.6 V
RS庫存編號 168-9903
製造零件編號C8051F340-GQ
TWD295.90
Each (In a Tray of 250)
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C8051F TQFP Surface Mount 48 8051 8bit 64 kB 48MHz 4.352 kB 2 2 17 1 2.7 → 5.25 V
RS庫存編號 792-6035
製造零件編號STM32F429IIT6
TWD522.00
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STM32F LQFP Surface Mount 176 ARM Cortex M4 32bit 2.048 MB 180MHz 256 kB 2 2 24 6 3.6 V
RS庫存編號 400-867
製造零件編號PIC18F6722-I/PT
BrandMicrochip
TWD287.00
單位
PIC18F TQFP Surface Mount 64 PIC 8bit 1.024 kB, 128 kB 40MHz 3.936 kB - 5 12 2 4.2 → 5.5 V
RS庫存編號 703-7810
製造零件編號PIC16F1823-I/ST
BrandMicrochip
TWD41.00
單位
PIC16F TSSOP Surface Mount 14 PIC 8bit 2K x 14 words, 256 B 32MHz 128 B - 1 8 1 1.8 → 5.5 V
RS庫存編號 110-7088
製造零件編號STM32L051K8T6
TWD97.00
/個 (每包:2個)
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STM32 LQFP Surface Mount 32 ARM Cortex M0+ 32bit 64 kB 32MHz 8 kB - - 10 - 1.65 → 3.6 V
RS庫存編號 171-1759
製造零件編號EFM8LB12F64E-B-QFP32
TWD52.90
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EFM8LB1 QFP Surface Mount 32 CIP-51 8bit 64 kB 72MHz 4.352 kB - - 20 - 2.2 → 3.6 V
RS庫存編號 123-9798
製造零件編號PIC24FJ256GB106-I/PT
BrandMicrochip
TWD154.10
Each (In a Tray of 160)
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PIC24FJ TQFP Surface Mount 64 PIC 16bit 256 kB 32MHz 16 kB 1 x OTG 9 16 3 2 → 3.6 V
RS庫存編號 168-4935
製造零件編號CC1310F128RGZT
TWD146.80
個 (在毎卷:250)
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CC13xx VQFN Surface Mount 48 ARM Cortex M3 16bit 128 kB 48MHz 20 kB - - 8 - 1.8 → 3.8 V
RS庫存編號 165-9774
製造零件編號LPC11U35FHI33/501,
BrandNXP
TWD106.80
Each (In a Tray of 490)
單位
LPC11U QFN Surface Mount 33 ARM Cortex M0 32bit 64 kB 50MHz 12 kB 1 - 8 2 3.3 V
RS庫存編號 739-6945
製造零件編號UPD78F0455GB-GAH-AX
TWD102.00
單位
UPD78 LQFP Surface Mount 64 78K0 8bit 60 kB 10MHz 3 kB - 2 8 1 1.8 → 5.5 V
RS庫存編號 170-8880
製造零件編號MK21FN1M0AVMC12
BrandNXP
TWD332.20
Each (In a Tray of 348)
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Kinetis K2x MAPBGA Surface Mount 121 ARM Cortex M4 32bit 1 MB 120MHz 128 kB 1 3 44 - 1.71 → 3.6 V
RS庫存編號 526-8879
製造零件編號C8051F005-GQ
TWD408.00
單位
C8051F TQFP Surface Mount 64 8051 8bit 32 kB 25MHz 2.304 kB - 5 8 1 2.7 → 3.6 V
RS庫存編號 663-4056
製造零件編號M30260F8BGP
TWD251.00
單位
R8C LQFP Surface Mount 48 M16C/26A 16bit 64 kB 24MHz 2 kB - 1 12 - 4.2 → 5.5 V