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 623-0819
製造零件編號PIC18F4520-I/P
BrandMicrochip
TWD143
單位
PIC18F PDIP Through Hole 40 PIC 8bit 32 kB, 256 B 40MHz 1.536 kB - 2 13 1 4.2 to 5.5 V
RS庫存編號 166-1143
製造零件編號STM32L051K8T6
TWD73
Each (In a Tray of 250)
單位
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 725-7727
製造零件編號LPC1754FBD80,551
BrandNXP
TWD249
單位
LPC17 LQFP Surface Mount 80 ARM Cortex M3 32bit 128 kB 100MHz 32 kB 1 x Device, 1 x Host, 1 x OTG 2 6 3 3.3 V
RS庫存編號 887-7123
製造零件編號PIC32MX795F512L-80I/PT
BrandMicrochip
TWD267
Each (In a Tray of 119)
單位
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庫存編號 168-7352
製造零件編號STM32F103VDT6
TWD225
Each (In a Tray of 90)
單位
STM32F LQFP Surface Mount 100 ARM Cortex M3 32bit 384 kB 72MHz 64 kB 1 x Device 2 16 3 2 → 3.6 V
RS庫存編號 133-0149
製造零件編號CC1310F128RGZT
TWD207
單位
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 400-867
製造零件編號PIC18F6722-I/PT
BrandMicrochip
TWD287
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 743-2659
製造零件編號PIC16F1507-I/SS
BrandMicrochip
TWD33
/個 (每包:4個)
單位
PIC16F SSOP Surface Mount 20 PIC 8bit 3.5 kB 20MHz 128 B - 1 12 - 2.3 → 5.5 V
RS庫存編號 168-9903
製造零件編號C8051F340-GQ
TWD296
Each (In a Tray of 250)
單位
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 911-5805
製造零件編號PIC16F1823-I/ST
BrandMicrochip
TWD34
毎管:96 個
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 757-4719
製造零件編號C8051F340-GQ
TWD294
單位
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 170-8880
製造零件編號MK21FN1M0AVMC12
BrandNXP
TWD332
Each (In a Tray of 348)
單位
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 920-6468
製造零件編號STM32F407VGT6
TWD366
Each (In a Tray of 90)
單位
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
RS庫存編號 919-6324
製造零件編號STM32F429IIT6
TWD474
Each (In a Tray of 40)
單位
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 741-4248
製造零件編號PIC16F1527-I/PT
BrandMicrochip
TWD85
/個 (每包:2個)
單位
PIC16F TQFP Surface Mount 64 PIC 8bit 28 kB 20MHz 1.536 kB - 1 30 2 2.3 → 5.5 V
RS庫存編號 123-9798
製造零件編號PIC24FJ256GB106-I/PT
BrandMicrochip
TWD154
Each (In a Tray of 160)
單位
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 165-9774
製造零件編號LPC11U35FHI33/501,
BrandNXP
TWD107
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 145-8996
製造零件編號PIC16F1507-I/SS
BrandMicrochip
TWD30
毎管:67 個
單位
PIC16F SSOP Surface Mount 20 PIC 8bit 3.5 kB 20MHz 128 B - 1 12 - 2.3 → 5.5 V
RS庫存編號 792-6035
製造零件編號STM32F429IIT6
TWD522
單位
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 746-8226
製造零件編號STM32F407VGT6
TWD430
單位
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