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 912-2991
製造零件編號PIC12F1501-I/P
BrandMicrochip
TWD21.70
毎管:60 個
單位
PIC12F PDIP Through Hole 8 PIC 8bit 1024 words 20MHz 64 B - 4 4 - 2.3 to 5.5 V
RS庫存編號 111-6473
製造零件編號STM32L031K6T7
TWD90.20
/個 (每包:5個)
單位
STM32 LQFP Surface Mount 32 ARM Cortex M0+ 32bit 32 kB 32MHz 8 kB - - 10 - 1.65 → 3.6 V
RS庫存編號 177-7182
製造零件編號STM32F746ZGT6
TWD478.30
Each (In a Tray of 60)
單位
STM32F LQFP Surface Mount 144 ARM Cortex M7 32bit 1.024 MB 216MHz 340 kB 2 2 24 - 1.7 → 3.6 V
RS庫存編號 170-8959
製造零件編號MKE04Z8VWJ4
BrandNXP
TWD36.50
毎管:38 個
單位
Kinetis E SOIC Surface Mount 20 ARM Cortex M0+ 32bit 8 kB 48MHz 1 kB - 2 12 1 2.7 → 5.5 V
RS庫存編號 715-4191
製造零件編號PIC18F45K80-I/PT
BrandMicrochip
TWD104.00
單位
PIC18F TQFP Surface Mount 44 PIC 8bit 32 kB 64MHz 1.024 kB, 3.648 kB - 2 11 1 3.3 V
RS庫存編號 882-0290
製造零件編號STM32F746ZGT6
TWD467.00
單位
STM32F LQFP Surface Mount 144 ARM Cortex M7 32bit 1.024 MB 216MHz 340 kB 2 2 24 - 1.7 → 3.6 V
RS庫存編號 792-5934
製造零件編號STM32F030R8T6
TWD58.00
/個 (每包:5個)
單位
STM32F LQFP Surface Mount 64 ARM Cortex M0 32bit 64 kB 48MHz 8 kB - 1 18 2 3.6 V
RS庫存編號 165-3456
製造零件編號PIC16F1503-I/ST
BrandMicrochip
TWD25.40
毎管:96 個
單位
PIC16F TSSOP Surface Mount 14 PIC 8bit 2048 words 20MHz 128 B - 4 10 1 2.3 → 5.5 V
RS庫存編號 829-7151
製造零件編號STM32F030F4P6TR
TWD41.30
/個 (每包:10個)
單位
STM32F TSSOP Surface Mount 20 ARM Cortex M0 32bit 16 kB 48MHz 4 kB - - 11 1 2.4 → 3.6 V
RS庫存編號 889-5477
製造零件編號PIC18F45K80-I/PT
BrandMicrochip
TWD84.70
Each (In a Tray of 160)
單位
PIC18F TQFP Surface Mount 44 PIC 8bit 32 kB 64MHz 1.024 kB, 3.648 kB - 2 11 1 3.3 V
RS庫存編號 840-6588
製造零件編號MKE04Z8VWJ4
BrandNXP
TWD37.20
/個 (每包:10個)
單位
Kinetis E SOIC Surface Mount 20 ARM Cortex M0+ 32bit 8 kB 48MHz 1 kB - 2 12 1 2.7 → 5.5 V
RS庫存編號 919-6260
製造零件編號STM32F030F4P6
TWD32.20
毎管:74 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 168-8744
製造零件編號STM32F030F4P6TR
TWD20.20
個 (在毎卷:2500)
單位
STM32F TSSOP Surface Mount 20 ARM Cortex M0 32bit 16 kB 48MHz 4 kB - - 11 1 2.4 → 3.6 V
RS庫存編號 761-7517
製造零件編號PIC12F1501-I/P
BrandMicrochip
TWD24.00
/個 (每包:5個)
單位
PIC12F PDIP Through Hole 8 PIC 8bit 1024 words 20MHz 64 B - 4 4 - 2.3 to 5.5 V
RS庫存編號 166-0921
製造零件編號STM32L031K6T7
TWD66.10
Each (In a Tray of 250)
單位
STM32 LQFP Surface Mount 32 ARM Cortex M0+ 32bit 32 kB 32MHz 8 kB - - 10 - 1.65 → 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)
單位
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 889-5853
製造零件編號PIC12F509-I/P
BrandMicrochip
TWD20.70
毎管:60 個
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 102-3541
製造零件編號STM32F103CBT6
TWD145.40
Each (In a Tray of 250)
單位
STM32F LQFP Surface Mount 48 ARM Cortex M3 32bit 128 kB 72MHz 20 kB 1 x Device 1 10 2 2 → 3.6 V
RS庫存編號 819-0735
製造零件編號PIC18F45K80T-I/PT
BrandMicrochip
TWD85.90
個 (在毎卷:1200)
單位
PIC18F TQFP Surface Mount 44 PIC18F 8bit 32 kB 64MHz 3.648 kB 1 4 11 1 1.8 → 5.5 V
RS庫存編號 628-3425
製造零件編號ATMEGA8535L-8PU
BrandMicrochip
TWD177.00
單位
ATmega PDIP Through Hole 40 AVR 8bit 8 kB, 512 B 8MHz 512 B - 2 8 1 2.7 to 5.5 V