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 623-0140
製造零件編號PIC12F635-I/P
BrandMicrochip
TWD38.00
單位
PIC12F PDIP Through Hole 8 PIC 8bit 128 B, 1024 x 14 words 20MHz 64 B - - - - 2 to 5.5 V
全新
RS庫存編號 189-4026
製造零件編號STM32L433VCT6
TWD253.00
/個 (每包:2個)
單位
STM32L LQFP Surface Mount 100 ARM Cortex M4 32bit 256 kB 80MHz 64 kB 1 - 10 3 1.71 → 3.6 V
RS庫存編號 876-6711
製造零件編號PIC16F883-I/SO
BrandMicrochip
TWD56.80
毎管:27 個
單位
PIC16F SOIC Surface Mount 28 PIC 8bit 4096 words 20MHz 256 B - 2 11 1 2 → 5.5 V
RS庫存編號 768-2479
製造零件編號R5F104BAAFP#V0
TWD58.50
/個 (每包:2個)
單位
RL78 LQFP Surface Mount 32 RL78/G14 16bit 4 kB, 16 kB 32MHz 2.5 kB - 1 8 - 1.6 → 5.5 V
RS庫存編號 912-6445
製造零件編號ADUC7020BCPZ62
TWD347.30
Each (In a Tray of 490)
單位
ADuC7 LFCSP WQ Surface Mount 40 ARM7TDMI 16/32bit 62 kB 44MHz 8 kB - 1 5 1 2.7 → 3.6 V
RS庫存編號 914-0084
製造零件編號XMC1301T038F0032ABXUMA1
BrandInfineon
TWD57.00
/個 (每包:5個)
單位
XMC1000 TSSOP Surface Mount 38 ARM Cortex M0 32bit 32 kB 66.4MHz 16 kB - - 16 - 1.8 → 5.5 V
RS庫存編號 177-3507
製造零件編號ATXMEGA64A3-AU
BrandMicrochip
TWD231.80
Each (In a Tray of 90)
單位
ATMEGA TQFP Surface Mount 64 AVR 8 bit, 16 bit 64 kB 32MHz 4 B - - 8 10 1.6 → 3.6 V
RS庫存編號 704-7700
製造零件編號PIC18F46J53-I/PT
BrandMicrochip
TWD131.00
單位
PIC18F TQFP Surface Mount 44 PIC 8bit 64 kB 48MHz 3.8 kB - 10 13 2 2.15 → 3.6 V
RS庫存編號 177-2145
製造零件編號PIC16LF18323-I/SL
BrandMicrochip
TWD24.90
毎管:57 個
單位
PIC16LF SOIC Surface Mount 14 8 bit CPU 8bit 3.5 kB 32MHz 256 B - 1 11 1 5.5 (Maximum) V
RS庫存編號 168-2686
製造零件編號PIC18LF26K83-I/SS
BrandMicrochip
TWD65.90
毎管:47 個
單位
PIC18LF SSOP Surface Mount 28 PIC18LF 16bit 64 kB 64MHz 4 kB - 4 24 1 3.6 (Maximum) V
RS庫存編號 889-6058
製造零件編號PIC24FJ64GA104-I/PT
BrandMicrochip
TWD97.70
Each (In a Tray of 160)
單位
PIC24FJ TQFP Surface Mount 44 PIC 16bit 64 kB 32MHz 8 kB - 5 13 2 2 → 3.6 V
RS庫存編號 133-1725
製造零件編號ATXMEGA32A4U-AU
BrandMicrochip
TWD104.50
/個 (每包:2個)
單位
AVR XMEGA TQFP Surface Mount 44 AVR 8/16bit 32 + 4 kB 32MHz 4 kB 1 2 12 - 1.6 → 3.6 V
RS庫存編號 165-2087
製造零件編號PIC16LF1455-I/ST
BrandMicrochip
TWD46.60
毎管:96 個
單位
- - - - - - - - 1.024 kB - - - - -
RS庫存編號 165-6492
製造零件編號STM32F303VBT6
TWD134.60
Each (In a Tray of 540)
單位
STM32F LQFP Surface Mount 100 ARM Cortex M4 32bit 128 kB 72MHz 8 kB 1 2 39 3 2 → 3.6 V
RS庫存編號 828-3698
製造零件編號R5F52203BDFM#V0
TWD125.50
/個 (每包:2個)
單位
RX LQFP Surface Mount 64 RX 32bit 64 kB 32MHz 8 kB - - 12 1 2.7 → 5.5 V
RS庫存編號 180-7552
製造零件編號PIC16LF18455-I/SS
BrandMicrochip
TWD39.70
毎管:47 個
單位
PIC16LF SSOP Surface Mount 28 - 8bit 14 kB 32MHz 1.024 kB - 1 24 2 3.6 (Maximum) V
RS庫存編號 126-2148
製造零件編號PIC18LF67K40-E/PT
BrandMicrochip
TWD87.50
/個 (每包:2個)
單位
PIC18LF TQFP Surface Mount 64 PIC18 8bit 128 kB 64MHz 3.562 kB - 1 47 - 1.8 → 3.6 V
RS庫存編號 687-8323
製造零件編號PIC24F04KA201-I/P
BrandMicrochip
TWD65.00
單位
PIC24F PDIP Through Hole 20 PIC 16bit 4 kB 32MHz 512 B - 1 9 1 1.8 → 3.6 V
RS庫存編號 165-4842
製造零件編號PIC18F2423-I/ML
BrandMicrochip
TWD138.90
毎管:61 個
單位
PIC18F QFN Surface Mount 28 PIC 8bit 16 kB, 256 B 40MHz 768 B - 2 10 1 4.2 → 5.5 V
RS庫存編號 715-4371
製造零件編號PIC16F1828-I/ML
BrandMicrochip
TWD48.00
單位
PIC16F QFN Surface Mount 20 PIC 8bit 4 kwords 32MHz 512 B - 4 12 1 1.8 → 5.5 V