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 703-7885
製造零件編號PIC12F1822-I/SN
BrandMicrochip
TWD35.0000
單位
PIC12 SOIC Surface Mount 8 PIC 8bit 2K x 14 words, 256 B 32MHz 128 B - 1 4 1 1.8 → 5.5 V
RS庫存編號 169-8225
製造零件編號Z84C0008PEG
BrandZilog
TWD156.9000
毎管:10 個
單位
Z80 PDIP Through Hole 40 Z8 8bit - 8MHz - - - - - 4.5 → 5.5 V
RS庫存編號 823-4472
製造零件編號PIC16F1503-E/ST
BrandMicrochip
TWD30.3000
/個 (每包:10個)
單位
PIC16F TSSOP Surface Mount 14 PIC 8bit 3.5 kB 20MHz 128 B 1 4 8 1 2.3 → 5.5 V
RS庫存編號 165-6735
製造零件編號STM32F302CBT6
TWD109.5000
Each (In a Tray of 250)
單位
STM32F LQFP Surface Mount 48 ARM Cortex M4 32bit 128 kB 72MHz 32 kB 1 1 8 3 2 → 3.6 V
RS庫存編號 169-8228
製造零件編號Z84C3008PEG
BrandZilog
TWD157.0000
毎管:15 個
單位
Z80 PDIP Through Hole 28 Z8 8bit - 8MHz - - - - - 4.5 → 5.5 V
RS庫存編號 625-8996
製造零件編號Z84C3008PEG
BrandZilog
TWD161.0000
單位
Z80 PDIP Through Hole 28 Z8 8bit - 8MHz - - - - - 4.5 → 5.5 V
RS庫存編號 916-3734
製造零件編號PIC16F18313-I/P
BrandMicrochip
TWD28.5000
/個 (每包:10個)
單位
PIC16F PDIP Through Hole 8 PIC 8bit 3.5 kB 32MHz 256 B - 1 5 - 2.3 → 5.5 V
RS庫存編號 402-279
製造零件編號STM32F103C8T6
TWD162.0000
單位
STM32F LQFP Surface Mount 48 ARM Cortex M3 32bit 64 kB 72MHz 20 kB 1 x Device 1 10 2 2 → 3.6 V
RS庫存編號 625-8918
製造零件編號Z84C0008PEG
BrandZilog
TWD159.0000
單位
Z80 PDIP Through Hole 40 Z8 8bit - 8MHz - - - - - 4.5 → 5.5 V
RS庫存編號 725-7773
製造零件編號LPC2138FBD64/01,15
BrandNXP
TWD393.0000
單位
LPC21 LQFP Surface Mount 64 ARM7TDMI-S 16/32bit 512 kB 60MHz 32 kB - 1 8 2 3 → 3.6 V
RS庫存編號 786-4003
製造零件編號PIC16F1455-I/SL
BrandMicrochip
TWD52.4000
/個 (每包:5個)
單位
PIC16F SOIC Surface Mount 14 PIC 8bit 14 kB 48MHz 1.024 kB 1 1 5 1 2.3 → 5.5 V
RS庫存編號 628-3431
製造零件編號ATMEGA8L-8AU
BrandMicrochip
TWD85.0000
單位
ATmega TQFP Surface Mount 32 AVR 8bit 8 kB, 512 B 8MHz 1 kB - 2 8 1 2.7 → 5.5 V
RS庫存編號 165-4174
製造零件編號PIC16F18313-I/P
BrandMicrochip
TWD26.5000
毎管:60 個
單位
PIC16F PDIP Through Hole 8 PIC 8bit 3.5 kB 32MHz 256 B - 1 5 - 2.3 → 5.5 V
RS庫存編號 165-1997
製造零件編號PIC16F1503-E/ST
BrandMicrochip
TWD27.6000
毎管:96 個
單位
PIC16F TSSOP Surface Mount 14 PIC 8bit 3.5 kB 20MHz 128 B 1 4 8 1 2.3 → 5.5 V
RS庫存編號 819-0735
製造零件編號PIC18F45K80T-I/PT
BrandMicrochip
TWD85.9000
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 102-3541
製造零件編號STM32F103CBT6
TWD145.4000
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 912-2991
製造零件編號PIC12F1501-I/P
BrandMicrochip
TWD21.7000
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 719-3972
製造零件編號ATMEGA644PA-PU
BrandMicrochip
TWD192.0000
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 402-273
製造零件編號STM32F103CBT6
TWD174.0000
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 761-7517
製造零件編號PIC12F1501-I/P
BrandMicrochip
TWD24.0000
/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