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 123-7190
製造零件編號C167CRLMHAKXQLA2
BrandInfineon
HK$126.53
單位
C166 P-MQFP-144-8 Surface Mount 144 C166 16bit - 25MHz 2 kB - 1 16 - 4.5 → 5.5 V
RS庫存編號 166-1175
製造零件編號C167CRLMHAKXQLA2
BrandInfineon
HK$125.43
Each (In a Tray of 168)
單位
C166 P-MQFP-144-8 Surface Mount 144 C166 16bit - 25MHz 2 kB - 1 16 - 4.5 → 5.5 V
RS庫存編號 795-7543
製造零件編號STM8L051F3P6
HK$7.856
/個 (每包:10個)
單位
STM8L TSSOP Surface Mount 20 STM8 8bit 8 kB 16MHz 1 kB - 1 10 1 3.6 V
RS庫存編號 168-7233
製造零件編號STM8L051F3P6
HK$7.531
毎管:74 個
單位
STM8L TSSOP Surface Mount 20 STM8 8bit 8 kB 16MHz 1 kB - 1 10 1 3.6 V
RS庫存編號 821-0788
製造零件編號PIC18LF4620-I/PT
BrandMicrochip
HK$51.80
/個 (每包:160個)
單位
PIC18F TQFP Surface Mount 44 PIC 8bit 64 kB 40MHz 3.968 kB - 2 13 1 2 → 5.5 V
RS庫存編號 902-8221
製造零件編號R5F72375ADFP#V0
HK$126.73
單位
SuperH LQFP Surface Mount 120 SH-2A 32bit 32 (Flash) kB, 512 (ROM) kB 160MHz 64 kB - - 16 - 3 → 3.6 V
RS庫存編號 921-4545
製造零件編號ATMEGA328P-PU
BrandMicrochip
HK$23.899
毎管:14 個
單位
ATmega PDIP Through Hole 28 AVR 8bit 1 kB, 32 kB 20MHz 2 kB - 3 6 1 1.8 → 5.5 V
RS庫存編號 400-504
製造零件編號PIC18F2523-I/SP
BrandMicrochip
HK$42.90
單位
PIC18F SPDIP Through Hole 28 PIC 8bit 32 kB, 256 B 40MHz 1.536 kB - 2 10 1 4.2 to 5.5 V
RS庫存編號 876-6884
製造零件編號PIC18F2523-I/SP
BrandMicrochip
HK$41.288
毎管:15 個
單位
PIC18F SPDIP Through Hole 28 PIC 8bit 32 kB 40MHz 1.536 kB - 2 10 1 2 to 5.5 V
RS庫存編號 775-3903
製造零件編號R7F0C80112ESP#AA0
HK$1.933
/個 (每包:25個)
單位
R7F0C80 LSSOP Surface Mount 10 RL78-S1 8bit 1 kB 5MHz 128 B - - 4 1 2.4 → 5.5 V
RS庫存編號 887-7145
製造零件編號PIC18F4620-I/PT
BrandMicrochip
HK$46.041
Each (In a Tray of 160)
單位
PIC18F TQFP Surface Mount 44 PIC 8bit 1.024 kB, 64 kB 40MHz 3.986 kB - 2 13 1 4.2 → 5.5 V
RS庫存編號 761-7510
製造零件編號PIC16F1509-I/SO
BrandMicrochip
HK$11.02
/個 (每包:3個)
單位
PIC16F SOIC Surface Mount 20 PIC 8bit 8192 words 20MHz 512 B - 4 12 1 2.3 → 5.5 V
RS庫存編號 165-4881
製造零件編號PIC16F874-04/PT
BrandMicrochip
HK$58.13
Each (In a Tray of 160)
單位
PIC16F TQFP Surface Mount 44 PIC 8bit 4K x 14 words, 128 x 8 words 4MHz 192 B - 2 8 1 4 → 5.5 V
RS庫存編號 757-8184
製造零件編號R5F56218BDFB#V0
HK$84.49
單位
RX600 LFQFP Surface Mount 144 RX 32bit 512 kB 100MHz 96 kB 2 1 12 2 2.7 → 3.6 V
RS庫存編號 901-6192
製造零件編號R5F56218BDFB#V0
HK$80.70
單位
RX600 LFQFP Surface Mount 144 RX 32bit 512 kB 100MHz 96 kB 2 1 12 2 2.7 → 3.6 V
RS庫存編號 899-6928
製造零件編號ATXMEGA64A3U-AU
BrandMicrochip
HK$34.04
/個 (每包:2個)
單位
ATxmega TQFP Surface Mount 64 AVR 64bit 68 kB 32MHz 4 kB 1 7 16 - 1.6 → 3.6 V
RS庫存編號 402-279
製造零件編號STM32F103C8T6
HK$50.97
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 791-8144
製造零件編號LPC11U35FHI33/501,
BrandNXP
HK$31.785
/個 (每包:2個)
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 165-8146
製造零件編號STM32F410RBT6
HK$21.349
Each (In a Tray of 160)
單位
STM32 LQFP Surface Mount 64 ARM Cortex M4 32bit 128 kB 100MHz 32 kB - - 16 - 1.7 → 3.6 V
RS庫存編號 681-1171
製造零件編號PIC18F4620-I/PT
BrandMicrochip
HK$49.17
單位
PIC18F TQFP Surface Mount 44 PIC 8bit 1.024 kB, 64 kB 40MHz 3.986 kB - 2 13 1 4.2 → 5.5 V