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 526-8986
製造零件編號C8051F020-GQ
HK$160.91
單位
C8051F TQFP Surface Mount 100 8051 8bit 64 kB 25MHz 4.352 kB - 5 8 1 2.7 3.6 V
RS庫存編號 168-9818
製造零件編號C8051F020-GQ
HK$157.347
Each (In a Tray of 90)
單位
C8051F TQFP Surface Mount 100 8051 8bit 64 kB 25MHz 4.352 kB - 5 8 1 2.7 3.6 V
RS庫存編號 865-6263
製造零件編號EFM8BB10F2G-A-QFN20
HK$3.02
/個 (每包:30個)
單位
EFM8BB QFN Surface Mount 20 CIP-51 8bit 2 kB 25MHz 256 B - - 15 1 2.2 3.6 V
RS庫存編號 169-0180
製造零件編號EFM8BB10F2G-A-QFN20
HK$2.95
毎管:120 個
單位
EFM8BB QFN Surface Mount 20 CIP-51 8bit 2 kB 25MHz 256 B - - 15 1 2.2 3.6 V
RS庫存編號 168-9815
製造零件編號C8051F023-GQ
HK$111.68
Each (In a Tray of 160)
單位
C8051F TQFP Surface Mount 64 8051 8bit 64 kB 25MHz 4.352 kB - 5 8 1 2.7 3.6 V
RS庫存編號 526-8936
製造零件編號C8051F023-GQ
HK$103.39
單位
C8051F TQFP Surface Mount 64 8051 8bit 64 kB 25MHz 4.352 kB - 5 8 1 2.7 3.6 V
RS庫存編號 168-9805
製造零件編號C8051F320-GQ
HK$54.642
Each (In a Tray of 250)
單位
C8051F LQFP Surface Mount 32 8051 8bit 16 kB 25MHz 2.304 kB 1 x Device 5 17 1 2.7 3.6 V
RS庫存編號 526-8857
製造零件編號C8051F320-GQ
HK$51.59
單位
C8051F LQFP Surface Mount 32 8051 8bit 16 kB 25MHz 2.304 kB 1 x Device 5 17 1 2.7 3.6 V
RS庫存編號 819-6815
製造零件編號C8051F413-GM
HK$41.16
/個 (每包:2個)
單位
C8051F QFN Surface Mount 28 8051 8bit 16 kB 50MHz 2.304 kB - 1 20 1 2.15 5.25 V
RS庫存編號 819-6819
製造零件編號C8051F587-IM
HK$61.975
/個 (每包:2個)
單位
C8051F QFN Surface Mount 32 8051 8bit 96 kB 50MHz 8 kB - 1 25 1 1.8 5.25 V
RS庫存編號 790-4154
製造零件編號EFM32ZG210F32-QFN32
HK$11.55
/個 (每包:5個)
單位
EFM32ZG TQFN Surface Mount 32 ARM Cortex M0+ 32bit 32 kB 24MHz 4 kB - 2 4 1 1.85 3.8 V
RS庫存編號 169-0030
製造零件編號C8051F047-GQ
HK$66.17
Each (In a Tray of 160)
單位
C8051F TQFP Surface Mount 64 8051 8bit 32 kB 25MHz 4.352 kB - 1 13 1 3 V
RS庫存編號 168-9914
製造零件編號C8051F582-IM
HK$62.64
毎管:73 個
單位
C8051F QFN Surface Mount 32 8051 8bit 128 kB 24MHz 8.448 kB - 4 32 1 1.8 5.25 V
RS庫存編號 144-9641
製造零件編號EFM8BB31F32I-B-4QFN24
HK$7.19
/個 (每包:5個)
單位
EFM8BB3 QFN Surface Mount 24 CIP-51 8bit 32 kB 50MHz 2.304 kB - 1 12 1 2.2 → 3.6 V
RS庫存編號 169-0041
製造零件編號C8051F345-GQ
HK$66.319
Each (In a Tray of 250)
單位
C8051F TQFP Surface Mount 48 8051 8bit 32 kB 25MHz 2.304 kB 1 1 20 1 3.3 V
RS庫存編號 168-9915
製造零件編號C8051F582-IQ
HK$56.439
Each (In a Tray of 250)
單位
C8051F QFP Surface Mount 32 8051 8bit 128 kB 24MHz 8.448 kB - 4 32 1 1.8 5.25 V
RS庫存編號 146-1828
製造零件編號EFM8BB31F32I-B-QFN24
HK$8.691
毎管:120 個
單位
EFM8BB3 QFN Surface Mount 24 - 8bit 32 kB 50MHz 2.304 kB - - 12 - 2.2 3.6 V
RS庫存編號 144-9654
製造零件編號EFM8BB31F64I-B-5QFN32
HK$13.04
/個 (每包:5個)
單位
EFM8BB3 QFN Surface Mount 32 CIP-51 8bit 64 kB 50MHz 4.352 kB - 1 20 1 2.2 → 3.6 V
RS庫存編號 761-7876
製造零件編號SIM3U157-B-GM
HK$62.12
單位
SiM3 LGA Surface Mount 92 ARM Cortex M3 32bit 128 kB 80MHz 32 kB 1 1 2 3 1.8 3.6 V
RS庫存編號 169-0031
製造零件編號C8051F132-GQ
HK$115.71
Each (In a Tray of 90)
單位
C8051F TQFP Surface Mount 100 8051 8bit 64 kB 100MHz 8.448 kB - 1 8 1 3.3 V