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 Stock No. 914-0087
Mfr. Part No.XMC1302T038X0064AAXUMA1
BrandInfineon
HK$13.954
Each (In a Pack of 5)
units
XMC1000 TSSOP Surface Mount 38 ARM Cortex M0 32bit 64 kB 66.4MHz 16 kB - - 16 - 1.8 → 5.5 V
RS Stock No. 165-8226
Mfr. Part No.XMC4800F100K2048AAXQMA1
BrandInfineon
HK$185.601
Each (In a Tray of 540)
units
XMC4000 LQFP Surface Mount 100 ARM Cortex M4 32bit 2.048 MB 144MHz 352 kB 1 - 8 - 1.3 V, 3.3 V
RS Stock No. 917-3413
Mfr. Part No.XMC4800F100K2048AAXQMA1
BrandInfineon
HK$195.96
Each
units
XMC4000 LQFP Surface Mount 100 ARM Cortex M4 32bit 2.048 MB 144MHz 352 kB 1 - 8 - 1.3 V, 3.3 V
RS Stock No. 917-3425
Mfr. Part No.XMC4800E196K2048AAXQMA1
BrandInfineon
HK$208.88
Each
units
XMC4000 LFBGA Surface Mount 196 ARM Cortex M4 32bit 2.048 MB 144MHz 352 kB 1 - 8 - 1.3 V, 3.3 V
RS Stock No. 165-8043
Mfr. Part No.XMC1100T016X0064ABXUMA1
BrandInfineon
HK$13.503
Each (On a Reel of 3000)
units
XMC1100 TSSOP Surface Mount 16 ARM Cortex M0 32bit 64 kB 32MHz 16 kB - - 6 - 1.8 → 5.5 V
RS Stock No. 110-7117
Mfr. Part No.XE164FM72F80LRABKXUMA1
BrandInfineon
HK$88.70
Each
units
XE166 LQFP Surface Mount 100 C166 16bit - 80MHz - - - 16 - 1.4 → 1.6 V
RS Stock No. 165-8192
Mfr. Part No.XMC4700F144K2048AAXQMA1
BrandInfineon
HK$126.008
Each (In a Tray of 360)
units
XMC4000 LQFP Surface Mount 144 ARM Cortex M4 32bit 2.048 MB 144MHz 352 kB 1 - 8 - 1.3 V, 3.3 V
RS Stock No. 124-1095
Mfr. Part No.XMC1404F064X0200AAXUMA1
BrandInfineon
HK$27.82
Each
units
XMC1000 LQFP Surface Mount 64 Cortex-M0 32bit 200 kB 48MHz 16 kB - - 12 - 1.8 → 5.5 V
RS Stock No. 165-8088
Mfr. Part No.XMC1301T038F0032ABXUMA1
BrandInfineon
HK$11.715
Each (On a Reel of 3000)
units
XMC1000 TSSOP Surface Mount 38 ARM Cortex M0 32bit 32 kB 66.4MHz 16 kB - - 16 - 1.8 → 5.5 V
RS Stock No. 110-7162
Mfr. Part No.XE167FM72F80LRABKXUMA1
BrandInfineon
HK$92.40
Each
units
XE166 LQFP Surface Mount 144 C166 16bit 576 kB 100MHz 16 (DSRAM) kB, 32 (PSRAM) kB - - 34 - 1.5 V
RS Stock No. 165-5854
Mfr. Part No.XMC4500F100K1024ACXQSA1
BrandInfineon
HK$83.09
Each (In a Tray of 90)
units
XMC4000 LQFP Surface Mount 100 ARM Cortex M4 32bit 1.024 MB 120MHz 160 kB 1 - 24 2 3.3 V
RS Stock No. 166-0791
Mfr. Part No.XMC4500E144X1024ACXQSA1
BrandInfineon
HK$101.739
Each (In a Tray of 240)
units
XMC4000 LFBGA Surface Mount 144 ARM Cortex M4 32bit 1.024 MB 120MHz 160 kB - - 32 - 1.3 (Core) V, 3.3 (Digital) V
RS Stock No. 166-0857
Mfr. Part No.XC8664FRIBEFXUMA1
BrandInfineon
HK$17.274
Each (On a Reel of 1000)
units
XC866 TSSOP Surface Mount 38 8051 8bit 4 kB, 12 kB 26.7MHz 256 B, 512 B - 1 8 - 4.5 → 5.5 V
RS Stock No. 165-8223
Mfr. Part No.XMC4400F100K512ABXQSA1
BrandInfineon
HK$72.571
Each (In a Tray of 90)
units
XMC4000 LQFP Surface Mount 100 ARM Cortex M4 32bit 512 kB 120MHz 80 kB 1 - 24 - 1.3 V, 3.3 V
RS Stock No. 917-3419
Mfr. Part No.XMC4700E196K2048AAXQMA1
BrandInfineon
HK$138.11
Each
units
XMC4000 LFBGA Surface Mount 196 ARM Cortex M4 32bit 2.048 MB 144MHz 352 kB 1 - 8 - 1.3 V, 3.3 V
RS Stock No. 917-3416
Mfr. Part No.XMC4700F144K2048AAXQMA1
BrandInfineon
HK$131.61
Each
units
XMC4000 LQFP Surface Mount 144 ARM Cortex M4 32bit 2.048 MB 144MHz 352 kB 1 - 8 - 1.3 V, 3.3 V
RS Stock No. 110-7184
Mfr. Part No.XE164F96F80LACFXUMA1
BrandInfineon
HK$105.40
Each
units
XE166 LQFP Surface Mount 100 C166 16bit 768 kB 80MHz 64 kB - - 16 - 1.4 → 1.6 V
RS Stock No. 166-0917
Mfr. Part No.XE167F96F80LACFXUMA1
BrandInfineon
HK$96.823
Each (On a Reel of 1000)
units
XC166 LQFP Surface Mount 144 C166S V2 16bit 768 kB 80MHz 64 (PSRAM) kB - - 24 - 3 → 5.5 V
RS Stock No. 124-1097
Mfr. Part No.XMC4100F64F128BAXQMA1
BrandInfineon
HK$37.24
Each
units
XMC4000 TQFP Surface Mount 64 Cortex M4 32bit 128 kB 80MHz 20 kB 1 - 10 - 3.3 V
RS Stock No. 166-0919
Mfr. Part No.XC161CJ16F40FBBKXUMA1
BrandInfineon
HK$193.991
Each (On a Reel of 1000)
units
XC166 TQFP Surface Mount 144 C166S V2 16bit 128 kB 20MHz 2 (DPRAM) kB, 2 (PSRAM) kB, 4 (DSRAM) kB - - 12 - 2.35 → 2.7 (Core) V, 4.4 → 5.5 (I/O) V