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. 914-0084
Mfr. Part No.XMC1301T038F0032ABXUMA1
BrandInfineon
PHP66.872
Each (In a Pack of 5)
units
XMC1000 TSSOP Surface Mount 38 ARM Cortex M0 32bit 32 kB 66.4MHz 16 kB 0 - 16 - 1.8 → 5.5 V
RS Stock No. 165-8088
Mfr. Part No.XMC1301T038F0032ABXUMA1
BrandInfineon
PHP72.611
Each (On a Reel of 3000)
units
XMC1000 TSSOP Surface Mount 38 ARM Cortex M0 32bit 32 kB 66.4MHz 16 kB 0 - 16 - 1.8 → 5.5 V
RS Stock No. 165-8224
Mfr. Part No.XMC4500F100K1024ACXQSA1
BrandInfineon
PHP496.842
Each (In a Tray of 90)
units
XMC4000 LQFP Surface Mount 100 ARM Cortex M4 32bit 1.024 MB 120MHz 160 kB 1 - 24 - 1.3 V, 3.3 V
RS Stock No. 914-0069
Mfr. Part No.XMC4500F100K1024ACXQSA1
BrandInfineon
PHP576.75
Each
units
XMC4000 LQFP Surface Mount 100 ARM Cortex M4 32bit 1.024 MB 120MHz 160 kB 1 - 24 - 1.3 V, 3.3 V
RS Stock No. 914-0087
Mfr. Part No.XMC1302T038X0064AAXUMA1
BrandInfineon
PHP90.952
Each (In a Pack of 5)
units
XMC1000 TSSOP Surface Mount 38 ARM Cortex M0 32bit 64 kB 66.4MHz 16 kB 0 - 16 - 1.8 → 5.5 V
RS Stock No. 752-8423
Mfr. Part No.XE167F96F66LACFXUMA1
BrandInfineon
PHP575.83
Each
units
XE166 LQFP Surface Mount 144 C166S V2 16 bit, 32 bit 768 kB 66MHz 82 kB 0 3 24 6 3 to 5.5 V
RS Stock No. 165-8058
Mfr. Part No.XMC1100T016F0064ABXUMA1
BrandInfineon
PHP80.244
Each (On a Reel of 3000)
units
XMC1000 TSSOP Surface Mount 16 ARM Cortex M0 32bit 64 kB 66.4MHz 16 kB 0 - 6 - 1.8 → 5.5 V
RS Stock No. 110-7493
Mfr. Part No.XMC4500E144X1024ACXQSA1
BrandInfineon
PHP580.33
Each
units
XMC4000 LFBGA Surface Mount 144 ARM Cortex M4 32bit 1.024 MB 120MHz 160 kB 0 0 32 - 1.3 (Core) V, 3.3 (Digital) V
RS Stock No. 919-8834
Mfr. Part No.C515C8EMCAFXQMA1
BrandInfineon
PHP773.095
Each (In a Tray of 504)
units
C515C MQFP Surface Mount 80 8051 8bit 64 kB 10MHz 2.25 kB 0 4 8 1 4.25 → 5.5 V
RS Stock No. 752-8417
Mfr. Part No.C515C8EMCAFXQMA1
BrandInfineon
PHP953.73
Each
units
C515C MQFP Surface Mount 80 8051 8bit 64 kB 10MHz 2.25 kB 0 4 8 1 4.25 → 5.5 V
RS Stock No. 166-0791
Mfr. Part No.XMC4500E144X1024ACXQSA1
BrandInfineon
PHP623.751
Each (In a Tray of 240)
units
XMC4000 LFBGA Surface Mount 144 ARM Cortex M4 32bit 1.024 MB 120MHz 160 kB 0 0 32 - 1.3 (Core) V, 3.3 (Digital) V
RS Stock No. 124-1095
Mfr. Part No.XMC1404F064X0200AAXUMA1
BrandInfineon
PHP574.38
Each
units
XMC1000 LQFP Surface Mount 64 Cortex-M0 32bit 200 kB 48MHz 16 kB 0 0 12 - 1.8 → 5.5 V
RS Stock No. 914-0078
Mfr. Part No.XMC1100T016F0064ABXUMA1
BrandInfineon
PHP91.76
Each (In a Pack of 6)
units
XMC1000 TSSOP Surface Mount 16 ARM Cortex M0 32bit 64 kB 66.4MHz 16 kB 0 - 6 - 1.8 → 5.5 V
RS Stock No. 166-0843
Mfr. Part No.XC167CI32F40FBBAKXQMA1
BrandInfineon
PHP1,455.068
Each (In a Tray of 360)
units
XC166 TQFP Surface Mount 144 C166S V2 16bit 256 kB 20MHz 2 (DPRAM) kB, 4 (DSRAM) kB, 6 (PSRAM) kB 0 0 16 - 2.35 → 2.7 (Core) V, 4.4 → 5.5 (I/O) V
RS Stock No. 166-0857
Mfr. Part No.XC8664FRIBEFXUMA1
BrandInfineon
PHP107.062
Each (On a Reel of 1000)
units
XC866 TSSOP Surface Mount 38 8051 8bit 4 kB, 12 kB 26.7MHz 256 B, 512 B 0 1 8 0 4.5 → 5.5 V
RS Stock No. 917-3419
Mfr. Part No.XMC4700E196K2048AAXQMA1
BrandInfineon
PHP818.60
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. 752-8432
Mfr. Part No.C164CI8EMCBKXQMA1
BrandInfineon
PHP1,172.57
Each
units
C166 MQFP Surface Mount 80 C166 16bit 64 kB 20MHz 4 kB 0 2 8 1 2.5 → 5.5 V, 4.75 → 5.5 V
RS Stock No. 124-1097
Mfr. Part No.XMC4100F64F128BAXQMA1
BrandInfineon
PHP1,559.00
Each
units
XMC4000 TQFP Surface Mount 64 Cortex M4 32bit 128 kB 80MHz 20 kB 1 0 10 - 3.3 V
RS Stock No. 110-7769
Mfr. Part No.XC167CI32F40FBBAKXQMA1
BrandInfineon
PHP1,336.65
Each
units
XC166 TQFP Surface Mount 144 C166S V2 16bit 256 kB 20MHz 2 (DPRAM) kB, 4 (DSRAM) kB, 6 (PSRAM) kB 0 0 16 - 2.35 → 2.7 (Core) V, 4.4 → 5.5 (I/O) V
RS Stock No. 914-0062
Mfr. Part No.XMC4400F100K512ABXQSA1
BrandInfineon
PHP537.03
Each
units
XMC4000 LQFP Surface Mount 100 ARM Cortex M4 32bit 512 kB 120MHz 80 kB 1 - 24 - 1.3 V, 3.3 V