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. 176-8982
Mfr. Part No.CY8C4247LQI-BL483
€2.81
Each
units
CY8C4200 QFN Surface Mount 56 ARM Cortex M0 32bit 48 kB 48MHz 16 kB 0 1 1 2 1.8 → 5.5 V
RS Stock No. 124-2964
Mfr. Part No.CY8C4247LQI-BL483
€6.075
Each (In a Pack of 2)
units
PSoC 4 BLE QFN Surface Mount 56 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 0 0 1 - 1.8 → 5.5 V
RS Stock No. 176-8962
Mfr. Part No.CY8C4247LQI-BL483
€2.757
Each (In a Tray of 260)
units
CY8C4200 QFN Surface Mount 56 ARM Cortex M0 32bit 128 kb 48MHz 16 kB 0 1 1 2 1.8 → 5.5 V
RS Stock No. 194-9098
Mfr. Part No.CY8C20336A-24LQXI
€3.395
Each (In a Pack of 2)
units
CY8C20336A QFN Surface Mount 24 - 8bit 8 kB 24MHz 1 kB 1 - 1 1 1.71 → 5.5 V
RS Stock No. 177-1209
Mfr. Part No.CY8C5287AXI-LP095
€8.76
Each
units
CY8C52LP TQFP Surface Mount 100 ARM Cortex M3 32bit 256 kB 80MHz 64 kB 2 1 1 1 1.8 → 5.5 V
RS Stock No. 176-9020
Mfr. Part No.CY8C4146AXI-S455
€2.20
Each
units
CY8C4100 TQFP Surface Mount 64 ARM Cortex M0 32bit 64 kB 48MHz 8 kB 0 1 2 5 1.8 → 5.5 V
RS Stock No. 179-7758
Mfr. Part No.CY8C6347BZI-BLD53
€8.879
Each (In a Tray of 364)
units
PSoC BGA Surface Mount 116 ARM Cortex M4F 32bit 1.024 MB 150MHz 288 kB - - 1 1 3.6 (Maximum) V
RS Stock No. 182-3210
Mfr. Part No.CY8C6136BZI-F14
€3.18
Each (In a Pack of 2)
units
- - - - - - - - - - - - - -
RS Stock No. 177-1211
Mfr. Part No.CY8C4045AZI-S413
€3.457
Each (In a Pack of 3)
units
CY8C4000 TQFP Surface Mount 48 ARM Cortex M0 32bit 32 kB 48MHz 4 kB 1 1 1 2 1.8 → 5.5 V
RS Stock No. 176-9000
Mfr. Part No.CY8C4147AXI-S475
€2.64
Each
units
CY8C4100 TQFP Surface Mount 64 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 0 1 2 5 1.8 → 5.5 V
RS Stock No. 182-3230
Mfr. Part No.CY8C6246BZI-D04
€4.72
Each
units
- - - - - - - - - - - - - -
RS Stock No. 194-9147
Mfr. Part No.CY8C5288LTI-LP090
€5.703
Each (In a Tray of 260)
units
CY8C5288LTI QFN Surface Mount 68 ARM Cortex-M3 32bit 256 kB 80MHz 64 kB 1 1 1 1 1.71 → 5.5 V
RS Stock No. 194-9105
Mfr. Part No.CY8C29866-24AXI
€8.451
Each (In a Tray of 90)
units
CY8C29866 TQFP Surface Mount 100 - 8bit 32 kB 24MHz 2 kB 1 2 1 1 3 → 5.25 V
RS Stock No. 194-9111
Mfr. Part No.CY8C3246LTI-125
€4.64
Each (In a Tray of 260)
units
CY8C3246LTI QFN Surface Mount 48 - 8bit 64 kB 50MHz 8 kB 1 1 1 1 1.71 → 5.5 V
RS Stock No. 177-1220
Mfr. Part No.CY8C4248LQI-BL583
€6.75
Each
units
CY8C4200 QFN Surface Mount 56 ARM Cortex M0 32bit 256 kB 48MHz 32 kB 1 1 1 2 1.8 → 5.5 V
RS Stock No. 194-9047
Mfr. Part No.CY8C4248LQI-BL553
€4.033
Each (In a Tray of 260)
units
CY8C4248LQI QFN Surface Mount 56 ARM Cortex-M0 CPU 32bit 256 kB 48MHz 32 kB - 1 1 1 1.71 → 5.5 V
RS Stock No. 177-1196
Mfr. Part No.CY8C4248AZI-L475
€8.12
Each
units
CY8C4200 TQFP Surface Mount 64 ARM Cortex M0 32bit 256 kB 48MHz 32 kB 2 1 1 4 1.8 → 5.5 V
RS Stock No. 182-3190
Mfr. Part No.CY8C6036BZI-F04
€2.87
Each (In a Pack of 2)
units
- - - - - - - - - - - - - -
RS Stock No. 179-7772
Mfr. Part No.CY8C6347BZI-BLD33
€11.89
Each
units
PSoC BGA Surface Mount 116 ARM Cortex M4F 32bit 1.024 MB 150MHz 288 kB - - 1 1 3.6 (Maximum) V
RS Stock No. 177-1144
Mfr. Part No.CY8C4248AZI-L485
€6.523
Each (In a Tray of 160)
units
CY8C4200 TQFP Surface Mount 64 ARM Cortex M0 32bit 256 kB 48MHz 32 kB 2 1 1 4 1.8 → 5.5 V