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. 124-2972
Mfr. Part No.CY8C5888LTI-LP097
TWD585.00
Each
units
CY8C58LP QFN Surface Mount 68 ARM Cortex M3 32bit 256 kB 80MHz 64 kB 1 - 3 - 1.8 V, 2.5 V, 3.3 V, 5 V
RS Stock No. 188-5381
Mfr. Part No.CY8C5888LTI-LP097
TWD399.00
Each (In a Tray of 260)
units
CY8C58LP QFN Surface Mount 68 ARM Cortex-M3 32bit 256 kB 67MHz 64 kB 1 - 3 - 1.8 → 5.5 V
RS Stock No. 177-1177
Mfr. Part No.CY8C4247AZI-L485
TWD307.00
Each
units
CY8C4200 TQFP Surface Mount 64 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 2 1 1 4 1.8 → 5.5 V
RS Stock No. 188-5367
Mfr. Part No.CY8C4014SXI-421
TWD63.90
Each (In a Tube of 48)
units
PSoC 4000 SOIC Surface Mount 16 ARM Cortex M0 32bit 16 kB 16MHz 2 kB - - - - 1.8 → 5.5 V
RS Stock No. 194-9132
Mfr. Part No.CY8C4025LQI-S411
TWD99.80
Each (In a Pack of 5)
units
CY8C4025LQI QFN Surface Mount 24 - 32bit 32 kB 24MHz 4 kB - 1 1 1 1.71 → 5.5 V
RS Stock No. 194-9122
Mfr. Part No.CY8C3866AXI-039
TWD535.00
Each
units
CY8C3866AXI TQFP Surface Mount 100 - 8bit 64 kB 67MHz 8 kB 1 1 1 1 1.71 → 5.5 V
RS Stock No. 188-5352
Mfr. Part No.CY8C21434-24LTXI
TWD114.40
Each (In a Tray of 490)
units
CY8C21434 QFN Surface Mount 32 CPU 8bit 8 kB 24MHz 512 kB - - 28 1 2.4 → 5.25 V
RS Stock No. 176-8982
Mfr. Part No.CY8C4247LQI-BL483
TWD229.00
Each
units
CY8C4200 QFN Surface Mount 56 ARM Cortex M0 32bit 48 kB 48MHz 16 kB - 1 1 2 1.8 → 5.5 V
RS Stock No. 194-9136
Mfr. Part No.CY8C4124LQI-S432
TWD128.00
Each (In a Pack of 2)
units
CY8C4124LQI QFN Surface Mount 32 - 32bit 16 kB 24MHz 4 kB - 1 2 1 1.71 → 5.5 V
RS Stock No. 177-1187
Mfr. Part No.CY8C4247LQI-BL473
TWD217.00
Each (In a Pack of 2)
units
CY8C4200 QFN Surface Mount 56 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 1 1 1 2 1.8 → 5.5 V
RS Stock No. 188-5368
Mfr. Part No.CY8C4124PVI-442
TWD78.20
Each (In a Tube of 47)
units
PSoC 4100 SSOP Surface Mount 28 ARM Cortex M0 32bit 16 kB 24MHz 4 kB - - 1 2 1.8 → 5.5 V
RS Stock No. 181-3777
Mfr. Part No.CY8C4745AZI-S413
TWD213.50
Each (In a Pack of 2)
units
PSoC 4700 TQFP Surface Mount 48 ARM Cortex M0 32bit 32 kB 48MHz 4 kB - 1 1 1 1.71 → 5.5 V
RS Stock No. 177-1241
Mfr. Part No.CY8C4146LQI-S433
TWD164.50
Each (In a Pack of 2)
units
CY8C4100 QFN Surface Mount 40 ARM Cortex M0 32bit 64 kB 48MHz 8 kB 1 1 2 2 1.8 → 5.5 V
RS Stock No. 182-3155
Mfr. Part No.CY8C6117BZI-F34
TWD273.10
Each (In a Tray of 260)
units
PSoC 6 BGA Surface Mount 124 ARM Cortex M4F 32bit 1.024 MB 50MHz 288 kB 1 - 16 9 3.6 (Maximum) V
RS Stock No. 176-8952
Mfr. Part No.CY8C4147AXI-S455
TWD184.60
Each (In a Tray of 90)
units
CY8C4100 TQFP Surface Mount 64 ARM Cortex M0 32bit 128 kB 48MHz 16 kB - 1 2 5 1.8 → 5.5 V
RS Stock No. 179-7757
Mfr. Part No.CY8C6347BZI-BLD43
TWD313.10
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. 177-1131
Mfr. Part No.CY8C4146LQI-S433
TWD105.30
Each (In a Tray of 490)
units
CY8C4100 QFN Surface Mount 40 ARM Cortex M0 32bit 64 kB 48MHz 8 kB 1 1 2 2 1.8 → 5.5 V
RS Stock No. 188-5377
Mfr. Part No.CY8C5868AXI-LP035
TWD537.70
Each (In a Tray of 90)
units
CY8C58LP TQFP Surface Mount 100 ARM Cortex-M3 32bit 256 kB 67MHz 64 kB 1 - 3 - 1.8 → 5.5 V
RS Stock No. 177-1200
Mfr. Part No.CY8C4248AZI-L485
TWD333.00
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. 182-3203
Mfr. Part No.CY8C6117BZI-F34
TWD402.00
Each
units
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