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. 188-5381
Mfr. Part No.CY8C5888LTI-LP097
MYR52.361
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. 124-2972
Mfr. Part No.CY8C5888LTI-LP097
MYR64.04
Each
units
CY8C58LP QFN Surface Mount 68 ARM Cortex M3 32bit 256 kB 80MHz 64 kB 1 0 3 - 1.8 V, 2.5 V, 3.3 V, 5 V
RS Stock No. 176-8982
Mfr. Part No.CY8C4247LQI-BL483
MYR28.16
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. 124-2960
Mfr. Part No.CY8C4014SXI-421
MYR9.65
Each (In a Pack of 5)
units
PSoC 4000 SOIC Surface Mount 16 ARM Cortex M0 32bit 16 kB 16MHz 2 kB 0 0 - - 3.3 V
RS Stock No. 188-5367
Mfr. Part No.CY8C4014SXI-421
MYR7.923
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. 176-8962
Mfr. Part No.CY8C4247LQI-BL483
MYR18.98
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. 124-2964
Mfr. Part No.CY8C4247LQI-BL483
MYR28.155
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. 182-3213
Mfr. Part No.CY8C6337BZI-BLF13
MYR47.85
Each
units
- - - - - - - - - - - - - -
RS Stock No. 182-3152
Mfr. Part No.CY8C6016BZI-F04
MYR26.112
Each (In a Tray of 260)
units
PSoC 6 BGA Surface Mount 124 ARM Cortex M4F 32bit 512 kB 50MHz 128 kB 1 - 16 9 3.6 (Maximum) V
RS Stock No. 188-5370
Mfr. Part No.CY8C4125PVI-482
MYR10.14
Each (In a Tube of 47)
units
PSoC 4100 SSOP Surface Mount 28 ARM Cortex M0 32bit 32 kB 24MHz 4 kB - - 1 2 1.8 → 5.5 V
RS Stock No. 177-1196
Mfr. Part No.CY8C4248AZI-L475
MYR39.42
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. 194-9122
Mfr. Part No.CY8C3866AXI-039
MYR65.76
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. 194-9150
Mfr. Part No.CY8C5666AXI-LP004
MYR51.09
Each
units
CY8C5666AXI TQFP Surface Mount 100 ARM Cortex-M3 32bit 64 kB 67MHz 16 kB 1 1 1 1 1.71 → 5.5 V
RS Stock No. 177-1138
Mfr. Part No.CY8C4247AZI-L485
MYR27.49
Each (In a Tray of 160)
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. 177-1127
Mfr. Part No.CY8C4127LQI-BL473
MYR13.737
Each (In a Tray of 260)
units
CY8C4100 QFN Surface Mount 56 ARM Cortex M0 32bit 128 kB 24MHz 16 kB 1 1 1 2 1.8 → 5.5 V
RS Stock No. 188-5353
Mfr. Part No.CY8C21534-24PVXI
MYR16.345
Each (In a Tube of 47)
units
CY8C21434 SSOP Surface Mount 28 CPU 8bit 8 kB 24MHz 512 kB - - 28 1 2.4 → 5.25 V
RS Stock No. 194-9131
Mfr. Part No.CY8C4025LQI-S411
MYR8.425
Each (In a Tray of 490)
units
CY8C4025LQI QFN Surface Mount 24 - 32bit 32 kB 24MHz 4 kB - 1 1 1 1.71 → 5.5 V
RS Stock No. 194-9124
Mfr. Part No.CY8C4014PVI-422
MYR13.22
Each (In a Pack of 5)
units
CY8C4014PVI SSOP Surface Mount 28 ARM Cortex-M0 CPU 32bit 16 kB 16MHz 2 kB - 1 - - 1.71 → 5.5 V
RS Stock No. 177-1182
Mfr. Part No.CY8C4247AZI-M485
MYR29.91
Each
units
CY8C4200 TQFP Surface Mount 64 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 1 1 1 4 1.8 → 5.5 V
RS Stock No. 176-8954
Mfr. Part No.CY8C4147AXI-S475
MYR22.14
Each (In a Tray of 90)
units
CY8C4100 TQFP Surface Mount 64 ARM Cortex M0 32bit 128 kB 48MHz 16 kB 0 1 2 5 1.8 → 5.5 V