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
TWD626.00
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
TWD449.80
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. 182-3160
Mfr. Part No.CY8C6137BZI-F34
TWD254.90
Each (In a Tray of 260)
units
PSoC 6 BGA Surface Mount 124 ARM Cortex M4F 32bit 1.024 MB 150MHz 288 kB 1 - 16 9 3.6 (Maximum) V
RS Stock No. 182-3161
Mfr. Part No.CY8C6137BZI-F54
TWD278.00
Each (In a Tray of 260)
units
PSoC 6 BGA Surface Mount 124 ARM Cortex M4F 32bit 1.024 MB 150MHz 288 kB 1 - 16 9 3.6 (Maximum) V
New
RS Stock No. 194-9154
Mfr. Part No.CY8C5668AXI-LP034
TWD593.00
Each
units
CY8C5668AXI TQFP Surface Mount 100 ARM Cortex-M3 32bit 256 kB 67MHz 64 kB 1 1 1 1 1.71 → 5.5 V
RS Stock No. 182-3171
Mfr. Part No.CY8C6337BZI-BLF13
TWD261.70
Each (In a Tray of 364)
units
PSoC 6 BGA Surface Mount 116 ARM Cortex M4F 32bit 1.024 MB 150MHz 288 kB 1 - 16 9 3.6 (Maximum) V
RS Stock No. 179-7776
Mfr. Part No.CY8C6347BZI-BLD53
TWD485.00
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. 182-3162
Mfr. Part No.CY8C6246BZI-D04
TWD266.60
Each (In a Tray of 260)
units
PSoC 6 BGA Surface Mount 124 ARM Cortex M4F 32bit 512 kB 50 MHz, 150 MHz 128 kB 1 - 16 9 3.6 (Maximum) V
RS Stock No. 182-3173
Mfr. Part No.CY8C6247BZI-D34
TWD428.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 179-2317
Mfr. Part No.CY8C24223A-24PVXI
TWD127.90
Each (In a Tube of 66)
units
M8C SSOP Surface Mount 20 PSoC 8bit 4 kB 24MHz 256 B - 2 1 1 5.25 (Maximum) V
New
RS Stock No. 194-9101
Mfr. Part No.CY8C21434-24LQXI
TWD146.40
Each (In a Tray of 490)
units
CY8C21434 QFN Surface Mount 32 - 8bit 8 kB 24MHz 512 B 1 4 28 1 2.4 → 5.25 V
RS Stock No. 177-1211
Mfr. Part No.CY8C4045AZI-S413
TWD129.30
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
New
RS Stock No. 194-9155
Mfr. Part No.CY8C5688AXI-LP099
TWD527.20
Each (In a Tray of 90)
units
CY8C5688AXI TQFP Surface Mount 100 ARM Cortex-M3 32bit 256 kB 80MHz 64 kB 1 1 2 1 1.71 → 5.5 V
New
RS Stock No. 194-9109
Mfr. Part No.CY8C3246AXI-131
TWD250.70
Each (In a Tray of 90)
units
CY8C3246AXI TQFP Surface Mount 100 - 8bit 64 kB 50MHz 8 kB 1 1 1 1 1.71 → 5.5 V
RS Stock No. 184-0713
Mfr. Part No.CY8C6316BZI-BLF53
TWD494.00
Each
units
PSoC 6 BGA Surface Mount 116 ARM Cortex M4F 32bit 512 kB 150MHz 128 kB 1 - 16 9 3.6 (Maximum) V
RS Stock No. 178-3283
Mfr. Part No.CY8C4014LQI-422T
TWD59.00
Each (On a Reel of 2500)
units
CY8C4014 QFN Surface Mount 24 - 32bit 16 kB 16MHz 2 kB - 1 - 1 1.71 → 5.5 V
RS Stock No. 177-1119
Mfr. Part No.CY8C4024LQI-S412
TWD68.10
Each (In a Tray of 490)
units
CY8C4000 QFN Surface Mount 32 ARM Cortex M0 32bit 16 kB 24MHz 2 kB 1 1 1 2 1.8 → 5.5 V
RS Stock No. 177-1184
Mfr. Part No.CY8C4024LQI-S401
TWD85.00
Each (In a Pack of 4)
units
CY8C4000 QFN Surface Mount 24 ARM Cortex M0 32bit 16 kB 24MHz 2 kB 1 1 1 2 1.8 → 5.5 V
RS Stock No. 176-8942
Mfr. Part No.CY8C4127AXI-S445
TWD153.10
Each (In a Tray of 90)
units
CY8C4100 TQFP Surface Mount 64 ARM Cortex M0 32bit 128 kB 24MHz 16 kB - 1 2 5 1.8 → 5.5 V
RS Stock No. 188-5367
Mfr. Part No.CY8C4014SXI-421
TWD68.40
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