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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. Learn more in our microcontrollers guide.

What are Microcontrollers made up of?

Microcontrollers contain single or multiple processors, 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 available for Microcontrollers?

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?

MCUs can be found in many technologies and any electronic device containing a sensor, a display, a user interface and a programmable output control or actuator is likely to feature an MCU. They can be found in the following areas:

Computers
Automotive
Robotics
Automation
Medical equipment
Home appliances
IoT devices

11454 Products showing for Microcontrollers

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In Stock STMicroelectronics STM32G031K8U3TR, 32 bit ARM Cortex M0+, STM32G031x4/x6/x8 Microcontroller, 64 MHz, 64kB FLASH, 32-Pin RS stock no. 330-251 Mfr. Part No. STM32G031K8U3TR Subtotal (1 unit) R 25,00(exc. VAT) R 25,00/unit Quantity	STMicroelectronics	-	Microcontroller	STM32G031x4/x6/x8	UFQFPN	Surface	-	32	ARM Cortex M0+	32bit	-	64kB	2 x 12 Bit	64MHz	-	8kB	3.6V	-	2	-	-	-40°C	-	44	125°C	7mm	6.4mm	-	ECOPACK 2	6.5mm	1.7V	-	-	-	-	-
Currently unavailable STMicroelectronics STM32WBA63CGU7, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 1MB FLASH, 48-Pin RS stock no. 330-277 Mfr. Part No. STM32WBA63CGU7 Subtotal (1 unit) R 88,15(exc. VAT) R 88,15/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	UFQFPN	Surface	-	48	ARM Cortex M33	32bit	-	1MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.78mm	5mm	-	FCC CFR47 part 15, ETSI EN 300 328, EN 300 440, ARIB STD-T66	7mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32C051F6P6 ARM Cortex, STM32C051 Microcontroller, 48 MHz, 32kB FLASH, 20-Pin TSSOP RS stock no. 315-748 Mfr. Part No. STM32C051F6P6 Subtotal (1 unit) R 117,20(exc. VAT) R 117,20/unit Quantity	STMicroelectronics	-	Microcontroller	STM32C051	TSSOP	-	-	20	ARM Cortex	-	-	32kB	-	48MHz	-	-	3.6V	-	-	-	-	-40°C	-	48	85°C	6.5mm	-	-	No	4.4mm	2V	-	-	-	-	-
In Stock STMicroelectronics STM32H523VCI7TR, 16 bit ARM Cortex M33, STM32H523xx Microcontroller, 250 MHz, 256kB FLASH, 144-Pin RS stock no. 330-267 Mfr. Part No. STM32H523VCI7TR Subtotal (1 unit) R 62,61(exc. VAT) R 62,61/unit Quantity	STMicroelectronics	-	Microcontroller	STM32H523xx	UFBGA	Surface	-	144	ARM Cortex M33	16bit	-	256kB	2 x 12 Bit	250MHz	-	272kB	3.6V	-	1	-	-	-40°C	-	112	105°C	2.78mm	5.3mm	-	SESIP3 and PSA Level 3 Certified assurance target	9mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32C091ECY6TR ARM 32 Bit Cortex M0, STM32 ARM Microcontroller, 48 MHz, 256kB FLASH, 24-Pin WLCSP-24 RS stock no. 315-776 Mfr. Part No. STM32C091ECY6TR Subtotal (1 unit) R 42,39(exc. VAT) R 42,39/unit Quantity	STMicroelectronics	-	ARM Microcontroller	STM32	WLCSP-24	Surface	-	24	ARM 32 Bit Cortex M0	-	-	256kB	-	48MHz	-	36kB	3.6V	-	-	256kB	-	-40°C	-	61	125°C	0.35mm	1.7mm	-	ECOPACK2, RoHS	2.6mm	2V	-	-	-	-	-
In Stock STMicroelectronics STM32C092FCP6 ARM 32 bit Cortex M0+ CPU, STM32C092 Microcontroller, 48 MHz FLASH, 20-Pin TSSOP RS stock no. 315-772 Mfr. Part No. STM32C092FCP6 Subtotal (1 unit) R 136,34(exc. VAT) R 136,34/unit Quantity	STMicroelectronics	-	Microcontroller	STM32C092	TSSOP	-	-	20	ARM 32 bit Cortex M0+ CPU	-	-	-	-	48MHz	-	256kB	3.6V	-	-	-	-	-45°C	-	61	80°C	-	6.5mm	-	No	4.4mm	2V	-	-	-	-	-
In Stock STMicroelectronics STM32WBA63CIU6, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 2MB FLASH, 48-Pin RS stock no. 330-278 Mfr. Part No. STM32WBA63CIU6 Subtotal (1 unit) R 126,56(exc. VAT) R 126,56/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	UFQFPN	Surface	-	48	ARM Cortex M33	32bit	-	2MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.46mm	5mm	-	FCC CFR47 part 15, ETSI EN 300 328, EN 300 440, ARIB STD-T66	7mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32C092RCT6 ARM 32 bit Cortex M0+ CPU, STM32C092 Microcontroller, 48 MHz FLASH, 64-Pin LQFP RS stock no. 315-741 Mfr. Part No. STM32C092RCT6 Subtotal (1 unit) R 39,17(exc. VAT) R 39,17/unit Quantity	STMicroelectronics	-	Microcontroller	STM32C092	LQFP	-	-	64	ARM 32 bit Cortex M0+ CPU	-	-	-	-	48MHz	-	256kB	3.6V	-	-	-	-	-45°C	-	61	80°C	-	10mm	-	No	10mm	2V	-	-	-	-	-
Currently unavailable STMicroelectronics STM32WBA65RGV7, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 1MB FLASH, 68-Pin RS stock no. 330-300 Mfr. Part No. STM32WBA65RGV7 Subtotal (1 unit) R 73,29(exc. VAT) R 73,29/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	VFQFPN	Surface	-	68	ARM Cortex M33	32bit	-	1MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.46mm	5mm	-	FCC CFR47 part 15, EN 300 440, ETSI EN 300 328, ARIB STD-T66	8mm	1.71V	-	-	-	-	-
Currently unavailable STMicroelectronics STM32WBA65CIU7, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 2MB FLASH, 48-Pin RS stock no. 330-292 Mfr. Part No. STM32WBA65CIU7 Subtotal (1 unit) R 83,75(exc. VAT) R 83,75/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	UFQFPN	Surface	-	48	ARM Cortex M33	32bit	-	2MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.46mm	5mm	-	ARIB STD-T66, EN 300 440, ETSI EN 300 328, FCC CFR47 part 15	8mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32WBA64CIU7, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 2MB FLASH, 48-Pin RS stock no. 330-286 Mfr. Part No. STM32WBA64CIU7 Subtotal (1 unit) R 83,61(exc. VAT) R 83,61/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	UFQFPN	Surface	-	48	ARM Cortex M33	32bit	-	2MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.46mm	5mm	-	ARIB STD-T66, EN 300 440, ETSI EN 300 328, FCC CFR47 part 15	7mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32WBA65CIU6, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 2MB FLASH, 48-Pin RS stock no. 330-290 Mfr. Part No. STM32WBA65CIU6 Subtotal (1 unit) R 128,34(exc. VAT) R 128,34/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	UFQFPN	Surface	-	48	ARM Cortex M33	32bit	-	2MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.46mm	5mm	-	FCC CFR47 part 15, ECOPACK2, ARIB STD-T66, ETSI EN 300 328, EN 300 440	7mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32WBA65RIV7TR, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 2MB FLASH, 68-Pin RS stock no. 330-306 Mfr. Part No. STM32WBA65RIV7TR Subtotal (1 unit) R 84,64(exc. VAT) R 84,64/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	VFQFPN	Surface	-	68	ARM Cortex M33	32bit	-	2MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	7mm	5mm	-	ARIB STD-T66, EN 300 440, ETSI EN 300 328, FCC CFR47 part 15	8mm	1.71V	-	-	-	-	-
In Stock ROHM ML62Q2035-NNNTDZWATZ, 16 bit 16 Bit CPU, ML62Q2033/2035/2043/2045 Microcontroller, 64 MHz, 32kB FLASH, 20-Pin RS stock no. 329-116 Mfr. Part No. ML62Q2035-NNNTDZWATZ Subtotal (1 tape of 5 units) R 145,21(exc. VAT) R 29,042/unit Quantity	ROHM	-	Microcontroller	ML62Q2033/2035/2043/2045	TSSOP-20	Surface	-	20	16 Bit CPU	16bit	-	32kB	8 Bit	64MHz	-	2kB	6.5V	-	3	-	1W	-40°C	-	20	105°C	-	6.5mm	-	RoHS	4.4mm	-	-	-	-	-	-
Last RS stock STMicroelectronics STM32L496WGY6PST, 16 bit ARM Cortex M4, STM32L496xx Microcontroller, 80 MHz, 1MB FLASH, 115-Pin CSP RS stock no. 330-327 Mfr. Part No. STM32L496WGY6PST Subtotal (1 unit) R 116,91(exc. VAT) R 116,91/unit Quantity	STMicroelectronics	-	Microcontroller	STM32L496xx	CSP	Surface	-	115	ARM Cortex M4	16bit	-	1MB	2 x 12 Bit	80MHz	-	320kB	3.6V	-	2	-	-	-40°C	-	136	125°C	7mm	7.3mm	-	ECOPACK2	4.15mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32WBA63CIU7, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 2MB FLASH, 48-Pin RS stock no. 330-280 Mfr. Part No. STM32WBA63CIU7 Subtotal (1 unit) R 82,49(exc. VAT) R 82,49/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	UFQFPN	Surface	-	48	ARM Cortex M33	32bit	-	2MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.46mm	5mm	-	ARIB STD-T66, EN 300 440, ETSI EN 300 328, FCC CFR47 part 15	7mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32L496VGT3, 16 bit ARM Cortex M4, STM32L496xx Microcontroller, 80 MHz, 1MB FLASH, 100-Pin LQFP RS stock no. 330-356 Mfr. Part No. STM32L496VGT3 Subtotal (1 unit) R 179,74(exc. VAT) R 179,74/unit Quantity	STMicroelectronics	-	Microcontroller	STM32L496xx	LQFP ECOPACK2	Surface	-	100	ARM Cortex M4	16bit	-	1MB	2 x 12 Bit	80MHz	-	320kB	3.6V	-	2	-	-	-40°C	-	136	125°C	7mm	7.3mm	-	ECOPACK2	16mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32U535REI3Q, 32 bit ARM Cortex M4, STM32U535xx Microcontroller, 160 MHz, 512kB FLASH, 64-Pin UFBGA RS stock no. 330-329 Mfr. Part No. STM32U535REI3Q Subtotal (1 unit) R 130,79(exc. VAT) R 130,79/unit Quantity	STMicroelectronics	-	Microcontroller	STM32U535xx	UFBGA	Surface	-	64	ARM Cortex M4	32bit	CAN FD, I2C, ISO 7816, LIN, LPUART, Parallel, SAI, SDM, SMBus/PMBus, SPI, UART, USART, USB	512kB	2 x 12 Bit	160MHz	-	274kB	3.6V	-	1	-	-	-40°C	-	82	125°C	7mm	9mm	-	ECOPACK2	12mm	1.71V	-	-	-	-	-
Last RS stock STMicroelectronics STM32WBA65MGF7TR, 32 bit ARM Cortex M33, STM32WBA6xxx Microcontroller, 100 MHz, 1MB FLASH, 88-Pin RS stock no. 330-295 Mfr. Part No. STM32WBA65MGF7TR Subtotal (1 unit) R 72,63(exc. VAT) R 72,63/unit Quantity	STMicroelectronics	-	Microcontroller	STM32WBA6xxx	Thin WLCSP	Surface	-	88	ARM Cortex M33	32bit	-	1MB	-	100MHz	-	512kB	3.6V	-	2	-	-	-40°C	-	86	105°C	3.46mm	5mm	-	FCC CFR47 part 15, ETSI EN 300 328, EN 300 440, ECOPACK2, ARIB STD-T66	3.46mm	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32L4R9AII6, 16 bit ARM Cortex M4, STM32L4R Microcontroller, 48 MHz, 2MB FLASH, 169-Pin UFBGA RS stock no. 330-353 Mfr. Part No. STM32L4R9AII6 Subtotal (1 unit) R 305,70(exc. VAT) R 305,70/unit Quantity	STMicroelectronics	-	Microcontroller	STM32L4R	UFBGA	Surface	-	169	ARM Cortex M4	16bit	-	2MB	2 x 12 Bit	48MHz	-	640kB	3.6V	-	2	-	-	-40°C	-	136	125°C	7mm	7.3mm	-	CAN 2.0B, LIN, ISO 7816, IrDA	7mm	1.71V	-	-	-	-	-