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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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Temporarily out of stock Microchip PIC16F873-20/SO, 8 bit PIC, PIC16F87X Microcontroller, 20 MHz, 14kB FLASH, 28-Pin SOIC RS stock no. 144-9156 Mfr. Part No. PIC16F873-20/SO Subtotal (1 tube of 27 units) R 3 252,717(exc. VAT) R 120,471/unit Quantity	Microchip	-	Microcontroller	PIC16F87X	SOIC	Surface	-	28	PIC	8bit	-	14kB	-	20MHz	-	192bit	5.5V	-	-	-	1W	0°C	-	22	70°C	2.39mm	18.08mm	-	RoHS	7.59mm	2V	-	-	-	-	-
In Stock STMicroelectronics STM32WBA54CEU6, 32 bit ARM Cortex M33, STM32WBA5xxx Wireless Microcontroller, 100 MHz, 512kB FLASH, RS stock no. 215-124 Mfr. Part No. STM32WBA54CEU6 Subtotal (1 tray of 260 units) R 15 868,06(exc. VAT) R 61,031/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WBA5xxx	UFQFPN	Surface	-	48	ARM Cortex M33	32bit	PTA	512kB	-	100MHz	-	128kB	3.6V	-	2	-	-	-40°C	-	35	105°C	0.6mm	7mm	-	RoHS	7mm	1.71V	-	-	-	-	-
Temporarily out of stock STMicroelectronics STM32WB07KCV7TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-115 Mfr. Part No. STM32WB07KCV7TR Subtotal (1 reel of 3000 units) R 151 890,00(exc. VAT) R 50,63/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	VFQFPN	Surface	-	32	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	ETSI EN 300 328, EN 300 440, Bluetooth SIG core specification version 5.4, FCC CFR47 part 15, ARIB STD-T66	5mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32U073MCT6, 32 bit ARM Cortex M0+, STM32U073 Microcontroller, 56 MHz, 256kB FLASH, 81-Pin LQFP RS stock no. 216-835 Mfr. Part No. STM32U073MCT6 Subtotal (1 unit) R 89,47(exc. VAT) R 89,47/unit Quantity	STMicroelectronics	-	Microcontroller	STM32U073	LQFP	Surface	-	81	ARM Cortex M0+	32bit	-	256kB	1 x 12 Bit DAC	56MHz	-	40kB	3.6V	-	-	-	-	-40°C	-	69	125°C	12mm	12mm	-	RoHS	-	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB05TNF6TR, 32 bit ARM Cortex M0+, STM32WB05xN Wireless Microcontroller, 64 MHz FLASH, 36-Pin RS stock no. 215-089 Mfr. Part No. STM32WB05TNF6TR Subtotal (1 reel of 2500 units) R 70 750,00(exc. VAT) R 28,30/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB05xN	WLCSP	Surface	-	36	ARM Cortex M0+	32bit	-	-	-	64MHz	-	-	3.6V	-	2	-	-	-40°C	-	20	105°C	5mm	5mm	-	Bluetooth Low Energy SIG core specification version 5.4, ECOPACK2	2.592mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB06CCV6TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-096 Mfr. Part No. STM32WB06CCV6TR Subtotal (1 unit) R 50,82(exc. VAT) R 50,82/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	VFQFPN	Surface	-	48	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	ARIB STD-T66, ETSI EN 300 328, FCC CFR47 part 15, EN 300 440, Bluetooth Low Energy SIG core specification version 5.4	5mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB05TZF6TR, 32 bit ARM Cortex M0+, STM32WB Wireless Microcontroller, 64 MHz, 192kB FLASH, 36-Pin RS stock no. 215-092 Mfr. Part No. STM32WB05TZF6TR Subtotal (1 reel of 2500 units) R 84 237,50(exc. VAT) R 33,695/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB	WLCSP	Surface	-	36	ARM Cortex M0+	32bit	-	192kB	-	64MHz	-	24kB	3.6V	-	2	-	-	-40°C	-	20	105°C	5mm	5mm	-	RoHS, IrDA SIR, ISO 7816 (smart card), FCC CFR47 part 15, ETSI EN 300 328/440, ECOPACK2, ARIB STD‑T66	2.592mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB07CCF6TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-107 Mfr. Part No. STM32WB07CCF6TR Subtotal (1 unit) R 56,16(exc. VAT) R 56,16/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	WLCSP	Surface	-	48	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	EN 300 440, ETSI EN 300 328, Bluetooth Low Energy SIG core specification version 5.4, ECOPACK2, ARIB STD-T66, FCC CFR47 part 15	3.14mm	1.7V	-	-	-	-	-
Temporarily out of stock STMicroelectronics STM32WB07KCV6TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-112 Mfr. Part No. STM32WB07KCV6TR Subtotal (1 reel of 3000 units) R 139 557,00(exc. VAT) R 46,519/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	VFQFPN	Surface	-	32	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	ARIB STD-T66, EN 300 440, Bluetooth Low Energy SIG core specification version 5.4, FCC CFR47 part 15, ETSI EN 300 328	6mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB06KCV7TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-105 Mfr. Part No. STM32WB06KCV7TR Subtotal (1 unit) R 57,94(exc. VAT) R 57,94/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	VFQFPN	Surface	-	32	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	Bluetooth Low Energy SIG core specification version 5.4, FCC CFR47 part 15, EN 300 440, ARIB STD-T66, ETSI EN 300 328	5mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB06CCV7TR, 32 bit ARM Cortex M0+, STM32WB0xxC Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-098 Mfr. Part No. STM32WB06CCV7TR Subtotal (1 reel of 3000 units) R 148 218,00(exc. VAT) R 49,406/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0xxC	VFQFPN	Surface	-	48	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	FCC CFR47 part 15, ARIB STD-T66, Bluetooth Low Energy SIG 5.4, EN 300 440, ETSI EN 300 328	5mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB07KCV6TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-113 Mfr. Part No. STM32WB07KCV6TR Subtotal (1 unit) R 62,59(exc. VAT) R 62,59/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	VFQFPN	Surface	-	32	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	ARIB STD-T66, EN 300 440, Bluetooth Low Energy SIG core specification version 5.4, FCC CFR47 part 15, ETSI EN 300 328	6mm	1.7V	-	-	-	-	-
Last RS stock Microchip, 8 bit PIC, PIC18(L)F1XK22 Microcontroller, 64 MHz, 8kB FLASH, 20-Pin SOIC RS stock no. 144-9236 Mfr. Part No. PIC18F13K22-I/SO Subtotal (1 tube of 38 units) R 1 454,602(exc. VAT) R 38,279/unit Quantity	Microchip	-	Microcontroller	PIC18(L)F1XK22	SOIC	Surface	-	20	PIC	8bit	-	8kB	1 x 5 Bit	64MHz	-	256bit	5.5V	-	2	-	800mW	-40°C	-	18	85°C	2.35mm	12.8mm	-	RoHS	7.5mm	2.3V	-	-	-	-	-
In Stock STMicroelectronics STM32H7R7I8T6, 32 bit ARM Cortex M7, STM32H7Rxx8 Microcontroller, 600 MHz, 64kB FLASH, 176-Pin LQFP RS stock no. 216-824 Mfr. Part No. STM32H7R7I8T6 Subtotal (1 unit) R 208,24(exc. VAT) R 208,24/unit Quantity	STMicroelectronics	-	Microcontroller	STM32H7Rxx8	LQFP	Surface	-	176	ARM Cortex M7	32bit	-	64kB	-	600MHz	-	620kB	3.6V	-	-	-	-	-	-	152	-	-	-	-	ECOPACK2	-	1.71V	-	-	-	-	-
Temporarily out of stock STMicroelectronics STM32WB09TEF6TR, 32 bit ARM Cortex M0+, STM32WB Wireless Microcontroller, 64 MHz, 512kB FLASH, 36-Pin RS stock no. 215-117 Mfr. Part No. STM32WB09TEF6TR Subtotal (1 reel of 5000 units) R 218 765,00(exc. VAT) R 43,753/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB	WLCSP	Surface	-	36	ARM Cortex M0+	32bit	-	512kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	20	105°C	5mm	5mm	-	RoHS Certificate of Compliance	2.99mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32WB07KCV7TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-116 Mfr. Part No. STM32WB07KCV7TR Subtotal (1 unit) R 61,94(exc. VAT) R 61,94/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	VFQFPN	Surface	-	32	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	ETSI EN 300 328, EN 300 440, Bluetooth SIG core specification version 5.4, FCC CFR47 part 15, ARIB STD-T66	5mm	1.7V	-	-	-	-	-
Currently unavailable STMicroelectronics STM32WBA55UEI6, 32 bit ARM Cortex M33, STM32WBA5 Wireless Microcontroller, 100 MHz, 512kB FLASH, RS stock no. 215-161 Mfr. Part No. STM32WBA55UEI6 Subtotal (1 unit) R 217,91(exc. VAT) R 217,91/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WBA5	UFBGA	Surface	-	59	ARM Cortex M33	32bit	-	512kB	-	100MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	35	105°C	-	-	-	RoHS	-	1.71V	-	-	-	-	-
In Stock STMicroelectronics STM32WB06KCV7TR, 32 bit ARM Cortex M0+, STM32WB0 Wireless Microcontroller, 64 MHz, 256kB FLASH, RS stock no. 215-103 Mfr. Part No. STM32WB06KCV7TR Subtotal (1 reel of 3000 units) R 142 254,00(exc. VAT) R 47,418/unit Quantity	STMicroelectronics	-	Wireless Microcontroller	STM32WB0	VFQFPN	Surface	-	32	ARM Cortex M0+	32bit	-	256kB	-	64MHz	-	64kB	3.6V	-	2	-	-	-40°C	-	32	105°C	5mm	5mm	-	Bluetooth Low Energy SIG core specification version 5.4, FCC CFR47 part 15, EN 300 440, ARIB STD-T66, ETSI EN 300 328	5mm	1.7V	-	-	-	-	-
In Stock STMicroelectronics STM32H7R3L8H6, 32 bit ARM Cortex M7, STM32H7R Microcontroller, 600 MHz, 64kB FLASH, 225-Pin TFBGA RS stock no. 216-811 Mfr. Part No. STM32H7R3L8H6 Subtotal (1 unit) R 202,52(exc. VAT) R 202,52/unit Quantity	STMicroelectronics	-	Microcontroller	STM32H7R	TFBGA	Surface	-	225	ARM Cortex M7	32bit	-	64kB	-	600MHz	-	-	3.6V	-	-	-	-	-40°C	-	152	85°C	13mm	13mm	-	RoHS	-	1.71V	-	-	-	-	-
In Stock ROHM ML62Q1552-NNNTBZWBX, 16 bit 16 Bit MCU, ML62Q1500/1800 Group Microcontroller, 24 MHz, 64kB FLASH, 64-Pin TQFP RS stock no. 264-317 Mfr. Part No. ML62Q1552-NNNTBZWBX Subtotal (1 tape of 5 units) R 246,58(exc. VAT) R 49,316/unit Quantity	ROHM	-	Microcontroller	ML62Q1500/1800 Group	TQFP	Surface	-	64	16 Bit MCU	16bit	-	64kB	1	24MHz	-	8kB	5.5V	-	2	-	-	-40°C	-	92	105°C	-	10mm	-	Safety function (IEC60730/60335 Class B)	1mm	1.6V	-	-	-	-	-