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QFN-20 Embedded Processors & Controllers

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Core	Number of I/Os	Data Bus Width	ADC Resolution
8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.4mm Pitch width MS51XB9AE Nuvoton 1: £0.488 627In Stock	Mfr. Part No. MS51XB9AE Mouser Part No 503-MS51XB9AE	Nuvoton	8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.4mm Pitch width Learn More about Nuvoton ms51 industrial mcus	Datasheet	627In Stock	£0.488 £0.418 £0.368 £0.348 View £0.306 £0.291 £0.275 £0.267	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	8051	18 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8-Bit UL PWR MCU 8Kbytes -40 to 85 STM8L101F3U6ATR STMicroelectronics 1: £1.42 78In Stock	Mfr. Part No. STM8L101F3U6ATR Mouser Part No 511-STM8L101F3U6ATR	STMicroelectronics	8-bit Microcontrollers - MCU 8-Bit UL PWR MCU 8Kbytes -40 to 85 Learn More about STMicroelectronics stm8l	Datasheet	78In Stock	Cut Tape £1.42 £1.05 £0.882 £0.841 View Reel £0.668 £0.811 £0.704 £0.687 £0.668 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	QFN-20	STM8	18 I/O	8 bit	No ADC
32-bit Microcontrollers - MCU 8KB RAM 79 Power microMIPS PIC32MM0064GPL020-I/ML Microchip Technology 1: £1.39 608In Stock	Mfr. Part No. PIC32MM0064GPL020-I/ML Mouser Part No 579-MM0064GPL020IML	Microchip Technology	32-bit Microcontrollers - MCU 8KB RAM 79 Power microMIPS Learn More about Microchip Technology microchip pic32mm microcontrollers	Datasheet	608In Stock	£1.39 £1.27 £1.14	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	MIPS32 microAptiv UC	16 I/O	32 bit	10 bit/12 bit
8-bit Microcontrollers - MCU 7KB FLASH 256B RAM 18 I/O 10-BIT ADC PIC16F1508-I/ML Microchip Technology 1: £1.13 152In Stock	Mfr. Part No. PIC16F1508-I/ML Mouser Part No 579-PIC16F1508-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 7KB FLASH 256B RAM 18 I/O 10-BIT ADC Learn More about Microchip Technology microchip pic16f15xx microcontrollers	Datasheet	152In Stock	£1.13 £1.04 £0.943	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 8 Bit MCU 14KB Flash 1K RAM, 10-bit ADC PIC16F1619-I/ML Microchip Technology 1: £1.19 803In Stock	Mfr. Part No. PIC16F1619-I/ML Mouser Part No 579-PIC16F1619-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 8 Bit MCU 14KB Flash 1K RAM, 10-bit ADC Learn More about Microchip Technology microchip brushless dc motors	Datasheet	803In Stock	£1.19 £1.09 £0.986	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 4K Wrd Flsh 512B RAM Hi-Spd Comp 10B ADC PIC16F1708-I/ML Microchip Technology 1: £1.15 461In Stock	Mfr. Part No. PIC16F1708-I/ML Mouser Part No 579-PIC16F1708-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 4K Wrd Flsh 512B RAM Hi-Spd Comp 10B ADC Learn More about Microchip Technology microchip intelligent analog PIC	Datasheet	461In Stock	£1.15 £1.05 £0.969	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 4K Wrd Flsh 512B RAM Hi-Spd Comp 10B ADC PIC16F1708T-I/ML Microchip Technology 1: £1.15 988In Stock 3,300Expected 12/10/2026	Mfr. Part No. PIC16F1708T-I/ML Mouser Part No 579-PIC16F1708T-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 4K Wrd Flsh 512B RAM Hi-Spd Comp 10B ADC Learn More about Microchip Technology microchip intelligent analog PIC	Datasheet	988In Stock 3,300Expected 12/10/2026	Cut Tape £1.15 Reel £0.978 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 7.1 KB 256 RAM 18I/O PIC16F690-I/ML Microchip Technology 1: £2.03 418In Stock	Mfr. Part No. PIC16F690-I/ML Mouser Part No 579-PIC16F690-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 7.1 KB 256 RAM 18I/O	Datasheet	418In Stock	£2.03	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 8KBFlash 256bytesRAM 256bytesEEPROM PIC18F13K22-I/ML Microchip Technology 1: £1.59 603In Stock	Mfr. Part No. PIC18F13K22-I/ML Mouser Part No 579-PIC18F13K22-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 8KBFlash 256bytesRAM 256bytesEEPROM Learn More about Microchip Technology microchipxlp	Datasheet	603In Stock	£1.59 £1.47 £1.32	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC18	17 I/O	8 bit	10 bit
16-bit Microcontrollers - MCU 8KB FLASH 1KB RAM 256B 3V PIC24F08KL301-I/MQ Microchip Technology 1: £1.48 310In Stock	Mfr. Part No. PIC24F08KL301-I/MQ Mouser Part No 579-PIC24F08KL301IMQ	Microchip Technology	16-bit Microcontrollers - MCU 8KB FLASH 1KB RAM 256B 3V Learn More about Microchip Technology microchip 16bit mcu dsc	Datasheet	310In Stock	£1.48 £1.34 £1.22	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC24F	18 I/O	16 bit	10 bit
16-bit Microcontrollers - MCU 16KB FLASH 1KB RAM 512B 3V 10-BIT ADC PIC24F16KL401T-I/MQ Microchip Technology 1: £2.10 36In Stock 3,300Expected 26/10/2026	Mfr. Part No. PIC24F16KL401T-I/MQ Mouser Part No 579-PIC24F16K401TIMQ	Microchip Technology	16-bit Microcontrollers - MCU 16KB FLASH 1KB RAM 512B 3V 10-BIT ADC Learn More about Microchip Technology microchip pic24f kl	Datasheet	36In Stock 3,300Expected 26/10/2026	Cut Tape £2.10 £2.06 Reel £1.75 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	SMD/SMT	QFN-20	PIC24F	18 I/O	16 bit	10 bit
16-bit Microcontrollers - MCU 16KB FLASH 1KB RAM 3V 10-BIT ADC PIC24F16KL401-I/MQ Microchip Technology 1: £2.05 409In Stock	Mfr. Part No. PIC24F16KL401-I/MQ Mouser Part No 579-PIC24F16KL401IMQ	Microchip Technology	16-bit Microcontrollers - MCU 16KB FLASH 1KB RAM 3V 10-BIT ADC Learn More about Microchip Technology microchip pic24f kl	Datasheet	409In Stock	£2.05 £1.89 £1.71	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC24F	18 I/O	16 bit	10 bit
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16G-C-QFN20 Silicon Labs 1: £1.20 43In Stock 2,520Expected 08/01/2027	Mfr. Part No. EFM8BB21F16G-C-QFN20 Mouser Part No 634-8BB21F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	43In Stock 2,520Expected 08/01/2027	£1.20 £1.03 £0.899 £0.841 £0.745	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16G-C-QFN20R Silicon Labs 1: £1.24 34In Stock 58,500Expected 08/01/2027	Mfr. Part No. EFM8BB21F16G-C-QFN20R Mouser Part No 634-8BB21F16GCQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	34In Stock 58,500Expected 08/01/2027	Cut Tape £1.24 £1.05 £0.925 £0.856 £0.759 Reel £0.704 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN20 Silicon Labs 1: £1.94 164In Stock	Mfr. Part No. EFM8UB10F16G-C-QFN20 Mouser Part No 634-8UB10F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	164In Stock	£1.94 £1.63 £1.42 £1.34 £1.20	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	13 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN20R Silicon Labs 1: £2.32 117In Stock 49,500On Order	Mfr. Part No. EFM8UB10F16G-C-QFN20R Mouser Part No 634-8UB10F16GCQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	117In Stock 49,500On Order On Order Ship Dates Mfr. No: EFM8UB10F16G-C-QFN20R Stock: 117 Can Dispatch Immediately On Order: 9,000 Expected 07/01/2027 40,500 Expected 08/01/2027 Factory Lead Time: 31 Weeks	Cut Tape £2.32 £1.69 £1.53 £1.37 View Reel £1.13 £1.35 £1.20 £1.13 £1.13 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-20	CIP-51 8051	13 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16I-C-QFN20R Silicon Labs 1: £1.39 166In Stock	Mfr. Part No. EFM8BB21F16I-C-QFN20R Mouser Part No 634-BB21F16ICQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	166In Stock	Cut Tape £1.39 £1.18 £1.04 £0.978 View Reel £0.678 £0.78 £0.747 £0.678 £0.678 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-QFN20 Silicon Labs 1: £0.736 151In Stock	Mfr. Part No. EFM8BB51F16G-C-QFN20 Mouser Part No 634-EFM851F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	151In Stock	£0.736 £0.576 £0.512 £0.454 View £0.427 £0.409 £0.395 £0.378 £0.369	Min.: 1 Mult.: 1	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-QFN20R Silicon Labs 1: £0.698 1,016In Stock 7,500On Order	Mfr. Part No. EFM8BB51F16G-C-QFN20R Mouser Part No 634-EFM851F16GQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	1,016In Stock 7,500On Order	Cut Tape £0.698 £0.502 £0.453 £0.398 View Reel £0.356 £0.373 £0.357 £0.356	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-QFN20 Silicon Labs 1: £0.751 194In Stock	Mfr. Part No. EFM8BB51F16I-C-QFN20 Mouser Part No 634-EFM851F16ICQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	194In Stock	£0.751 £0.636 £0.456 £0.437 View £0.423 £0.404 £0.394	Min.: 1 Mult.: 1	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16G-C-QFN20 Silicon Labs 1: £0.691 234In Stock	Mfr. Part No. EFM8BB52F16G-C-QFN20 Mouser Part No 634-EFM852F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	234In Stock	£0.691 £0.55 £0.392 £0.375 View £0.36 £0.345 £0.335	Min.: 1 Mult.: 1	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16G-C-QFN20R Silicon Labs 1: £0.705 2,499In Stock	Mfr. Part No. EFM8BB52F16G-C-QFN20R Mouser Part No 634-EFM852F16GQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	2,499In Stock	Cut Tape £0.705 £0.608 £0.533 £0.505 Reel £0.367 View £0.487 £0.428 £0.405 £0.335	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F32G-C-QFN20 Silicon Labs 1: £1.37 2,182In Stock	Mfr. Part No. EFM8BB52F32G-C-QFN20 Mouser Part No 634-EFM852F32GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	2,182In Stock	£1.37 £0.882 £0.78 £0.642 View £0.56 £0.53 £0.445 £0.406 £0.394	Min.: 1 Mult.: 1	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8G-C-QFN20 Silicon Labs 1: £0.796 294In Stock	Mfr. Part No. EFM8BB51F8G-C-QFN20 Mouser Part No 634-EFM8B51F8GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	294In Stock	£0.796 £0.571 £0.53 £0.388 View £0.373 £0.357 £0.347	Min.: 1 Mult.: 1	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16A-C-QFN20 Silicon Labs 1: £2.36 463In Stock 2,520Expected 07/10/2026	Mfr. Part No. EFM8BB21F16A-C-QFN20 Mouser Part No 634-EFM8BB21F16FN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	463In Stock 2,520Expected 07/10/2026	£2.36 £1.75 £1.61 £1.44 View £1.36 £1.33 £1.26 £1.22 £1.20	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit

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