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QFN-20 Embedded Processors & Controllers

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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 7.1 KB 256 RAM 18I/O PIC16F690-I/ML Microchip Technology 1: $2.67 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	$2.67	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 8KBFlash 256bytesRAM 256bytesEEPROM PIC18F13K22-E/ML Microchip Technology 1: $2.33 382In Stock	Mfr. Part No. PIC18F13K22-E/ML Mouser Part No 579-PIC18F13K22-E/ML	Microchip Technology	8-bit Microcontrollers - MCU 8KBFlash 256bytesRAM 256bytesEEPROM Learn More about Microchip Technology microchip automotive 8bit mcus	Datasheet	382In Stock	$2.33 $2.14 $1.93	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC18	17 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 8KBFlash 256bytesRAM 256bytesEEPROM PIC18F13K22-I/ML Microchip Technology 1: $2.12 203In Stock 455On Order	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	203In Stock 455On Order	$2.12 $1.95 $1.76	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC18	17 I/O	8 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: $1.71 50In 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	50In Stock 2,520Expected 08/01/2027	$1.71 $1.45 $1.27 $1.06	Min.: 1 Mult.: 1	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: $2.58 110In 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	110In Stock	$2.58 $2.17 $1.79 $1.63 $1.59	Min.: 1 Mult.: 1	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: $1.78 331In 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	331In Stock	Cut Tape $1.78 $1.40 $1.25 $1.15 View Reel $0.896 $1.11 $1.06 $0.896 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	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: $1.08 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	$1.08 $0.78 $0.702 $0.617 View $0.577 $0.553 $0.535 $0.511 $0.499	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: $0.93 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 $0.93 $0.669 $0.603 $0.53 View Reel $0.474 $0.496 $0.475 $0.474	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: $1.14 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	$1.14 $0.824 $0.742 $0.653 View $0.61 $0.584 $0.566 $0.541 $0.527	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: $0.92 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	$0.92 $0.733 $0.522 $0.499 View $0.479 $0.459 $0.447	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: $0.96 874In 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	874In Stock	Cut Tape $0.96 $0.691 $0.622 $0.547 Reel $0.453 View $0.511 $0.489 $0.474 $0.442	Min.: 1 Mult.: 1 : 2,500	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: $0.99 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	$0.99 $0.713 $0.642 $0.564 View $0.528 $0.505 $0.489 $0.468 $0.456	Min.: 1 Mult.: 1	SMD/SMT	QFN-20		16 I/O
8-bit Microcontrollers - MCU 7.1 KB 256 RAM 18I/O PIC16F685-E/ML Microchip Technology 1: $2.75 37In Stock	Mfr. Part No. PIC16F685-E/ML Mouser Part No 579-PIC16F685-E/ML	Microchip Technology	8-bit Microcontrollers - MCU 7.1 KB 256 RAM 18I/O	Datasheet	37In Stock	$2.75	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 3.5 KB FLASH 128 B SRAM, 18 I/O PIC16F720-I/ML Microchip Technology 1: $1.40 218In Stock	Mfr. Part No. PIC16F720-I/ML Mouser Part No 579-PIC16F720-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 3.5 KB FLASH 128 B SRAM, 18 I/O Learn More about Microchip Technology microchip automotive 8bit mcus	Datasheet	218In Stock	$1.40 $1.28 $1.18	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	8 bit
8-bit Microcontrollers - MCU 7 KB FLASH 256 B SRAM, 18 I/O PIC16F721-I/ML Microchip Technology 1: $1.46 83In Stock	Mfr. Part No. PIC16F721-I/ML Mouser Part No 579-PIC16F721-I/ML	Microchip Technology	8-bit Microcontrollers - MCU 7 KB FLASH 256 B SRAM, 18 I/O Learn More about Microchip Technology microchip automotive 8bit mcus	Datasheet	83In Stock	$1.46 $1.31 $1.22	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	8 bit
8-bit Microcontrollers - MCU 7KB FLASH 256B RAM PIC16LF1508-E/ML Microchip Technology 1: $1.63 12In Stock	Mfr. Part No. PIC16LF1508-E/ML Mouser Part No 579-PIC16LF1508-E/ML	Microchip Technology	8-bit Microcontrollers - MCU 7KB FLASH 256B RAM	Datasheet	12In Stock	$1.63 $1.51 $1.37	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	PIC16	18 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F4G-A-QFN20 Silicon Labs 1: $1.22 218In Stock	Mfr. Part No. EFM8BB10F4G-A-QFN20 Mouser Part No 634-8BB10F4GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	218In Stock	$1.22 $0.89 $0.805 $0.712 View $0.667 $0.64 $0.612 $0.594 $0.58	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8-Bit UL PWR MCU 8Kbytes -40 to 85 STM8L101F3U6ATR STMicroelectronics 1: $1.89 69In 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	69In Stock	Cut Tape $1.89 $1.39 $1.18 $1.12 Reel $0.907 View $1.08 $0.937 $0.915 $0.898 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	QFN-20	STM8	18 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16A-C-QFN20R Silicon Labs 1: $3.33 48In Stock	Mfr. Part No. EFM8BB21F16A-C-QFN20R Mouser Part No 634-BB21F16ACQFN20R	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	48In Stock	Cut Tape $3.33 $2.48 $2.27 $2.03 Reel $1.73 View $1.92 $1.88 $1.78 $1.70	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 16KBFlash 512byteRAM 256bytesEEPROM PIC18F14K22T-I/ML Microchip Technology 1: $2.35 7,111On Order	Mfr. Part No. PIC18F14K22T-I/ML Mouser Part No 579-PIC18F14K22TI/ML	Microchip Technology	8-bit Microcontrollers - MCU 16KBFlash 512byteRAM 256bytesEEPROM Learn More about Microchip Technology microchipxlp	Datasheet	7,111On Order On Order Ship Dates Mfr. No: PIC18F14K22T-I/ML Stock: 0 On Order: 511 Expected 21/12/2026 6,600 Expected 24/12/2026 Factory Lead Time: 7 Weeks	Cut Tape $2.35 $2.32 Reel $1.96 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	SMD/SMT	QFN-20	PIC18	17 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-QFN20 Silicon Labs 1: $1.64 17,031On Order	Mfr. Part No. EFM8SB10F8G-A-QFN20 Mouser Part No 634-8SB10F8GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	17,031On Order On Order Ship Dates Mfr. No: EFM8SB10F8G-A-QFN20 Stock: 0 On Order: 2,331 Expected 10/11/2026 14,700 Expected 18/12/2026 Factory Lead Time: 12 Weeks	$1.64 $1.22 $1.11 $0.979 View $0.919 $0.883 $0.873 $0.816 $0.798	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: $1.60 93,467Expected 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	93,467Expected 08/01/2027	Cut Tape $1.60 $1.17 $1.06 $0.943 View Reel $0.788 $0.886 $0.851 $0.841 $0.788 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	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-QFN20R Silicon Labs 1: $2.64 49,037On 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	49,037On Order On Order Ship Dates Mfr. No: EFM8UB10F16G-C-QFN20R Stock: 0 On Order: 40,037 Expected 04/12/2026 9,000 Expected 07/12/2026 Factory Lead Time: 31 Weeks	Cut Tape $2.64 $2.21 $1.94 $1.84 View Reel $1.51 $1.80 $1.61 $1.51 $1.51 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	13 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8G-A-QFN20 Silicon Labs 1: $1.20 2,519Expected 17/11/2026	Mfr. Part No. EFM8BB10F8G-A-QFN20 Mouser Part No 634-8BB10F8GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	2,519Expected 17/11/2026	$1.20 $0.869 $0.787 $0.695 View $0.652 $0.625 $0.598 $0.581 $0.566	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8I-A-QFN20 Silicon Labs 1: $1.35 12,600On Order	Mfr. Part No. EFM8BB10F8I-A-QFN20 Mouser Part No 634-FM8BB10F8IAQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	12,600On Order On Order Ship Dates Mfr. No: EFM8BB10F8I-A-QFN20 Stock: 0 On Order: 2,520 Expected 24/11/2026 2,520 Expected 22/01/2027 7,560 Expected 25/01/2027 Factory Lead Time: 12 Weeks	$1.35 $0.978 $0.885 $0.782 View $0.733 $0.704 $0.672 $0.653 $0.638	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	16 I/O	8 bit	12 bit