PART NO.	PRICE		STOCK	MANUFACTURE	DESCRIPTION	Mounting Style	Package / Case	Maximum Operating Temperature	Packaging	Operating Supply Voltage	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution
EFM8BB21F16I-C-QFN20	1+ $1.200 10+ $1.130 25+ $1.100 50+ $1.070	PDF RFQ	1,160 In-stock	Silicon Labs	8-bit Microcontrollers - MCU 16kB/2304B RAM 12bADC -40C to 125C	SMD/SMT	QFN-20	+ 125 C	Tube	2.2 V to 3.6 V/3 V to 5.25 V	8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit
EFM8UB10F16G-C-QFN20	1+ $1.170 10+ $1.100 25+ $1.070 50+ $1.040	PDF RFQ	2,458 In-stock	Silicon Labs	8-bit Microcontrollers - MCU USB, 16kB/2304B RAM 12b ADC,CHGR...	SMD/SMT	QFN-20	+ 85 C	Tube	2.2 V to 3.6 V	CIP-51	8 bit	50 MHz	16 kB	256 B	12 bit
EFM8UB10F16G-C-QFN20R	1+ $1.170 10+ $1.100 25+ $1.070 50+ $1.040 1500+ $0.878	PDF RFQ	14,920 In-stock	Silicon Labs	8-bit Microcontrollers - MCU USB, 16kB/2304B RAM 12b ADC,CHGR...	SMD/SMT	QFN-20	+ 85 C	Reel	2.2 V to 3.6 V	CIP-51	8 bit	50 MHz	16 kB	256 B	12 bit
EFM8BB21F16G-C-QFN20R	1+ $0.700 10+ $0.663 25+ $0.644 50+ $0.624 1500+ $0.527	PDF RFQ	24,450 In-stock	Silicon Labs	8-bit Microcontrollers - MCU 16kB/2304B RAM 12b ADC	SMD/SMT	QFN-20	+ 85 C	Reel	2.2 V to 3.6 V	CIP-51	8 bit	50 MHz	16 kB	256 B	12 bit
EFM8BB21F16G-C-QFN20	1+ $0.700 10+ $0.663 25+ $0.644 50+ $0.624	PDF RFQ	296 In-stock	Silicon Labs	8-bit Microcontrollers - MCU 16kB/2304B RAM 12b ADC	SMD/SMT	QFN-20	+ 85 C	Tube	2.2 V to 3.6 V	CIP-51	8 bit	50 MHz	16 kB	256 B	12 bit