EFM8BB21F16G-C-QFN20R Silicon Labs IC MCU 8BIT 16KB FLASH 20QFN

2026/02/3 15

CATALOG

Taiwan (Province of China)

Family Name	EFM8
Data Bus Width (bit)	8
Device Core	8051
Instruction Set Architecture	CISC
Maximum Clock Rate (MHz)	50
Program Memory Type	Flash
Program Memory Size	16KB
RAM Size	2.25KB
Maximum CPU Frequency (MHz)	50
GPIO	16
Number of Timers	5
ADC Channels	15
ADC Resolution (bit)	12
Core Architecture	8051
Number of ADCs	1
PWM	3
Watchdog	1
Analog Comparators	2
Parallel Master Port	No
Real Time Clock	No
Timers Resolution (bit)	16/16/16/16/16
Interface Type	I2C/SMBus/SPI/UART
Programmability	Yes
SPI	1
I2C	2
I2S	0
UART	2
USART	0
CAN	0
USB	0
Ethernet	0
Minimum Operating Supply Voltage (V)	2.2
Typical Operating Supply Voltage (V)	2.5\|3.3
Maximum Operating Supply Voltage (V)	3.6
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	85
Temperature Flag	Opr
Operating Supply Voltage (V)	2.5\|3.3
Maximum Storage Temperature (°C)	150
Minimum Storage Temperature (°C)	-65

Supplier Package	QFN EP
Basic Package Type	Non-Lead-Frame SMT
Pin Count	20
Lead Shape	No Lead
PCB	20
Tab	N/R
Pin Pitch (mm)	0.5
Package Length (mm)	3
Package Width (mm)	3
Package Height (mm)	0.73
Package Diameter (mm)	N/R
Seated Plane Height (mm)	0.75
Mounting	Surface Mount
Package Material	Plastic
Package Description	Quad Flat No Lead Package, Exposed Pad
Package Family Name	QFN
Jedec	MO-220WEEE
Package Outline	Link to Datasheet

MSL