EFM8BB21F16G-C-QFN20R Overview
The package is in 20-WFQFN Exposed Pad format. The MCU has 16 I/O ports. There is a mounting type Surface Mount associated with this Microcontroller. This Microcontroller is based on the 8-Bit core. There is a memory type of FLASH in its program memory. The temperature range that this Microcontroller operates at is -40°C~85°C TA. The electrical component that you are looking at belongs to the Busy Bee series of components. Microcontroller has abundant program memory size of 16KB 16K x 8. The CIP-51 8051 Core Processor powers the device and is one of its key features. This Microcontroller belongs to the MICROCONTROLLER uPs/uCs/peripheral ICs type. During the manufacture of the IC chip, there is a number 20 of terminations. A 8-bit operation is performed by this part. There is an output of 3V volts from the Microcontroller chip. A total of NO DMA channels are available on MCU chip. This MCU is implemented with 16kB memory. It is possible for the device to work with the motor using the PWM channel YES. It is possible to access the 20 pins on the chip through the 20 pins. It is equipped with 5 timers and counters. There is a 8051 core architecture integrated into it.
EFM8BB21F16G-C-QFN20R Features
20-WFQFN Exposed Pad package
Mounting type of Surface Mount

EFM8BB21F16G-C-QFN20R Applications
There are a lot of Silicon Labs
EFM8BB21F16G-C-QFN20R Microcontroller applications.

Kindle
Christmas lights
3D printers
Washing machine
Microwave ovens
Home appliances
Home video and audio
Entertainment products
Digital cameras
DVD\DV\MP3 players

Factory Lead Time	8 Weeks
Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	20-WFQFN Exposed Pad
Number of Pins	20
Operating Temperature	-40°C~85°C TA
Packaging	Tape & Reel (TR)
Series	Busy Bee
Published	2014
Part Status	Active
Moisture Sensitivity Level (MSL)	2 (1 Year)
Number of Terminations	20
Terminal Position	QUAD
Terminal Form	NO LEAD
Peak Reflow Temperature (Cel)	NOT SPECIFIED
Supply Voltage	3V
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Supply Voltage-Max (Vsup)	3.6V
Supply Voltage-Min (Vsup)	2.2V
Interface	I2C, SPI, UART
Memory Size	16kB
Oscillator Type	Internal
Number of I/O	16
RAM Size	2.25K x 8
Voltage - Supply (Vcc/Vdd)	2.2V~3.6V
uPs/uCs/Peripheral ICs Type	MICROCONTROLLER
Core Processor	CIP-51 8051
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Program Memory Type	FLASH
Core Size	8-Bit
Program Memory Size	16KB 16K x 8
Connectivity	I2C, SMBus, SPI, UART/USART
Bit Size	8
Data Converter	A/D 15x12b
Watchdog Timer	Yes
Has ADC	YES
DMA Channels	NO
PWM Channels	YES
DAC Channels	NO
Number of Timers/Counters	5
Core Architecture	8051
Max Frequency	50MHz
Length	3mm
Height Seated (Max)	0.6mm
Width	3mm
RoHS Status	RoHS Compliant