Mfr Part #:

EFM8BB21F16G-C-QFN20

The Silicon Labs EFM8BB21F16G-C-QFN20 is an 8-bit microcontroller featuring a 50 MHz core, 16KB Flash memory, and 2.25KB RAM. It is housed in a compact 20-QFN package.

✓ Total Stock: 4,837 pcs

EFM8BB21F16G-C-QFN20 Available from 2 distributors

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Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Xingangxin ✓ Non-Authorised Inventory information	4,737 pcs On Request	4737 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Flip Electronics ✓ Non-Authorised Inventory information	100 pcs On Request	100 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

EFM8BB21F16G-C-QFN20 Description

Short technical summary and product information.

The EFM8BB21F16G-C-QFN20 is part of Silicon Labs' Busy Bee family of 8-bit microcontrollers. It offers a comprehensive feature set in a small package, making it suitable for space-constrained applications. This MCU is built around a pipelined CIP-51 8051 core capable of operating at up to 50 MHz.

Key electrical specifications include 16KB of FLASH program memory and 2.25KB of RAM. It supports a wide operating voltage range of 2.2V to 3.6V and features integrated peripherals such as a 12-bit Analog-to-Digital converter (ADC), low-current analog comparators, and a temperature sensor. Connectivity options include I2C, SMBus, SPI, and UART/USART.

The microcontroller is designed for embedded applications and includes peripherals like Brown-out Detect/Reset, Power-On Reset (POR), Pulse-Width Modulation (PWM), and a Watchdog Timer (WDT). It offers up to 16 multifunction I/O pins.

Packaged in a 20-UFQFN Exposed Pad with a 20-QFN (3x3) supplier package, this device is designed for surface mount applications. The operating temperature range is -40°C to 85°C (TA).

EFM8BB21F16G-C-QFN20 Quick Information

Product Type: Microcontroller

Series: EFM8BB2

Canonical Name: EFM8BB21F16G-C-QFN20 Microcontroller

Subcategory: 8-bit

EFM8BB21F16G-C-QFN20 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

EFM8BB21F16G-C-QFN20 Features

8-bit CIP-51 8051 core
50 MHz maximum operating frequency
16KB FLASH program memory
2.25KB RAM
20-QFN surface mount package

EFM8BB21F16G-C-QFN20 Applications

Ideal for embedded applications
Suitable for space-constrained designs
Features multiple communication interfaces
Includes analog and digital peripherals

EFM8BB21F16G-C-QFN20 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the operating voltage for the EFM8BB21F16G-C-QFN20?

The operating voltage is 2.2V to 3.6V.

What package type is the EFM8BB21F16G-C-QFN20 microcontroller?

It comes in a 20-UFQFN Exposed Pad package, with a supplier package size of 20-QFN (3x3).

What is the operating temperature range for this microcontroller?

The operating temperature range is -40°C to 85°C (TA).

What is the RoHS status of the EFM8BB21F16G-C-QFN20?

The RoHS status is RoHS3 Compliant.

What is the program memory size and type?

It has 16KB of FLASH program memory.

What is the core processor and speed?

The core processor is an 8-bit CIP-51 8051, operating at a maximum frequency of 50 MHz.

Category	Microcontrollers
Manufacturer Name	Silicon Labs
Connectivity	I²C, SMBus, SPI, UART/USART
Core Processor	CIP-51 8051
Core Size	8-Bit
Data Converters	A/D 15x12b
Mounting Type	Surface Mount
Number of I	16
Operating Temperature	-40°C ~ 85°C (TA)
Oscillator Type	Internal
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Program Memory Size	16KB (16K x 8)
Program Memory Type	FLASH
RAM Size	2.25K x 8
Speed	50 MHz
Supplier Device Package	20-QFN (3x3)
Supplier Package	20-QFN (3x3)
Voltage	2.2V ~ 3.6V