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EFM8BB21F16I-C-QFN20R

SiLEFM8BB21F16I-C-QFN20R

Silicon Labs
CIP-51 8051 Busy Bee Microcontroller IC 8-Bit 50MHz 16KB (16K x 8) FLASH 20-QFN (3x3)
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Overview

The EFM8BB21F16I-C-QFN20R is an 8-bit CIP-51 (8051-core) microcontroller from Silicon Labs, operating at up to 50MHz. It features 16KB of Flash memory and 2.25KB of RAM, making it suitable for a range of embedded applications requiring a balance of performance and efficiency. Its integrated peripherals and compact 20-QFN package enhance its versatility for space-constrained designs.

Why Choose This Part

This microcontroller offers a high-performance 8051-compatible core running at 50MHz, providing ample processing power for 8-bit tasks. Its 5V tolerant I/O pins simplify interfacing with legacy or higher-voltage systems, reducing the need for external level shifters. The comprehensive set of integrated peripherals and low power modes contribute to efficient and cost-effective system designs.

Applications

Industrial Control Systems
Used in various industrial control applications requiring reliable 8-bit processing, multiple communication interfaces (I2C, SPI, UART), and robust peripherals like PWM and WDT.
Sensor Interface and Data Acquisition
Interfacing with analog sensors using its 15x12-bit ADC and processing data with its 50MHz 8-bit core, suitable for precision measurement and monitoring.
Appliance Control
Controlling functions in small and medium appliances, benefiting from its integrated brown-out detection, power-on reset, and low power modes for efficient operation.
Embedded Motor Drive
Implementing basic motor control logic utilizing the PWM module, I/O pins, and communication interfaces for command and feedback.
USB Peripherals
Developing simple USB-enabled devices or accessories, leveraging its communication capabilities to interface with a host system.

Key Specifications

Speed 50MHz
RAM Size 2.25K x 8
Core Size 8-Bit
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity I2C, SMBus, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 16
Core Processor CIP-51 8051
Package / Case 20-WFQFN Exposed Pad
Data Converters A/D 15x12b
Oscillator Type Internal
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 20-QFN (3x3)
Voltage - Supply (Vcc/Vdd) 2.2V ~ 3.6V

Getting Started

To get started, engineers can use Silicon Labs' Simplicity Studio IDE, which offers an integrated development environment, compilers, and debug tools. Evaluation kits, such as the EFM8BB2 Starter Kit, provide a ready-to-use platform for development and prototyping. The device supports in-system debugging via SWD, allowing for hardware breakpoints and single-stepping.

Also Consider

ATMEGA328P MCHPMicrochip Technology - A widely-used 8-bit AVR microcontroller, offering a mature ecosystem and a popular choice for general-purpose embedded applications, though typically at lower clock speeds.
STM8S003F3P6 STMicroelectronics - An 8-bit microcontroller from STMicroelectronics, providing an alternative with similar core capabilities and integrated peripherals for cost-sensitive applications.
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