SiLEFM8BB31F64G-D-QFP32

Overview

The EFM8BB31F64G-D-QFP32 is a high-performance 8-bit microcontroller from Silicon Labs based on the pipelined CIP-51 8051 core, operating at frequencies up to 50 MHz. It features 64 kB of Flash memory and 4.35 kB of RAM, providing substantial resources for complex logic in a small 32-pin QFP package. This Busy Bee family MCU integrates internal oscillators and a flexible peripheral crossbar to simplify hardware design and PCB routing.

Why Choose This Part

The CIP-51 core delivers significantly higher performance than standard 8051 architectures, with 70 percent of instructions executing in just one or two cycles. The internal 49 MHz oscillator with 2 percent accuracy eliminates the need for external crystals, reducing both cost and board space. Additionally, multiple low-power modes including a 0.2 uA shutdown state enable efficient operation in battery-powered designs.

Applications

Getting Started

Developers can begin by using the Simplicity Studio IDE, which provides comprehensive software libraries and configuration tools for the EFM8 series. Hardware evaluation is typically performed using the EFM8BB31 Silicon Labs Starter Kit (EFM8BB3-STK). The flexible crossbar can be configured via the Simplicity Configurator to map digital peripherals like UART, SPI, and I2C to any of the 29 available I/O pins.

EFM8BB31F64G-D Family

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