EFM8BB10F8I-A-QFN20

Product Overview

The EFM8BB10F8I-A-QFN20 from Silicon Labs is a Busy Bee 8-bit microcontroller built around a CIP-51 8051 core and operating at 25MHz. It provides 8KB (8K x 8) FLASH program memory, 512 x 8 RAM, and 16 I/O pins in a 20-QFN surface-mount package. The device includes an internal oscillator and supports I2C, SMBus, SPI, and UART/USART communication, along with PWM, brown-out detect/reset, POR, and watchdog timer functions. A/D 15x12b conversion is available for analog input tasks. The supply voltage range is 2.2V to 3.6V, and the operating temperature range is -40°C to 125°C.

Key Features

• 8-bit CIP-51 8051 core with 25MHz speed
• 8KB (8K x 8) FLASH program memory and 512 x 8 RAM
• 16 I/O pins with I2C, SMBus, SPI, and UART/USART interfaces
• A/D 15x12b analog-to-digital conversion
• PWM, brown-out detect/reset, POR, and watchdog timer peripherals
• 2.2V to 3.6V supply range and internal oscillator
• 20-QFN (3x3) exposed-pad surface-mount package
• -40°C to 125°C operating temperature range

Applications

• Sensor data acquisition using the A/D 15x12b and 16 I/O pins
• Control tasks using PWM outputs and 16 I/O pins
• Serial communication with host processors or peripherals through UART/USART, SPI, I2C, or SMBus
• Compact embedded controller designs constrained by the 20-QFN (3x3) footprint

Design & Procurement Notes

Design considerations include matching the 2.2V to 3.6V supply range, planning board layout for the 20-QFN exposed pad, and allocating enough program and RAM space for the 8KB FLASH and 512 x 8 memory configuration. The internal oscillator should be considered when planning timing architecture, while the A/D 15x12b, PWM, watchdog, brown-out detect/reset, POR, and serial interfaces can support mixed-signal and communication functions within the 16 available I/O pins. The -40°C to 125°C operating range should be considered for thermal environment requirements, and the 25MHz CIP-51 8051 core should be evaluated against the required processing workload.