EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Microcontrollers  8051    EFM8SB10F8G-A-QFN20
EFM8SB10F8G-A-QFN20

SiLEFM8SB10F8G-A-QFN20

Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
8,427 in stock
Datasheet Mouser Compare Prices

Overview

The EFM8SB10F8G-A-QFN20 is part of the Sleepy Bee family, an ultra-low power 8-bit microcontroller based on the high-speed CIP-51 8051 core. It operates at up to 25 MHz and is specifically optimized for battery-powered applications requiring minimal standby current and fast wake-up times. The device integrates 8 KB of flash and a flexible peripheral crossbar in a compact 3x3 mm QFN20 package.

Why Choose This Part

This MCU offers industry-leading low power consumption with sleep currents as low as 0.6 uA and a fast wake-up time. The 1.8V to 3.6V supply range and 5V-tolerant I/Os simplify interfacing with various sensors and battery chemistries. Additionally, the integrated LDO and high-resolution ADC reduce external component count in space-constrained designs.

Applications

Battery-Powered Wearables
Ideal for fitness trackers and simple wearable devices where extremely low sleep current (0.6 uA) and small physical footprint are critical.
Remote Sensors
Suited for loT sensor nodes that spend most of their time in sleep mode but require fast processing when triggered by internal timers or GPIO.
Consumer Electronics
Provides touch-sense capabilities and basic control logic for handheld gadgets and battery-operated remote controls.

Key Specifications

Speed 25MHz
RAM Size 512 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-UFQFN Exposed Pad
Data Converters A/D 9x12b
Oscillator Type Internal
Program Memory Size 8KB (8K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 20-QFN (3x3)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 3.6V

Getting Started

Development is supported by the Silicon Labs Simplicity Studio IDE, which includes a compiler and energy profiling tools. To begin hardware evaluation, use the EFM8SB1 Starter Kit (SLWSTK6200A) along with the C2 debug interface for real-time programming and debugging.

Categories

Microcontrollers > 8051
The 2026 Embedded Online Conference