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EFM8UB20F64G-B-QFN32R

SiLEFM8UB20F64G-B-QFN32R

Silicon Labs
CIP-51 8051 Universal Bee Microcontroller IC 8-Bit 48MHz 64KB (64K x 8) FLASH 32-QFN (5x5)
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Overview

The EFM8UB20F64G-B-QFN32R is a high-performance 8-bit microcontroller from Silicon Labs' Universal Bee family, featuring a pipelined 8051 core capable of 48 MHz operation. It is specifically designed for USB-enabled applications, integrating a full-speed USB 2.0 controller with a high-precision internal oscillator that eliminates the need for external crystals. This device combines 64KB of flash memory with a versatile peripheral set including a 10-bit ADC and multiple serial interfaces in a compact 32-pin QFN package.

Why Choose This Part

This MCU stands out for its crystal-less USB operation, utilizing an internal oscillator accurate to +/-0.25 percent with USB clock recovery. The pipelined 8051 core executes 70 percent of instructions in just 1-2 clock cycles, providing significantly higher throughput than traditional 8051 architectures. Additionally, the integrated 5V-to-3.3V LDO and flexible peripheral crossbar simplify PCB layout and reduce total bill-of-materials cost.

Applications

USB Peripheral Controllers
Ideal for creating crystal-less USB devices like HID-class peripherals, custom bridges, and communication adapters.
Industrial Control Interfaces
Utilizes the high-sink/source I/O and hardware serial blocks for robust communication in industrial environments.
Consumer Electronics Docking
Acts as a system controller for docking stations and charging hubs requiring USB connectivity and power management.

Key Specifications

Speed 48MHz
RAM Size 4.25K x 8
Core Size 8-Bit
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity I2C, SMBus, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 25
Core Processor CIP-51 8051
Package / Case 32-VFQFN Exposed Pad
Data Converters A/D 20x10b
Oscillator Type Internal
Program Memory Size 64KB (64K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 32-QFN (5x5)
Voltage - Supply (Vcc/Vdd) 2.65V ~ 3.6V

Getting Started

Engineers can begin development using the Simplicity Studio IDE, which provides pre-configured libraries and a hardware configuration tool. The EFM8UB2 USB Starter Kit (EFM8UB2-STK) is the recommended hardware platform for rapid prototyping. Programming and debugging are supported via the integrated C2 interface using standard Silicon Labs USB debuggers.

Categories

Microcontrollers > 8051