EmbeddedRelated.com
    Parts    AVR DA/DB/DD/DU Family    AVR16DU    AVR16DU20-I/REB
AVR16DU20-I/REB

MCHPAVR16DU20-I/REB

Microchip Technology
8-bit Microcontrollers - MCU 16KB, 2KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI
Active436 in stock
Datasheet Mouser Compare Prices

Overview

The AVR16DU20-I/REB is a high-performance 8-bit microcontroller from Microchip's AVR DU family, featuring 16KB of Flash and 2KB of SRAM. Operating at up to 24MHz, this device integrates a Full-Speed USB 2.0 interface and a 10-bit ADC to bridge the gap between simple embedded control and modern connectivity requirements. It is designed for cost-sensitive applications that require robust USB communication without the overhead of complex 32-bit architectures.

Why Choose This Part

This MCU stands out by providing a native USB interface in a compact package while maintaining the ease of use associated with the 8-bit AVR architecture. It includes Core Independent Peripherals (CIPs) that reduce CPU load and power consumption by handling routine tasks in hardware. Additionally, the inclusion of multiple UART, SPI, and TWI interfaces makes it a highly flexible communication hub for multi-sensor systems.

Applications

USB Peripheral Bridging
Acting as a gateway between legacy UART/SPI/TWI sensors and a host PC via the integrated USB 2.0 interface.
Portable Handheld Devices
Utilizing the 10-bit ADC and low-power modes for battery-operated instruments that require data logging over USB.
Human Interface Devices (HID)
Implementing custom keypads, specialized game controllers, or mouse-emulation hardware.
Firmware Update Bridges
Providing a reliable USB bootloader path for updating system components in larger industrial or consumer products.

Key Specifications

Speed 24MHz
RAM Size 2K x 8
Core Size 8-Bit
EEPROM Size 256 x 8
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity CANbus, I2C, IrDA, SMBus, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 14
Core Processor AVR
Package / Case 20-VFQFN Exposed Pad
Data Converters A/D 11x10b
Oscillator Type External, Internal
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 20-VQFN (3x3)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Developers can begin evaluation using the AVR16DU20 Curiosity Nano evaluation kit. For firmware development, Microchip provides full support through the MPLAB X IDE or Microchip Studio, utilizing the XC8 compiler and the MPLAB Code Configurator (MCC) to simplify USB stack and peripheral initialization. Hardware debugging is best handled through an MPLAB PICkit 5 or Power Debugger using the UPDI interface.

Part of AVR DA/DB/DD/DU family » AVR16DU

AVR16DU Family

Part NumberDifferenceStock
AVR16DU28-I/SS 8-I/SS 591
AVR16DU28-I/STX 8-I/STX 637
AVR16DU32-I/RXB 32-I/RXB 445

Also Consider

ATmega16U2-AU MCHPMicrochip Technology - A classic AVR USB option with similar memory density often used as a USB-to-Serial converter in the Arduino ecosystem.
STM32F072C8T6 STMicroelectronics - Offers a jump to 32-bit performance with integrated USB support for applications requiring more processing power and larger SRAM.