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AVR32DU32

MCHPAVR32DU32

MPN: AVR32DU32-I/PT
Microchip Technology
8-bit Microcontrollers - MCU 32KB, 4KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI
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Overview

The AVR32DU32-I/PT is a Microchip AVR 8-bit microcontroller with 32 KB of flash, 4 KB of SRAM, and a 24 MHz core. It integrates USB, a 10-bit ADC, two UARTs, SPI, and TWI, making it a compact general-purpose controller for small embedded designs.

It is aimed at applications that need simple control, basic analog input, and a built-in USB peripheral without moving to a larger 32-bit MCU family.

Why Choose This Part

The main advantages are the integrated USB peripheral, a useful mix of serial interfaces, and a small flash/SRAM footprint that is often enough for simple control firmware. The 8-bit AVR architecture can be straightforward for teams that already use the Microchip AVR toolchain and want a compact, low-complexity MCU.

Its peripheral set helps reduce external glue logic for basic embedded products, which can simplify the BOM and board layout.

Applications

USB peripheral devices
Useful for small USB-enabled controllers, configuration interfaces, and accessory devices that need native USB support.
Sensor interface nodes
Fits simple embedded nodes that read analog sensors through the on-chip ADC and communicate over UART, SPI, or TWI.
Industrial control glue logic
Good for low-complexity control tasks such as sequencing, status handling, and peripheral interfacing in equipment.
Prototyping and learning
A practical choice for compact breadboard or custom-board projects where a small AVR MCU is sufficient.
UART-to-USB bridge style designs
Can be used in designs that translate between serial peripherals and a USB host while also handling local control.

Getting Started

Use Microchip Studio or AVR-GCC with avr-libc for firmware development, and program the device with a Microchip-supported AVR programmer/debugger such as Atmel-ICE. For prototyping, start from a Microchip/AVR DU-series evaluation or development board if available, then verify clocking, USB device enumeration, and pin multiplexing early in bring-up. Pay close attention to the package footprint and the required decoupling, reset, and programming connections when moving to a custom PCB.

Part of AVR DA/DB/DD/DU family » AVR32DU

AVR32DU Family

Part NumberDifferenceStock
AVR32DU28-I/STX 28-I/STX 602
AVR32DU14-I/SL 14-I/SL 753
AVR32DU28-I/SS 28-I/SS 484
AVR32DU20-I/REB 20-I/REB 379

Also Consider

ATmega4809 MCHPMicrochip Technology - A familiar AVR alternative with more general-purpose I/O and broader hobbyist and production adoption.
STM32G030K8 STMicroelectronics - A low-cost Cortex-M0+ alternative when you want similar small-controller functionality with a 32-bit MCU.
PIC16F1779 MCHPMicrochip Technology - A PIC alternative with analog and peripheral integration for straightforward embedded control designs.