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AT90USB1286-AU

MCHPAT90USB1286-AU

Microchip Technology
Larger AVR with more program memory and USB support for complex USB applications
NRND1,204 in stock

Overview

The AT90USB1286-AU is a high-performance 8-bit AVR RISC-based microcontroller featuring 128 KB of ISP Flash and a built-in USB 2.0 full-speed/low-speed Device and On-The-Go (OTG) controller. It provides 8 KB of RAM and 4 KB of EEPROM, making it suitable for complex USB peripherals that require significant memory overhead. The device operates at up to 16 MHz and includes a hardware multiplier and JTAG interface for advanced debugging.

Why Choose This Part

This MCU offers a seamless migration path for AVR developers needing USB connectivity without switching architectures. Its 128 KB of Flash is exceptionally large for an 8-bit USB microcontroller, allowing for extensive library integration and look-up tables. The inclusion of hardware USB OTG support and a 2-cycle multiplier provides a significant performance edge for data-intensive tasks.

Applications

USB to CAN/Serial Gateways
Utilizing the 128 KB Flash to manage large protocol stacks and buffering between USB and industrial interfaces.
Custom Human Interface Devices (HID)
Designing high-end mechanical keyboards or gaming controllers with complex macro storage and RGB lighting routines.
USB OTG Data Loggers
Acting as a USB host to save sensor data directly to thumb drives without requiring a PC.
Firmware-Heavy USB Peripherals
Applications requiring bootloaders and field-upgradability via the pre-programmed USB bootloader.

Getting Started

Developers can use Microchip Studio or the AVR-GCC toolchain for software development. The chip comes with a pre-programmed USB bootloader, enabling programming via the Flip software utility without an external programmer. For hardware debugging and JTAG programming, the Atmel-ICE or Power Debugger is recommended.

Part of AVR USB family » AT90USB1286

AT90USB1286 Family

Part NumberDifferenceStock
AT90USB1286-MU QFN 1,894

Also Consider

ATmega32U4-AU MCHPMicrochip Technology - A highly popular 8-bit USB MCU with a smaller package and lower cost for simpler HID devices.
ATSAMD21G18A-AU MCHPMicrochip Technology - A 32-bit ARM Cortex-M0+ alternative providing higher performance and lower power consumption for modern USB designs.
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