MCHPAT90USB1286-AU
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
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.
AT90USB1286 Family
| Part Number | Difference | Stock |
|---|---|---|
| AT90USB1286-MU | QFN | 1,894 |



