AT90USB1286-AU

Microcontrollers Overview

The AT90USB1286-AU is an 8-bit AVR microcontroller featuring a 128 kB ISP Flash memory, 4 kB EEPROM, and 8 kB internal SRAM. It operates at a maximum clock frequency of 16 MHz with a supply voltage range of 2.7 V to 5.5 V. The device includes a USB 2.0 full-speed/low-speed device and on-the-go module, 48 programmable I/O lines, and a 10-bit ADC with 8 channels. It supports JTAG debugging, SPI, USART, and two-wire serial interfaces within a 64-lead TQFP package.

Microcontrollers Feature Summary

• Integrated USB 2.0 full-speed/low-speed device and on-the-go module compliant with Universal Serial Bus specification REV 2.0
• Advanced RISC architecture achieving up to 16 MIPS throughput at 16 MHz with single-clock-cycle execution for most instructions
• In-system self-programmable Flash with true read-while-write operation and factory pre-programmed default USB bootloader
• Comprehensive peripheral set including four flexible Timer/Counters, 8-channel 10-bit ADC, and IEEE std. 1149.1 compliant JTAG interface

Microcontrollers Applications

• Embedded control applications requiring USB connectivity
• Industrial systems utilizing the industrial temperature range
• Devices requiring in-system programming via USB or SPI
• Applications needing hardware-based debug support through JTAG

Microcontrollers Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 64-lead TQFP configuration. Confirm that the factory pre-programmed USB bootloader aligns with the intended application firmware strategy before procurement.

Microcontrollers Selection Notes

Select this component when a high-performance 8-bit AVR core is required alongside integrated USB capabilities. The 128 kB Flash capacity suits complex embedded applications. Consider the 64-lead TQFP package for board space constraints. Verify power supply requirements fall within the 2.7 V to 5.5 V operating range for reliable performance.

Microcontrollers Part Context

This part belongs to the AT90USB64/128 family of 8-bit microcontrollers based on the enhanced RISC architecture. It shares architectural similarities with the AT90USB647 but offers double the Flash and SRAM capacity. The series is designed for cost-effective solutions in embedded control applications requiring non-volatile memory and USB integration.

Microcontrollers Replacement Considerations

AT90USB1287-AU: Offers identical specifications with QFN packaging instead of TQFP.