YINGHUA AT90USB82-16MU 32-VQFN semiconductor

Microcontroller IC for USB Projects

The YINGHUA AT90USB82-16MU is a 32-pin microcontroller supplied in a compact VQFN package. It integrates a USB 2.0 device interface with an 8-bit AVR core for embedded control tasks. Engineers select this IC when a design requires native USB connectivity without an external PHY. The part is listed as new and was first catalogued in 2026.

Suits USB Device Designs Not Host Roles

This device targets developers building USB peripherals such as keyboards, sensors or custom HID classes. It operates at 16 MHz and provides 82 KB of flash memory for firmware storage. Builds that need USB host or OTG capability must choose a different controller. Applications requiring more than 32 I/O pins or higher clock speeds should also evaluate alternatives.

82 KB Flash Decides Firmware Fit

The on-chip flash capacity of 82 KB is the primary constraint for firmware sizing. Projects with large libraries, extensive lookup tables or RTOS kernels may exceed this limit. Verify that the compiled binary fits comfortably before committing to this IC. The 32-VQFN footprint also fixes the available pin count for the PCB layout.