ATMEGA32U4-MU
Microchip TechnologyATMEGA32U4-MU is the VQFN-44 order code for Microchip's ATmega32U4 8-bit AVR microcontroller with native USB — for USB keyboards, game controllers, data loggers and embedded devices that emulate USB peripherals without a bridge chip. The integrated full-speed USB device controller with 32 KB Flash and 2.5 KB SRAM is the selection point: one chip handles the application and the USB link, with the bootloader field proven by the Arduino Leonardo ecosystem. Selection advice: the MU suffix denotes the 44-pin VQFN (MLF) package in tray packing — the reel form is ATMEGA32U4-MUR, and the TQFP-44 sibling ATMEGA32U4-AU is on this site for designs that need hand-solderable leads; the two packages are not footprint-compatible. The family is rated -40 to +85 °C. The RC order codes (ATMEGA32U4RC-*) are a separate internal-RC-oscillator variant family — do not substitute them for the crystal-oscillator codes without checking your USB clock plan. Parameters verified against the Microchip ATmega32U4 datasheet (7766).
- MPN
- ATMEGA32U4-MU
- Manufacturer
- Microchip Technology
- Family
- 8-bit microcontroller
- Package
- VQFN-44
- Manufacturer channel coverage
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