Technical
Core ArchitectureAVR
Data Bus Width8 b
Frequency16 MHz
HS Code8542.31.0015
InterfaceI2C, I2S, SPI, UART, USART, USB
Max Frequency16 MHz
Max Operating Temperature85 °C
Max Supply Voltage5.5 V
Memory Size32 kB
Memory TypeFLASH
Manufacturer Package IdentifierATMEGA32U4-AU
Min Operating Temperature-40 °C
Min Supply Voltage2.7 V
Number of ADC Channels12
Number of I2C Channels1
Number of I/Os26
Number of Programmable I/O26
Number of PWM Channels8
Number of SPI Channels1
Number of Timers/Counters5
Oscillator TypeExternal
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
RAM Size2.5 kB
Schedule B8542310000
Watchdog TimerYes