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Tiny USB ATMEGA32U4 Development Board compatible Arduino - Black
Microcontroller: ATmega32u4 Clock Speed 16 MHz Operating Voltage: 5V DC Digital I/O Pins 10 PWM Channels: 4 Analog Input Channels 5 Communication interface: SPI£¬ I2C£¬ UART Flash Memory 32 KB of which 4KB used by bootloader SRAM 2.5 KB EEPROM 1 KB