ATMEGA32U2-AU

8-bit AVR Microcontroller with 32K Bytes of ISP Flash and USB ControllerFeatures: Parameter Value Flash (Kbytes): 32 Kbytes Pin Count: 32 Max. Operating Freq. (MHz): 16 MHz CPU: 8 bit AVR Max I/O Pins: 22 Ext Interrupts: 20 USB Transceiver: 1 USB Speed: Full Speed USB Interface: Device SPI: 2 TWI (I2C): 0 UART: 1 CAN: 0 Ethernet: 0 Analog Comperator: 1 Resistive Touch Screen: No DAC Resolution (bits): 0 SRAM (Kbytes): 1 EEPROM (Bytes): 1024 Self Program Memory: YES External Bus Interface: 0 Temp. Range (deg C): -40 to 85 I/O Supply Class: 2.7 to 5.5 V Operating Voltage (Vcc): 2.7 to 5.5 V Timers: 2 Output Compare channels: 5 Input Capture Channels: 1 PWM Channels: 4 32kHz RTC: No Calibrated RC Oscillator: Yes