The ARDUINO? Yun Mini uses the microcontroller ATmega32u4 and SoC (System on Chip) CPU QCA MIPS 24K. The Yun Mini also has integrated wireless LAN.Funktionen ARDUINO? Yun Mini: Qualcomm Atheros CPU OpenWRT WLAN (IEEE802.11b / g / n to 150 Mbit / s 1x1 2.4GHz) 20 digital I / O pins (7, which can be used as PWM outputs, 12 can be used as analog inputs) crystal oscillator, 16 MHz micro-USB connector ICSP pin header 2 reset buttons 1 user key 5 V operating voltage 5 V input voltage 16 MHz clock speed 64 MB RAM DDR2 (Linux) processor 16 MB flash memory ( Linux Processor)