Model MB-MICRO Quantity 1 Color White + black Material FR4 Features Freaduino Micro is a 100% compatible ungraded version adding voltage shift between 3.3V and 5.0V; 4 layer wire displacement increasing stability Specification Operating Voltage 3.3V or 5V; Input Voltage (recommended) 7-12V; Input Voltage (limits) 6-20V; Digital I/O Pins 20; PWM Channels 7; Analog Input Channels 12; DC Current per I/O Pin 40mA; DC Current for 3.3V Pin 50mA; Flash Memory 32 KB (ATmega32u4) of which 4 KB used by bootloader; SRAM 2.5 KB (ATmega32u4); EEPROM 1 KB (ATmega32u4); Clock Speed 16 MHz Application Used for Arduino developing experiment learning SCM and DIY Program research and development English Manual/Spec No Packing List 1 x Development board