Description:  - Onboard the most basic circuits based on MCU, such as crystal oscillator circuit, power conversion circuit and USB interface, etc.  - The core board brings out the common I/O port resources.  - Added EEPROM peripherals to expand the memory circuit.  - The SWD simulation debug download interface is introduced.  - It uses the Mirco USB interface that is commonly used in smartphones today. It is easy to use and can do USB communication and power supply.  - With its own power supply voltage regulator chip, the power inlet/outlet is equipped with a tantalum capacitor, which has an extraordinary effect in filtering and voltage regulation.  - Equipped with high quality 2.54mm spacing of single rows of pins, ensuring excellent conductivecontact.     Specification:   Core: ARM 32-bit Cortex-M3;  Work Frequency: 72MHz;  Flash Memory: 512K Byte Flash,64KByte RAM;  Working Voltage: 2.0~3.6V;  Power supply: 3.3V regulator chip, maximum output 1000mA;  Size: 62.48x44.7mm/2.46x1.76 inch;  Color: Blue;    Package Included:  1 x ARM STM32 Minimum System Development Board