This Pro Micro 5V 16M Mini Leonardo Micro-controller Development Board.The Micro board is similar to the Arduino Leonardo in that the ATmega32U4 has built-in USB communication, eliminating the need for a secondary processor.
 
Specifications:
 
	
		
			
Microcontroller
			
			
ATmega32U4
			
		
		
			
Input Voltage(Recommended)
			
			
7-12V
			
		
		
			
Operating Voltage(VDC)
			
			
5
			
		
		
			
Input Voltage (limits)
			
			
6-20V
			
		
		
			
Digital I/O Pins
			
			
20
			
		
		
			
Analog Input Pins
			
			
12
			
		
		
			
DC Current per I/O Pin
			
			
20mA
			
		
		
			
DC Current for 3.3V Pin
			
			
50mA
			
		
		
			
PWM Pins
			
			
7
			
		
		
			
Flash Memory
			
			
32KB
			
		
		
			
EEPROM
			
			
2.5KB
			
		
		
			
SRAM
			
			
1KB
			
		
		
			
Clock Speed
			
			
16 MHz