This board is a microcontroller board based on the ATmega32u4 (Arduino® Compatible leonardo). It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
Features:

1. 100% compatible with Arduino® LEONARDO

Specifications:

1. microcontroller: ATmega32u4
2. operating voltage: 5 VDC
3. input voltage (recommended): 7-12 VDC
4. input voltage (limits): 6-20 VDC
5. digital I/O pins: 20
6. analogue input pins: 12
7. PWM channels: 7
8. DC current per I/O pin: 40 mA
9. DC current for 3.3 V pin: 50 mA
10. flash memory: 32 kB (ATmega32u4) of which 4 kB used by bootloader
11. SRAM: 2.5 kB (ATmega32u4)
12. EEPROM: 1 kB (ATmega32u4)
13. clock speed: 16 MHz
14. length: 68.6 mm
15. width: 53.3 mm
16. weight: 20 g

vma100_vma101_vma102_vma103_a4v01.pdf

ce_rohs_open.pdf