Arduino Leonardo ETH (A000022)

The Leonardo ETH is a microcontroller board based on the ATmega32U4 (datasheet) and the new W5500 TCP/IP Embedded Ethernet Controller (datasheet). 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 RJ45 connection, a micro USB connector, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

The Leonardo ETH differs from the preceding Ethernet board in that the ATmega32u4 has built-in USB communication, eliminating the need for an external USB-to-serial converter. This allows the Leonardo ETH to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behaviour of the board. Plus, it has the new W5500 TCP/IP Embedded Ethernet Controller onboard.

Summary:

• Microcontroller: ATmega32u4
• Operating Voltage: 5V
• Input Voltage Plug (recommended): 7-12V
• Input Voltage Plug (limits): 6-20V
• Input Voltage PoE (limits): 36-57V
• Digital I/O Pins: 20
• PWM Channels: 7
• Arduino Pins reserved:
  • 4 used for SD card select
  • 10 used for W5500 select
• Analog Input Pins: 12
• DC Current per I/O Pin: 40 mA
• DC Current for 3.3V Pin: 1A (only when powered via the external power supply)
• Flash Memory: 32 KB (ATmega32u4) of which 4 KB used by bootloader
• SRAM: 2.5 KB (ATmega32u4)
• EEPROM: 1KB (ATmega32u4)
• Clock Speed: 16 MHz
• W5500 TCP/IP Embedded Ethernet Controller
• Power Over Ethernet ready Magnetic Jack
• Micro SD card, with active voltage translators

Downloads:

• Egale File
• Schematic
• IDE