Arduino ATmega2560-16AU is the newest and most powerful arduino board. Comparing to ATmega 128 it has the following 2 new features:
http://www.siliconray.com/arduino-atmega2560-16au.html
1. ATMEGA2560 is used, the memory size is doubled comparing to ATmeaga 128
2. ATmega8U2 is used as replacement of FT232RL as USB bridget. Besids USB-UART bridge, it can also be configured as mouse, joystick, camera or keyboard.Features
| Microcontroller | ATmega2560 | |
| Operating Voltage | 5V | |
| Input Voltage (recommended) | 7-12V | |
| Input Voltage (limits) | 6-20V | |
| Digital I/O Pins | 54 (of which 14 provide PWM output) | |
| Analog Input Pins | 16 | |
| DC Current per I/O Pin | 40 mA | |
| DC Current for 3.3V Pin | 50 mA | |
| Flash Memory | 256 KB of which 4 KB used by bootloader | |
| SRAM | 8 KB | |
| EEPROM | 4 KB | |
| Clock Speed | 16MHz |
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