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Arduino Mega 2560 Pro - CH340
MEGA 2560 R3 Upgraded version CH340 + USB cable
The Mega 2560 is a microcontroller board based on the CH340. It has 54 digital input / output pins (15 of which can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16MHz crystal oscillator, a USB connector, a power connector, an ICSP header, and a reset button. It includes everything needed to support the microcontroller; just plug it into a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started. The Mega is compatible with most shields designed for the Duemilanove or Diecimila.
The Mega 2560 is an update of the Mega, which it replaces.
The Mega2560 differs from all previous cards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the CH340 programmed as a USB to serial converter.
Revision 2 of the Mega2560 board has a resistor that pulls the 8U2 HWB line to ground, making it easier to put into DFU mode.
Revision 3 of the board has the following new features:
1.0 pinout: Added SDA and SCL pins which are near the AREF pin and two other new pins placed near the RESET pin, the IOREF that allows the shields to adapt to the voltage applied provided by the board. In the future, shields will be compatible with both the board that the AVR uses, operating at 5V, and the Due that works at 3.3V. The second is an unconnected pin, which is reserved for future purposes.
Stronger RESET circuit.
Atmega 16U2 replaces the 8U
Microcontroller - CH340
Working voltage - 5V
Input voltage (recommended) - 7-12V
Input voltage (limits) - 6-20V
Digital I / O Pins - 54 (of which 15 with 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 8 KB used by bootloader
SRAM - 8 KB
EEPROM - 4 KB
Clock speed - 16 MHz