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The newly updated DFRduino Mega2560 enhances its VIN power supply circuit by replacing the traditional LDO with a DC-DC circuit, significantly improving safety and reliability. This change not only addresses overheating issues but also broadens the input voltage range, allowing the board to operate even with just a 3.7V lithium battery.
This microcontroller, based on the ATmega2560, provides full compatibility with the Arduino MEGA2560 platform. It is equipped with 54 digital I/O ports, 16 analogue input ports, 4 UARTs (hardware serial ports), and a 16 MHz crystal oscillator. The Mega2560 includes a bootloader, providing direct program downloads via USB. You have the flexibility to power the board using a USB cable, a standard adapter, or an external battery. It also features 256KB of FLASH memory—doubling that of the Mega1280—providing decent space for larger and more complex projects.
| Working voltage | 5V |
| CPU Frequency | 16MHz |
| TIO ports / PWM | 54 / 15 |
| Analog inputs | 16 |
| UART | 4 |
| I2C | 2 |
| SPI | 1 |
| Interrupt pins | 2 |
| EEPROM[KB] | 4 |
| Flash[KB] | 256 |
| SRAM[KB] | 8 |
| USB | A-B USB cable |
| Dimension | 100 x 53 x 15mm |
| Vin | 7-12V |
| Weight（g） | 70 |
| IDE version | Arduino 1.0 and above |
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