The new version of DFRduino Mega2560 has improved the VIN power supply circuit by changing the easily overheat LDO to DC-DC circuit for ensuring safety and reliability in long-term use. In addition to optimizing the overheating issue, it offers a wider input voltage range. What’s more, DFRduino Mega2560 can work steadily even when only powered by a 3.7V lithium battery.
DFRduino Mega2560 is an ATmega2560-based microcontroller that provides full compatibility with "Arduino MEGA2560“. It features 54 digital I/O ports, 16 analog signal input ports, 4 UARTs(hardware serial ports), and a 16MHz crystal oscillator. The board comes with a bootloader that enables users to download programs directly via a USB. You can simply power it with a USB cable or a standard adapter or use a battery as external power. Mega 2560 has 256KB FLASH, two times of Mega1280, which could offer a larger create space for your projects.
Specification
Controller Model: ATmega2560
Operating Voltage: 5V
Input Voltage(VIN): 3-16V(20V max)
Digital I/O Pins: 54 (of which 15 provide PWM output)
Analog Inputs: 16 I/O
FLASH: 256 KB (of which 4 KB is used by the bootloader)
SRAM: 8KB
EEPROM: 4KB
Frequency: 16MHz
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