CH340 Arduino MEGA 2560 With Cable
CH340 overview
The Mega 2560 is a microcontroller board base on the CH340. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, 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 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 to the Mega, which it replaces. The Mega2560 differs from all preceding boards 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.
Key specifications
Datasheet
CH340 features
- ATmega2560 processor running at 16MHz
- CH340 Serial to USB converter
- 256KB Flash memory
- 54 Digital I/O
- 15 PWM shared with the digital I/O
- 16 Analog inputs that can also be used as digital I/O for a total of up to 70 digital I/O
- 4 Hardware serial ports
- 5V Operation
CH340 specifications
| Microcontroller | CH340 |
|---|---|
| Operating Voltage | 5V |
| Input Voltage (limits) | 6-20V |
| Input Voltage (recommended) | 7-12V |
| Digital I/O Pins | 54 (of which 15 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 8 KB is used by the bootloader |
| SRAM | 8 kb |
| EEPROM | 4 kb |
| Clock Speed | 16 MHz |
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