آردوینو مگا 2560 – ARDUINO MEGA R3 با چیپ ATMEGA16U2

Intro

1. ATMEGA16U2 replacement chip 2011 version of ATMEGA8U2 , ISP FLASH capacity doubled, to facilitate a more powerful expansion and development needs. ATMEGA16U2 not only provides traditional USB to serial port function, but also allows users to program and define other functions by themselves. For example, the USB port can be configured as a mouse, keyboard, game joystick, camera, etc. Of course, these applications are still waiting for the duino team. Announce specific implementation plans.

2. The external interface adds SDA and SCL on the basis of the 2011 version (position on the left side of AREF). The IOREF interface can provide a voltage reference to the Shield. In addition, a port is reserved on the left side of IOREF for future compatibility of series products.

3. The RESET circuit is improved compared to the 2011 version. To prevent accidental resetting of RESET, the RESET circuit is more stable.

About Mega

Mega is a microcontroller development board with ATmega2560 as the core. It has 54 sets of digital I/O input/output terminals (14 of which can be used for PWM output), 16 sets of analog ratio input terminals, and 4 sets of UART (hardware serial ports). ), using 16 MHz crystal oscillator. Due to the bootloader, the program can be downloaded directly via USB without going through other external programmers. The power supply part can choose to supply power directly from USB, or use AC-to-DC adapter and battery as external power supply.

Due to the open source code and the C language development environment using the Java concept (cross-platform), the peripheral modules and applications of rduino have grown rapidly. The main reason for attracting artists to use rduino is that they can quickly use the rduino language to communicate with software such as Flash or Processing to make multimedia interactive works. The IDE interface developed by rduino is based on the principle of open source code, which allows you to download and use it for free in special production, school teaching, motor control, interactive works, etc.

Power design

 There are two options for Mega’s power supply system, USB direct power supply or external power supply. The power supply selection will automatically switch. AC-to-DC adapter or battery can be selected for external power supply. The limit voltage range of this control board is 6V~12V. Stable; if the voltage provided is greater than 12V, the voltage stabilizing device may have overheating protection, and it is more likely to damage the MEGA. Therefore, the recommended operating power supply is 6.5~12V, and the recommended power supply is 7V or 12V.

 Summary

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