The detailed discussion of the ATMEGA 2560 is out of the scope of this post anyhow the detailed discussion on the chip will be followed in the later posts. Note here that the pin names of the microcontroller IC is different from the pin names of the Arduino MEGA. The microcontroller IC is the 100 pin package and is 8 bit microcontroller chip.As described earlier that the Arduino MEGA is based on the ATMEGA 2560 the pinout of the ATMEGA 2560 microcontroller chip is shown in the following figure:.The discussion on the JTAG will be followed in the post later. One additional feature of the Arduino MEGA is that this board also has the JTAG port.Out of these 54 digital input / output pins fifteen are PWM (Pulse Width Modulation) enabled pins. Arduino MEGA has four UARTS for serial communications, one Serial Peripheral Interface computer bus and one I2C (Inter-Integrated Circuit) computer bus.Note that the Arduino UNO has much lesser Digital Input / Output pins and Analog pins than Arduino MEGA board. Arduino MEGA has total 54 digital input / output pins and sixteen analog pins.This microcontroller chip is different from the ATMEGA328P in terms of the digital Input / Output pins, Analog pins and other basic features which will be discussed in detail.Arduino MEGA is the open-source microcontroller development board based on the ATMEGA 2560 microcontroller IC. ![]() So sit back, keep reading and enjoy learning. In this post ( ARDUINO MEGA FOR BEGINNERS)I will discuss the overview of the Arduino MEGA board, pinout of the Arduino MEGA, specifications of the Arduino MEGA, microcontroller IC on which Arduino MEGA is based and finally the comparison of the Arduino UNO board with the Arduino MEGA board. In the previous post I have discussed about brief introduction of the Arduino MEGA there I have discussed about the Arduino MEGA board, specifications of the Arduino UNO, microcontroller IC on which Arduino UNO is based, applications of the Arduino UNO and the programming of the Arduino MEGA. Lastly, if I add my own SD card, is there a chip of some sort needed? Or do the pins go directly to the ICSP pins? My existing shield looks like it has a real small ship with no markings that I can see.In this post I will discuss about the detailed ARDUINO MEGA FOR BEGINNERS. ![]() Let’s say I have to make one or decide to make one of my own for whatever reason… The ICSP header I would want to use would be a long pinned female type connector pass-thru hole … ? I did not find this part in the large list of parts. ![]() It seems one can make an adapter shield with jumpers of some sort that can ‘map’ the functionality of the SPI pins between 11, 12, 13 to the ICSP header, maybe another setting to make the pins pass-thru to other shield, etc.īefore going down this path, surely someone has done this already or there is some obvious problem that I am missing. Most of my shields use the SPI pins on the Uno, 11, 12, 13 I believe they are… Plugged in my card only to find the SPI pins on the mega have moved to the ICSP header. My project has exceeded the capacity of an Uno and was looking to use a Mega 2560. I have a test shield for the Uno that has a built-in SD card. Very new to Fritzing, it is awesome! Thank you.
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