AVR Microcontroller – ATMEGA minimale onderdelen

ATMEGA328

Minimale onderdelen voor een ATMEGA 328P: Bron

All you need apart from the programmer and the chip is a couple of decoupling caps, and some way of connecting the programming signals to the breadboard.

So:

  • 1 largish electrolytic cap (e.g. >100uF) You can maybe do without this if your source is nice and quiet (e.g. battery)
  • 1 100nF ceramic across the power pins of the micro
  • 1 10kΩ resistor to connect from the reset pin to Vcc to hold the micro out of reset.
  • Some jumper wire to connect up nodes on your breadboard (you can buy ready made jumper wires, but I use a 22AWG roll and cut my own – much cheaper if you do this a lot)
  • A header to plug your programmer cable into. According to the user guide it looks like you need a 2×3 pin 2.54mm pitch header.

Optional

  • A button to connect your reset line to ground if you wish to physically reset the chip (I don’t use AVRs, but I’m 99.9% certain the programmer can do this from the IDE)
  • A crystal to use instead of the internal oscillator
  • 2 * 22pF capacitors for the crystal (place from either side to ground)
  • Passive components, LEDs, sensors, etc in order to do something useful with the code you write ;-)

Apart from the header (which is 10-pin with some unused pins – you can use the labels as a guide for your connections, the names are the same) this schematic is about the simplest I could find with a quick Google:

Ander schema voorbeeld:

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