List of arduino compatible microcontrollers

Using Arduino Microcontrollers
1

Hi!
Does it exsist a list of arduino compatible (AVR) microcontrollers somewhere?
It would be nice I if I can make a project and use a suited microcontroller.

I know about these:
attiny13
attiny44/84
attiny45/85
attiny2313
attiny4313
atmega8
atmega168
atmega328
atmega644
atmega1280
atmega1284
atmega2560

1 Like
2

Have you tried the Atmel web site...?

There's only a few variants that are important. They are (classed by number of pins):

Tiny85 - 8 pins
Tiny84 - 14 pins
Tiny4313 - 20 pins
Mega328 - 28 pins (Arduino Uno)
Mega2560 - 64 pins (Arduino Mega)

There's variations of each with different amount of memory but they're not necessarily cheaper on the street because they have less memory.

eg. The Tiny85 family has Tiny85/Tiny45/Tiny25 with 8K/4K/2K of program memory. The first digit in the number is the amount of memory, the second is the family.

3

Further supported mega chips:
Mega1280
Mega1284/644/324
Mega8
Mega88/168

Along with the Tiny chips you have listed, the following should work:
Tiny87/167 [I'm about to add support to my tiny core for these as I will be using them in a project]
Tiny861/461
Tiny88/48
Tiny24
Tiny25

4

Hey. Found that information on the findings, it is really so? Thanks in advance.

http://bigbarrel.ru/attmega328/

5

Make sure you have the proper letters after the chip name also, as the "signature bytes" vary.

For example, the 1284 & 1284P (with 16K of SRAM, the most of Any of the 8 byte AVRs) have
ATmega1284 0x1E 0x97 0x06
ATmega1284P 0x1E 0x97 0x05

Same with the 328/328P:
ATmega328 0x1E 0x95 0x14
ATmega328P 0x1E 0x95 0x0F

Sometimes the hardware difference is small, like drawing a little less power, or having additional brownout selections.

A part like the 644 has bigger differences besides the signature bytes - '644 has 1 hardware USART, while '644P has two.

I believe Nick Gammon's bootloader sketch covers several of the varieties, more so than the unmodified Arduino installation does.

6

I was making up a new boards.txt file to capture all the varieties.
I don't have a lot of these chips. Some would require additions to avrdude.conf also.
This excel sheet capture a lot of the data in one place, from the various Atmel data sheets.

avrdude.conf (585 KB)

boards.txt (20.6 KB)

chip comparison.xls (56 KB)

7

Mega2560 - 64 pins (Arduino Mega)

100 pins.

Rob