Go Down

Topic: How to enable the External Occillation. (Read 983 times) previous topic - next topic

retrolefty


Hi Thanks for quick response.  so is there other way to speed the clock speed of atmega328?


Running a 328p chip at greater then 20MHz via an external crystal resonator or an external crystal oscillator is called 'overclocking'. Some people have experimented with doing that and maybe reached 30Mhz or maybe a little higher, I forget the speed they got to, but it's certainly not a recommended practice to run faster then ATMEL ratings and the chip will run hotter and may need some kind of cooling to prevent chip damage when playing with 'overclocking'.

Lefty

shelleycat

What are you trying to do?  Are you sure that speed is needed?

dsese1234

Hi Guys, Thank you, I appreciated for those answer,I am taking the experiment of "overclocking"  and let see. ;)  i will be back, please put more suggestion here.







Tom Carpenter

It won't go much beyond 20MHz.

I tried running an atmega1284 at 24MHz (bought the wrong crystal by mistake) and while it ran, anything that tries to use the SRAM for more than a couple of bytes causes it to crash.

If you want a faster processor, get a Due (when it comes out) or an atxmega chip (someone made a core for them i think).
~Tom~

Udo Klein

If you really need an Atmega at higher speeds use an FPGA that can execute an atmel core at the required speed. However almost anything else is a simpler solution. Get a faster processor and that's it.
Check out my experiments http://blog.blinkenlight.net

Go Up