Page 1 of 1

ATmega1284 at 18.432 MHz

Posted: 25 August 2019, 10:45 AM
by rich
I wish to run a ATmega1284 at 18.432 MHz so can someone tell me how the fuses should be set ?

Thank you

Richard

Re: ATmega1284 at 18.432 MHz

Posted: 25 August 2019, 11:03 AM
by dkinzer
rich wrote:I wish to run a ATmega1284 at 18.432 MHz so can someone tell me how the fuses should be set ?
The settings for 17.4756MHz should work fine. We use FD:D2:D7 (ext:high:low) for the crystal-based 1284P devices. If you're using a resonator, you might need to adjust that slightly. Further, you might need to adjust the fuse settings that control the bootloader size.

The AVR Fuse Calculator may be helpful.

Posted: 25 August 2019, 17:16 PM
by rich
Thanks much.