Some chips work above their rated max frequency, some don't. I had a batch of AT90USB1287 chips which are only supposed to work up to 8MHz at 3.3V, about 95% of them would run fine at 16Mhz. I found this out by accident, I hadn't read about the 8MHz limitation in the datasheet... If this is a one-off device and you have a chip that runs at 16Mhz, you'll be fine. I would not do it for production though as sooner or later you will get some that don't work. -- Tim Mitchell [Non-text portions of this message have been removed]
Message
RE: [AVR-Chat] ATMEGA64L, ATMEGA64
2011-01-30 by Tim Mitchell