I recently got a batch of 1200As, and after I got them, I found out they were set from the factory to use the internal RC osciallator. I need these chips to clock externally. I fount that I need to set bit 0 in the RCEN fuse, but how do I do that? Is this byte a byte in the normal EEPROM? And if so, what is its hex address?
I have FbPrg16, Ponyprog 1.7, and a general purpose burner with an AVR adaptor. None of these have the option to toggle RCEN in a 1200A. The only one that comes close is FbPrg16, and it has that feature for the Atmel 2343s.