Hi, I have LPT (ISP AVR) programmer, (
- posted
18 years ago
Hi, I have LPT (ISP AVR) programmer, (
I have had a case where the SPIEN fuse got set somehow by disconnecting during programming. This means that the ATmega8 can only be (re)programmed in Parallel (High Voltage) mode. If you don't have such a programmer to hand, it is probably simpler and cheaper to throw the chip away ...
Dave
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Another way that Atmels can appear to die through mis-programming is if the oscillator type gets set to something incompatible with the on-board connections, in particular, if the application uses the internal oscillator, and the fuses get set to an external oscillator type, then further programming is not possible. Fortunately this situation can easily be recovered by applying an extarnal clock source to the OSC In pin while reprogramming the oscillator fuses.
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