Hi Everyone,
I would like to use external 16mhz crystal osc. for my attiny85. Which fuse setting do I need to use?
From the Atmel ATtiny25,45,85 data sheet.
To drive the device from an external clock source, CLKI should be driven as shown in Figure 6-4. To run the device on an external clock, the CKSEL Fuses must be programmed to “00”.
If you install the ATTinyCore core it is easy to select the clock source and speed and bootload the device. It is the best core that I have found for tiny85. The core is available via the IDE board manager.
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