AVR-Chat

Thanks Don.

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> To: AVR-Chat@yahoogroups.com
> From: dkinzer@easystreet.net
...
always write a quick program to toggle an output pin or generate a signal using a timer. Also, some AVRs have a "CLKOUT" signal which will make available a full-swing clock signal on an I/O pin.
>
> There are a lot of options for a usable external clock signal. The venerable 555 timer can be used to generate a clock signal, for example.
>
> Depending on the frequency of the external signal that you use, you may have to re-configure your programmer to run at at a lower frequency. I think the general rule for ISP programming is that the ISP clock must be no more than 1/4 of the operating frequency of the device being programmed.
>
> Don Kinzer
> ZBasic Microcontrollers
> http://www.zbasic.net
>