I'm looking for a way to use an external nonvolatile memory device to store the program for an ATmega103L. Can the ATmega103L access external program memory, or is external memory strictly data memory?
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The external memory is strictly data memory. All code to be executed needs to be programmed into the internal flash memory. The device is in-system programmable, so you can update the code in a device, but you'll need an external microcontroller (or similar) to perform it.
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