November 8, 2013
I resolved the issue, the bootloader board I made had the MISO/MOSI pins still powered. This caused it to not fully cycle when the 3.3V line was disconnected, but when the system was disconnected the ATMEGA328 was able to properly power down.
I am trying to run the FTDI with my ATMEGA328 (32 QFN) running at 3.3V, the internal fuses have been set for no brownout and internal clock. The FTDI seems to pull down the 3.3 TX and no data streams, is there an internal level shifter, or is this actually meant for 5V devices?
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