I'm specifying an ADXL343 as a component in a very small, inexpensive consumer electronics device that has no processing unit capability. I would like to use the double tap function to trigger an audio playback chip by pulling the int pin low on double tap. I didn't see any documentation in the datasheet talking about hardcoding registers and wonder how one does this or if it is possible to modify / store register settings on the chip even during power off.
Cost is the primary driver for not having a MCU on the board.
Thanks for your help.