14.5.3.2 Entering FFPI Mode

To enter FFPI mode, follow the steps below:

  1. Apply the supplies as described in figure and table above.
  2. Apply XIN within the VDDCORE POR reset time-out period, as defined in the section “Electrical Characteristics”.
  3. Wait for the end of this reset period. Set JTAGSEL and TST to 0V during the entire FFPI operation.

The FFPI Monitor also requires that:

  • Boot mode (BM) in GPNVM is either 0b0000 (SAM-BA Monitor) or 0b0011 (Standard boot)
  • SECURITY bit is 0 in GPNVM