2.2 One-Time Programmable (OTP) Memory

SAM9X60 MPUs embed an OTP memory with 11.5 Kbytes of user area used to securely store the following:

  • Boot Configuration Packet
  • Secure Boot Configuration Packet
  • Keying material
  • Certificate hashes

Once the data is written and permanently locked, it becomes tamper-resistant, forming the device’s hardware Root of Trust.