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.
