nRF54L One-Time Programmable memory map for nRF Connect SDK
The nRF54L Series devices are equipped with emulated One-Time Programmable (OTP) memory, designed to store assets permanently and in a non-volatile format.
This memory is a part of the User Information Configuration Register (UICR) memory space.
It can only be programmed with non-0xFFFFFFFF values, and it is possible only once after an erase all operation.
The OTP is organized into 4-byte words and is mapped as the UICR.OTP[] array.
For details, refer to the datasheet for the specific device model.
The allocation of this memory is determined by the software, and the nRF Connect SDK reserves a part of it for its own usage.
|
Size (4-byte words) |
Assignment |
Description |
|---|---|---|---|
0 - 287 |
288 |
|
Used for bootloaders and secure firmware storage realization. |
288 - 319 |
32 |
Custom usage |
Available for custom, user-defined purposes. |