: SoftDevice memory usage

SoftDevice memory usage

The SoftDevice shares the available flash memory and RAM on the nRF52 System on Chip (SoC) with the application. The application must therefore be aware of the memory resources needed by the SoftDevice and leave the parts of the memory used by the SoftDevice undisturbed for correct SoftDevice operation.

The SoftDevice requires a fixed amount of flash memory and RAM, which are detailed in Memory resource requirements. In addition, depending on the runtime configuration, the SoftDevice will require:

Additional RAM for Bluetooth® Low Energy roles and bandwidth (see Role configuration)
Attributes (see Attribute table size)
Security (see Security configuration)
UUID storage (see Vendor specific UUID counts)

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