nRF5340 Audio DK v1.0.0

Requirements for external flash memory DFU

To enable the external flash DFU, you need an additional flash memory shield.

The nRF5340 Audio DK application uses the MX25R6435F as the SPI NOR Flash. See the following table for the pin definitions.

Table 1. Pin definitions
DK pin SPI NOR Flash pin Arduino pin
P0.08 SCK D13
P0.09 MOSI D11
P0.10 MISO D12
P1.10 CS D8
Note: If your current firmware is configured to do DFU using external flash, the flash shields must be connected for the kits to boot, even if DFU mode is not initiated.