The nRF7002 DK has a 64 Mb external flash memory. The memory is connected through a regular high-speed Serial Peripheral Interface (SPI) .
The memory is connected to the chip using the following General-Purpose Input/Output (GPIO)s:
| nRF5340 GPIO | Flash memory pin |
|---|---|
| P0.11 | CS |
| P0.08 | SCLK |
| P0.09 | MOSI |
| P0.10 | MISO |
Figure 1. Configuring GPIOs for external memory
By default, the power supply of the external memory comes from the VDD domain. There are two optional power sources for keeping the external memory powered: VDD and VDD_MEAS. If VDD_MEAS is selected, the power consumption of the external memory is added to the nRF7002 current measured on P22. See the following table for configuration:
| Power source | Solder bridge | Default state |
|---|---|---|
| VDD | SB8 | Shorted |
| VDD_MEAS | SB10 | Open |