External memory

nRF9151 SMA DK Hardware

The nRF9151 SMA DK has a 256 Mb (32 MB) external flash memory.

The memory is connected to the IC using the following GPIOs.

Table 1. Flash memory GPIO usage
GPIO Flash memory pin
P0.20 CS
P0.13 SCLK
P0.11 MOSI
P0.12 MISO
Figure 1. Flash memory
C42 100nF VDD EXT_MEM_CS EXT_MEM_MISO EXT_MEM_MOSI EXT_MEM_SCK IN 1-2 COM NC NO IN 3-4 pca 10201_switch_fsa.SchDoc CH1 CH2 CH3 CH4 4CH R38 1M0 EXT_MEM EXT_MEM_CTRL R35 100k VDD SCK CS MOSI MISO SPI VSS 4 VCC 8 CS 1 IO0/SI 5 IO2 3 SCLK 6 IO3 7 IO1/SO 2 PAD 9 U4 GD25WB256E CH1 CH2 CH3 CH4 4CH CH1 CH2 CH3 CH4 4CH