On-board QSPI Flash
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9 On-board QSPI Flash
The GR5515 SK Board integrates a 32 MB QSPI flash, to expand flash memory and store application data.
Figure 9-1 Expanded QSPI flash schematic diagram
Note:
• QSPI flash pins, buttons (UP, LEFT, RIGHT, DOWN), and Arduino Uno Shield Connectors pins (GPIO8 and GPIO9)
multiplex. By default, the zero-ohm resistor is disconnected, and QSPI flash pins do not work.
• To use QSPI flash pins, disconnect these pins from buttons, GPIO8, and GPIO9, and solder a zero-ohm resistor
at the corresponding DNI resistance part.
Figure 9-2 Connections shared by buttons and QSPI flash pins
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