9.4 QSPI NOR Memory

The Microchip SAMA7D65 System-On-Module Series embeds the SST26VF064BEUIT-104I/MF, a 64 Mbit Serial Quad I/O™ (SQI™) Flash memory.

The SST26VF064BEUI SQI features a 6-wire, 4-bit I/O interface that allows for low-power, high-performance operation in a low pin-count package.

The SST26VF064BEUI also embeds EUI-48™ and EUI-64™ MAC addresses.

The SST26VF064BEUI is available in an 8-lead 6×5 mm WDFN package. For more information, refer to the SST26VF064BEUI data sheet (see Reference Documents).

Figure 9-2. QSPI Memory Block Diagram
Note: For debug purposes, the embedded QSPI Chip Enable can be uncoupled from the microcontroller. The QSPI0_CS_IN signal (pin 77) is accessible externally and can be decoupled from the QSPI0_CS_PB12 signal (pin 76) so that the boot can be unselected from the QSPI Flash memory during debug phases.