sQSPI

This documentation outlines the soft peripheral sQSPI. It covers setup, integration, and operational guidelines for using sQSPI through the nrfx driver API, alongside detailed descriptions of limitations and performance considerations.

To better understand the capabilities and limitations of sQSPI, see its comparison with the standard QSPI:

Feature	QSPI support	sQSPI support
DDR Clocking	Yes	No
Execute in Place (XIP)	Yes	No
Synchronous Serial Protocol (SSP)	Yes	No
MICROWIRE	Yes	No
JEDEC xSPI	Yes	No
HyperBus	Yes	No
Data masking	Yes	No
SPI dynamic wait state	Yes	No
Multi-master bus topologies (arbitration)	Yes	No
Clock stretching	Yes	No
Toggling CS high between data frames - Target Select Toggle Enable (SSTE)	Yes	No
QSPI address or command lengths using 4-bit increments	Yes	No

Subpages:

• sQSPI features
• sQSPI nRF54L Series porting guide
• sQSPI nRF54H Series porting guide
• sQSPI and display usage
• sQSPI and FLPR counters
• Timing parameters
• sQSPI changelog
• sQSPI limitations
• API Reference