This density and interface suit code-shadowing in embedded systems where the MCU executes directly from the Flash, or for storing large firmware images with fast readback.
66 MHz Quad I/O — throughput for code shadowing
Quad I/O at 66 MHz delivers a sustained read throughput that keeps a Cortex-M or RISC-V core fed during execute-in-place operation. The 256 Mbit density holds a full Linux kernel or a multi-megabyte application image with room for a redundant copy. For designs that boot from SPI NOR, the 32M x 8 organization maps cleanly to a linear address space — no bank switching needed below the 256 Mbit boundary.
That removes the sourcing risk of chasing obsolete NOR parts for a design that still has years of field life ahead.
