The Cypress S25FL164K0XMFI003 is a 64 Mbit non-volatile NOR Flash memory from the FL1-K series, organized as 8M x 8 bits. It communicates over a SPI interface with Quad I/O support, allowing four data lines for read operations at a clock frequency up to 108 MHz — a practical upgrade from standard single-bit SPI for faster code shadowing or execute-in-place (XIP) in embedded systems. Page program and sector erase are handled with a write cycle time of 3 ms per word or page.
New designs should avoid this part and evaluate current-production NOR Flash alternatives in the 64 Mbit density class with Quad SPI and a 16-SOIC footprint.
Package and mounting — 16-SOIC wide body
Housed in a 16-SOIC package with a 7.50 mm body width (0.295" wide), surface-mount soldering is straightforward with standard reflow profiles. No exposed thermal pad — power dissipation is through the package leads and PCB copper.