The S25FL129P0XBHI300: It uses a SPI interface with Quad I/O support, allowing four-bit-wide data transfers at a 104 MHz clock.
Cypress has discontinued production, and no last-time-buy window is indicated in the record. Availability is limited to existing inventory held by distributors and traders; current pricing and stock levels are confirmed only at quote time.
The S25FL129P0XBHI300 comes in a 24-ball TBGA package (6 mm x 8 mm body), surface-mount only.
Quad SPI support — confirmed
Yes, this device supports Quad SPI (Quad I/O). The memory interface is explicitly listed as SPI - Quad I/O, which means it can read four bits per clock cycle on the same four data lines. At 104 MHz, that delivers a theoretical peak read bandwidth of 416 Mbps — useful for fast boot from Flash or high-throughput firmware updates without needing a parallel bus.