The Winbond W25Q64JVSSIQ is a 3.0‑3.6 V serial NOR Flash memory chip offering 64 M‑bit (8 M × 8) capacity with support for Single/Dual/Quad‑SPI up to 133 MHz. It features small 4 KB sectors, 32 KB and 64 KB block erase, and full-chip erase routines, with typical page‑program time of ~3 ms. Operating temperature ranges from −40 °C to +85 °C, with read current up to 25 mA in active mode.. Packaged in SOIC‑8, it’s moisture‑sensitive and RoHS‑compliant.