4 Mbit FRAM with 40 MHz SPI — what it means for the BOM
The CY15B104Q-SXI is a 4 Mbit FRAM organized as 512K x 8 bits, accessed through an SPI bus at 40 MHz. FRAM writes at bus speed with no write-cycle delay.
Industrial temperature range and package
Rated for -40°C to 85°C ambient, the part covers the majority of factory-floor and outdoor telecom enclosures. The 8-SOIC (5.30 mm width) footprint is a common SPI-NVRAM pinout, so board layout re-use across density upgrades is straightforward. ROHS3 compliant per the entry.