The CY15B104Q-SXI is a 4 Mbit FRAM organized as 512K x 8 bits, accessed through an SPI bus at 40 MHz.
Industrial temperature range and package
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.
