CY14MB064Q2A-SXQT is a 64-Kbit (8K × 8) SPI nvSRAM that combines SRAM with QuantumTrap nonvolatile storage for nonvolatile writes without software delays. Data STORE occurs automatically on power-down using a small VCAP capacitor and RECALL restores SRAM on power-up. It operates from 2.7 V to 3.6 V over –40°C to +105°C, supports 40 MHz SPI (modes 0 and 3), and provides write and block protection plus an 8-byte serial number.