CY14B512PA Datasheet 512-Kbit (64 K x 8) SPI nvSRAM

Manufacturer: Cypress (now Infineon)

Datasheet Details

CY14C512PA CY14B512PA CY14E512PA 512-Kbit (64 K × 8) SPI nvSRAM with Real Time Clock 512-Kbit (64 K × 8) SPI nvSRAM with Real Time.

512-Kbit nonvolatile static random access memory (nvSRAM).
Internally organized as 64 K × 8.
STORE to QuantumTrap nonvolatile elements initiated automatically on power-down (AutoStore) or by using SPI instruction (Software STORE) or HSB pin (Hardware STORE).
RECALL to SRAM initiated on power-up (Power-Up RECALL) or by SPI instruction (Software RECALL).
Automatic STORE on power-down with a small capacitor.
High reliability.
Infinite read, write, and RECALL cycles.