CY14V101Q3 - 1 Mbit (128 K x 8) Serial SPI nvSRAM

Cypress (now Infineon)

Datasheet Details

CY14V101Q3 1 Mbit (128 K × 8) Serial SPI nvSRAM.

1-Mbit nonvolatile static random access memory (nvSRAM).
Internally organized as 128 K × 8.
STORE to QuantumTrap nonvolatile elements initiated automatically on power-down (AutoStore) or by user using HSB pin (Hardware STORE) or SPI instruction (Software 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.