512-Kbit (64 K × 8) Serial (I C) nvSRAM with Real.
Cypress Semiconductor
CY14B512I - 512-Kbit (64 K x 8) Serial (I2C) nvSRAM
512-Kbit (64 K × 8) Serial (I C) nvSRAM with Real Time Clock 512-Kbit (64 K × 8) Serial (I2C) nvSRAM with Real Time Clock CY14C512I CY14B512I, CY14E5.