256-Kbit (32 K × 8) Serial (I C) nvSRAM with Real.
Cypress Semiconductor
CY14B256I - 256-Kbit (32 K x 8) Serial (I2C) nvSRAM
256-Kbit (32 K × 8) Serial (I C) nvSRAM with Real Time Clock 256-Kbit (32 K × 8) Serial (I2C) nvSRAM with Real Time Clock CY14C256I CY14B256I, CY14E2.