RT12867 23K256-I/SN Microchip Sram Serial 256K 2.7V Soic8
The 23K256-I/SN is a 256K SPI bus low-power Serial SRAM Device. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Communication to the device can be paused via the hold pin (hold).