The 23LC512-I/ST is a 512Kbit (64K x 8-bit) Serial SRAM device accessed via a Serial Peripheral Interface (SPI) compatible bus. It operates over a wide VCC range of 2.5V to 5.5V and supports a maximum clock frequency of 20 MHz for the industrial temperature range. This low-power CMOS device features SPI, SDI (Dual), and SQI (Quad) modes for faster data rates, along with unlimited read and write cycles. Operating from -40°C to +85°C, it is suitable for various applications requiring fast, temporary data storage, such as buffer memory, data logging, and embedded systems.