SCK

SCK is an acronym with multiple meanings across different fields. The most common reference in electronics and computing is the Serial Clock, the clock line used by the Serial Peripheral Interface (SPI) bus. In SPI, SCK is the signal generated by the master device to synchronize data transfers on the MOSI and MISO lines. The exact waveform is defined by clock polarity (CPOL) and clock phase (CPHA), which determine when data is sampled relative to clock edges.

Beyond SPI, SCK is sometimes used as a shorthand label for a system clock or clock signal in digital circuits and hardware schematics. In such diagrams, SCK marks the timing reference that coordinates the operation of multiple components.

Other, less common uses of the acronym SCK appear in various domains as an abbreviation for organization names, project codes, or location identifiers. Because acronyms can vary by country and industry, the intended meaning of SCK should be inferred from surrounding text or documentation.

In technical literature and product datasheets, seeing SCK typically signals a timing-related role, most often tied to a clock signal used to synchronize data transfers or processor operations. When encountering SCK in a document, checking definitions for SPI parameters (such as CPOL and CPHA) or the context of digital timing will clarify its specific meaning.