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  2. I²C - Wikipedia

    en.wikipedia.org/wiki/I²C

    Clock stretching is the only time in I 2 C where the target drives SCL. Many targets do not need to clock stretch and thus treat SCL as strictly an input with no circuitry to drive it. Some controllers, such as those found inside custom ASICs may not support clock stretching; often these devices will be labeled as a "two-wire interface" and not ...

  3. System Management Bus - Wikipedia

    en.wikipedia.org/wiki/System_Management_Bus

    It carries clock, data, and instructions and is based on Philips' I²C serial bus protocol. [1] Its clock frequency range is 10 kHz to 100 kHz. (PMBus extends this to 400 kHz.) Its voltage levels and timings are more strictly defined than those of I²C, but devices belonging to the two systems are often successfully mixed on the same bus.

  4. Synchronous Serial Interface - Wikipedia

    en.wikipedia.org/wiki/Synchronous_Serial_Interface

    Synchronous Serial Interface (SSI) is a widely used serial interface standard for industrial applications between a master (e.g. controller) and a slave (e.g. sensor). SSI is based on RS-422 [1] standards and has a high protocol efficiency in addition to its implementation over various hardware platforms, making it very popular among sensor manufacturers.

  5. Serial communication - Wikipedia

    en.wikipedia.org/wiki/Serial_communication

    Serial computer buses have become more common even at shorter distances, as improved signal integrity and transmission speeds in newer serial technologies have begun to outweigh the parallel bus's advantage of simplicity (no need for serializer and deserializer, or SerDes) and to outstrip its disadvantages (clock skew, interconnect density).

  6. Serial Peripheral Interface - Wikipedia

    en.wikipedia.org/wiki/Serial_Peripheral_Interface

    Sending data from sub to main may use the opposite clock edge as main to sub. Devices often require extra clock idle time before the first clock or after the last one, or between a command and its response. Some devices have two clocks, one to read data, and another to transmit it into the device. Many of the read clocks run from the chip ...

  7. Synchronous serial communication - Wikipedia

    en.wikipedia.org/wiki/Synchronous_serial...

    Synchronous serial communication describes a serial communication protocol in which "data is sent in a continuous stream at constant rate." [1]Synchronous communication requires that the clocks in the transmitting and receiving devices are synchronized – running at the same rate – so the receiver can sample the signal at the same time intervals used by the transmitter.

  8. I3C (bus) - Wikipedia

    en.wikipedia.org/wiki/I3C_(bus)

    Clock Stretching – devices are expected to be fast enough to operate at bus speed. The I3C controller is the sole clock source. I²C Extended (10-bit) Addresses. All devices on an I3C bus are addressed by a 7-bit address. Native I3C devices have a unique 48-bit address which is used only during dynamic address assignments.

  9. Parallax Propeller - Wikipedia

    en.wikipedia.org/wiki/Parallax_Propeller

    This code emulates an I²C interface in software, temporarily using two I/O pins for the needed serial clock and data signals to load user code from an external I 2 C EEPROM. Simultaneously, it emulates a serial port, using two other I/O pins that can be used to upload software directly to RAM (and optionally to the external EEPROM). If the ...

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