The DS1801 SPI protocol is described in figure (a) on page 4 of the datasheet (shown above). Note that the SPI enable signal, called RST on the DS1801, is actually opposite standard notation.

Microchip's HID-class MCP2210 USB to SPI protocol converter is the simplest, smallest-footprint and most cost-effective option for adding USB-Certified connectivity to SPI-based systems.

SPI interface is emerging as a popular choice in automotive applications ranging from sensors, display console, navigation systems, booting through SPI Flash and many more. SPI low pin count and ...

Sreenath Panganamala, Nishith Sharma, Sriram Balasubramanian (Synopsys) Abstract: The paper discusses about Execute In Place (XiP) feature in embedded systems implemented through the SPI protocol.

Addressing is built into the I 2 C protocol and doesn’t add to the code size. In SPI and UART systems, node addressing requires extra firmware overhead.