Thank you; this means data always transfers or is received at the edge of the clock signal.

In the SPI protocol, data is transferred on the rising edge of the clock and received on the falling edge of the clock pulse.

In the I2C protocol, when pull-up resistors are used, the sender transfers data on the falling edge of the clock, and the receiver receives data on the rising edge of the clock pulse.

 

Thank you; this means data always transfers or is received at the edge of the clock signal.

In the SPI protocol, data is transferred on the rising edge of the clock and received on the falling edge of the clock pulse.

In the I2C protocol, when pull-up resistors are used, the sender transfers data on the falling edge of the clock, and the receiver receives data on the rising edge of the clock pulse.

This is not correct for SPI. You can select which edge is used for clocking data. Review the four options of CPOL and CPHA.

 

This is not correct for SPI. You can select which edge is used for clocking data. Review the four options of CPOL and CPHA.

I believe it's accurate in SPI Mode 3 (CPOL=1, CPHA=1),