A system including: a master device configured to generate a first signal having a periodic pulse, wherein the first signal includes data; and a slave device including a pin, a delay circuit, a buffer, and a processing circuit, wherein the slave device receives the first signal at the pin, delays the first signal with the delay circuit to generate a second signal having a first delay, delays the first signal with the buffer to generate a third signal having a second delay, and reads the data from the second signal using the third signal at the processing circuit.