An integrated circuit digital device, acting as a master, communicates with at least one peripheral device, acting as a slave, using an enhanced single-node protocol for data, address and control operation. The peripheral device may be selected from any number of different functions. The peripheral device may be packaged in a low pin count integrated circuit package. At a minimum, the peripheral device integrated circuit package may have a ground terminal, VSS; a power terminal, VDD or VCC; and a bidirectional serial clock, and data and control input-output (SCIO) terminal. Acknowledgment sequences from both the master and slave devices ensure robust communications therebetween.