The Philips Semiconductors 83C751/87C751 offers the advantages of the 80C51 architecture in a small package and at a low cost. It combines the benefits of a high performance microcontroller with on-board hardware supporting the Inter Integrated Circuit (I2C) bus interface. The Inter IC (I2C) bus developed by Philips allows integrated circuits to communicate directly with each other via a simple bidirectional 2-wire bus. The comprehensive family of CMOS and bipolar ICs incorporating the on-chip I2C interface offers many advantages to designers of digital control for industrial, consumer and telecommunications equipment.