Design an efficient programmable I2C slave May 14, 2007 Embedded Staff The latest MCUs make it feasible to include programmable I2 C slaves in low-cost systems. Most low-speed serial devices communicate with each other using the I2 C bus. Although there's a wide variety of I2 C slave ICs, programmable I2 C slaves are rare. One such programmable slave is the microcontroller (MCU). Forcing a microco