I am using MCB 2300 board by keil.I am successful in reading 1 adc using ISR ,but it is creating problem when enable ISR for two ADC inputs.Is it possible to read 2 adc's in same isr. I am starting the conversion every time by setting 26:24 START to 001. In the description for AD0CR register 0- 7 bit user manual mentions dat In software-controlled mode, only one of these bits should be 1. Is is softawre controlled mode which i am using ?Do I need to set BURST bit to read two ADC's.