It sounds like you're looking for the classic textbook by Dr. K.V.K.K. Prasad .
: Covers the fundamental building blocks of embedded systems, including processor types, memory management, and communication interfaces Google Books embedded real time systems kvkk prasad pdf exclusive
Finally, deep on the fourth page of results, buried in a forgotten forum thread from 2014, he found a link. It wasn't a flashy download button. It was a plain text link posted by a user named 'BitShifter'. The comment below it read: “This saved my thesis. Exclusive copy, OCR’d perfectly.” " Embedded / Real-Time Systems: Concepts, Design and