SanDisk Firmware Engineer interview questions

short phone interview, non technical, then three technical interviews and one hr interview. first technical interview was a written test , after that we discussed the test and my solution. and then an the interviewer asked questions and we designed together an operating system. the second interview was supposed to be technical but was mainly personal with one technical question about registers and interrupts and handling interrupts.

it consisted of written test followed by the interviews. written test had questions on aptitude and technical which included most of the questions from digital (memories also) and analog. and RLC circuits. aptitude level was high whereas technical part was relative to the one in GATE examination. question on flash memories and comparators with different duty cycles were also asked.