CouriousOne, the question:" I will need to update it at least 30 times per second. Reading internal eeprom so much times will cause it to fail quite fast, I guess? " NO reading the eeprom from the particular processor will not wear it out BUT, Writing to the same locations of PROGRAM MEMORY more than 1000 or so times will. Also writing to internal EEPROM MEMORY more than 100,000 times will.