Hello Everybody,
I have a EPROM programmer at my college. I wanted to burn code in my DS89C450 uC. the programmer had only DS89C420. i checked the datasheet it says that the 2 IC's are pin compatible and applications using DS89C420 can be replaced with DS89C450. When i tried burning my code the programmer says " MANUFACTURER'S CODE NOT MATCHED". what does it mean and what should i do?