Currently I am working on the project using the DS89C450 Microcontroller from DALLAS. I am using the PK51 V7.0 to do my programming and download to the flash through MTK that provides by the DALLAS. In the program, I need to key in whatever information from the keypad and display on the LCD and then save it on the flash. My problem is how to save it in the internal flash so that when the power off and on again, the updated data still remains in the flash. Please advise. The operating system is XP SP2.

Thanks.

Blessed New Year
Andson