http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2008-12-02T00:30:55-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t9538.html 2008-12-02T00:30:55-08:00 Hi, I am using 89C51, can I write to a Flash location from a program running on 89C51 i.e. I want to store some data on Flash so that it wont go when I turn off the power supply. http://www.8051projects.net/forum-t9538.html 2008-12-02T00:30:55-08:00 shyam RD2 and c669 also support IAP. http://www.8051projects.net/forum-t9538.html 2008-12-02T00:30:55-08:00 Arun Kumar V Hi, what you need is an 8051 with On-chip EEPROM like AT89C8252 which has 2KB on-chip EEPROM where you can store your Datai have never seen a 8051 Self program it self and write to the code memoryArun