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 2009-01-07T18:59:58-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t10371.html 2009-01-07T18:59:58-08:00 hello, everybody! now I have a project about real time clock DS1302 and LCD. I want to write a c programming to display the time and date in the LCD using DS1302 real time clock.anyone can provide some code or sample c programming to run this project??thanks . http://www.8051projects.net/forum-t10371.html 2009-01-07T18:59:58-08:00 Ajay you have to start yourself. We will provide you all help you need for your project. Just download Datasheet from Dallas website and try to implement reading of internal registers of DS1302.for any help we are here.. http://www.8051projects.net/forum-t10371.html 2009-01-07T18:59:58-08:00 gongyoo hiths for your reply. actually I read the data sheet already.I still some confused about the subfunction about the DS1302 .my project is quite urgent . can you provide the whole project . I want to learn the sample program about just using 1602 LCD display DS1302. so can you provide the whole programming ??thanks for your help . http://www.8051projects.net/forum-t10371.html 2009-01-07T18:59:58-08:00 Ajay gongyoo, i wish i could provide the code direcly, but its not according to rules of forum. But I am here to help you out.DS1302 works on very simple 3-wire interface. the format of reading and writing from clock is given on page 6.first you send a byte in following formatBit 0 : Read/WriteBit 1- Bit5 : A0 - A5 : Address BitsBit 6: RC (ram or clock)Bit 7: always 1after you send this byte, your next byte will be either data you want to write or read. Please try it once, try writing something.