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Problem with clock project as LCD displays only 2 times instead of 7

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joshijay85

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hi

I have also made a clcok project with mu 89c51 and PCF 8583, but the problem is that lcd display only 2 times 1's instead of 7 times....for rtc test programming. I dont know why it heppenes, i have used 32khz cristal . can any one helps to give me exact programming?

my project is microcontroller based annunciator.
so interfacing lcd(20x2)+rtc(pcf8583)+shift reg for mode zero(using programme from kennath j.ayala page-295)...
use port 1.0-sda and port 1.1 -scl for rtc inrefacing 89c51....use port 0 for acknowldege ment for mode zero-p3.2 to 3.0 for shift register to 89c51

regards
 

hii help me..

Ahh well I couldn't tell want you wanted from your non descriptive "hii help me" subject line.
You'll probably get more help if you enter a more descriptive subject line.
 

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