Forums / Project Help / AT89C4051 as RTC need help - Rickey's World of Microcontrollers & Microprocessors

Discussion in "Project Help" started by thunder Feb 3, 2008.

thunder

[ Fresher ]

Sun Feb 03 2008, 01:53 pm

i used AT89C52 instead of AT89C4051 and did all the right connections as the datasheets say
but no thing appear on the LCD

i used the Hex in the web without any changes and this is my connections :
all what i did is here in this file plz tell me what i should do

http://rapidshare.com/files/88774207/clock.rar.html

thunder

[ Fresher ]

Sun Feb 03 2008, 10:13 pm

why no one want to help me i should hand this project tomorrow

plz some one help me in any way

Ngel

[ Fresher ]

Mon Feb 04 2008, 02:49 am

please copy and past the code, cant get files from RS

ajay_bhargav

Site Owner

Mon Feb 04 2008, 10:22 am

did you make any changes in the circuit? if not please check you connections carefully. they must be same as provided in the circuit. you can also make use of PCB provided in the download section.

THE_ONE

[ Fresher ]

Mon Feb 04 2008, 06:15 pm

please upload file properly...

thank you

shyam

[ Enthusiast ]

Mon Feb 04 2008, 07:53 pm

what crystall did u use???

everything is working. As i said please make use of PCB if needed.
can you tell me what you see on LCD? do you see something atleast?
I am sure there must be something wrong in your circuit.

you said that you are using 89C52 so are you sure you are using same ports for LCD? and crystal too?

thunder

[ Fresher ]

Mon Feb 04 2008, 11:06 pm

did you make any changes in the circuit? if not please check you connections carefully. they must be same as provided in the circuit. you can also make use of PCB provided in the download section.
Ajay

1- i didn't made any changes in the circuit except i used AT89C52 instead of AT89C4051
2- i checked my connection carefully and made 2 projects not only one and both r give me no display on the LCD.
3- they are same as provided in the circuit .
4- what u mean with ( you can also make use of PCB provided in the download section. )?

thunder

[ Fresher ]

Mon Feb 04 2008, 11:07 pm

what crystall did u use???
shyam

i used 11.0592MHz

thunder

[ Fresher ]

Mon Feb 04 2008, 11:14 pm

#10

everything is working. As i said please make use of PCB if needed.
can you tell me what you see on LCD? do you see something atleast?
I am sure there must be something wrong in your circuit.

you said that you are using 89C52 so are you sure you are using same ports for LCD? and crystal too?
Ajay

1- what PCB u mean and give me link to it plz
2- i see no think in the LCD just it work and no thing els ( that mean i see only green light and some times i see strange symbols )
3- u can see my circuit connections and tell me what wrong in it

Attachment