Discussion in "Project Help" started by    venkat    Jun 22, 2007.
Fri Jun 22 2007, 02:28 AM
#1
hai friends,
please send me the schematic and c code to inteface the 12c887 rtc with at89c51ed2 mcu, waiting in anticipation
Tags interfacing 12C887 RTCinterfacing 12C887 RTC with 8051RTC interfacing
Fri Jun 22 2007, 04:10 AM
#2
I think one thread is already open for this discussion. Please do not make duplicate posts..
and make a schematic yourself i have also given you the pin configuration, if there is any error in the schematic i will help you correcting it.
and as it is memory mapped so you can simply read and write as you write in a memory location. first you finish your schematic then i will help you.

Note: Please do not create duplicate posts. If you have already opened a discussion with similar topic, its better to continue in the same thread Try not to mess up the forum.
Thanks!
Rickey's World
Fri Jun 22 2007, 04:57 AM
#3
Do you have assembly code for that?
Fri Jun 22 2007, 10:35 AM
#4
i said.. write the code if you get error i will help you removing it why you all want ready made things
Mon Jun 25 2007, 04:25 AM
#5
sir, Thank you for your replies,
I have already tried the circuit for dispalying the time on hyperterminal. I am getting the time which is not updating, for the first time i run the project i am getting whatever the time i have set without updating. if i switch off and on the controller i get another time which is still not updating. Even after i remove the rtc (i.e., po) iam still getting the un-updated time, in this case there is no connection between the rtc registers and the microcontroller. what could be wrong?
Mon Jun 25 2007, 05:10 AM
#6
no.. it could be cause.. you did not activate the oscillator. so clock is kind of halted.
see page 11 for more information on turning the oscillator on. :-)
Sat Jul 14 2007, 05:09 AM
#7
please refer "The 8051 microcontroller and Embedded System" By Mazidi." it has a very good tutorial for interface with 12c887 RTC
i have make a project using this with asm and working fine

note: before using the RTC u must enable the internal osc by proper configuration
Sat Jul 14 2007, 05:44 AM
#8
I told him to read page 11 and after that i am sure he will get the output.. coz he already made everything just for got to enable oscillator
Tue Jul 17 2007, 06:42 AM
#9
sir, I have enabled the oscillator, and used the attached code to read the initialized data and the updated clock. I am not getting the updated time. plz help me to debug.
Tue Jul 17 2007, 08:49 AM
#10
then post your work so that we can help u to find out the problem

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Wed Mar 25 2020, 09:39 AM
Tajammul
Sir kindly send the code file i2c for 8051
ExperimenterUK
Fri Mar 13 2020, 06:36 PM
@ Rohitnani,ABEBE..which project ?
Fri Mar 13 2020, 08:55 AM
ABEBE
how can get hadwere of this project
Rohitnani
Sat Mar 07 2020, 12:11 PM
Sir, Could you please send me the zip file input password....
Wed Feb 26 2020, 11:58 AM
Peter Parker
Is it possible to send multiple messages using only 1 GSM module?
Sat Feb 01 2020, 05:12 AM
Pearl Olin
Hello,
Wed Jan 22 2020, 01:16 PM
MINU CHAUDHARY
I m getting errors while simulation process during interfacing socket output and lcd... Can i get the report of ur project which is same as us.
Tue Jan 14 2020, 02:08 AM
shubham kharade
when i am trying to simulate the program in Proteus 8 professional, I am getting some errors as cannot find module file dhtxx.md can u help me
Tue Dec 17 2019, 08:44 AM
Devangi
hello..i am programming industrial timer using 8051 with 24lc64 eeprom. i have query in storing the 3 diff value in eeprom with enter button. can anyone share c code ?
Tue Dec 17 2019, 05:30 AM
Andrius
Hello. Can anyone share the code in Bascon and scheme in Proteus?

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