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about seriel memory 24c04.

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Dear all,
I made project alarm clock of multiple schedules.I used 24c04 to store alarm schedules.3 to 4 months alarm rings accurately.but now some schedule have changed automatically.as it has a keypad lock.how to solve this problom.here i am using 8051 & rtc ds1307.please reply.
 

You say your program is partly working and partly not working. Not clear if the problem is related to 24C04 handling. What should we say about it without any code details?
 

Hi,

What should we say about it without any code details?
Click to expand...

... and without any error details.

We don´t know if the EEPROM data is altered, or if the RTC alarm data is altered... and if so, HOW is it altered?

Maybe even the RTC clock time is wrong...

Klaus
 

Does the 8051 handle I2C communications?
Because both the specified EEPROM and the RTC are I2C based.

But I agree, this post makes no sense.
 

Does the 8051 handle I2C communications?
Click to expand...
Standard 8051 doesn't. But it's easy to implement software I2C, everyone does with 8051.
 

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