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External EEPROM 24LC512

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venkates2218

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With reference with datasheet and information on internet I designed this circuit.But some times the data not storing in the EEPROM.Is their any wrong with this circuit..? image 2.png
 

Where did you get the Vcc series resistor idea, what's the purpose? There should be at least a bypass capacitor.
 

FvM said:
Where did you get the Vcc series resistor idea, what's the purpose? There should be at least a bypass capacitor.
Click to expand...

I saw in tutorials.While providing power supply to the IC their should be an current limit resistor.Is this method is wrong..?
Bypass capacitor..?At which pin have to place bypass capacitor.
In Vcc pin or somewhere else..?
 

By "bypass capacitor" it is referred the decoupling capacitor ( usually ceramic, 100KpF ), placed between VCC and GND, close to IC terminals, in order to suppress high frequency noises from power rail. By the way, adding a resistor in series with the power supply pin is something never seen when dealing with logic devices, so you should have misleading with another circuit in other context.
 

No need to add series resistor with power supply and VCC pin microcontroller means also..?

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andre_teprom said:
By "bypass capacitor" it is referred the decoupling capacitor ( usually ceramic, 100KpF ), placed between VCC and GND, close to IC terminals, in order to suppress high frequency noises from power rail. By the way, adding a resistor in series with the power supply pin is something never seen when dealing with logic devices, so you should have misleading with another circuit in other context.
Click to expand...

decoupling_capacitor.png Is this is correct..?
 

Yes, as it should always be; at least Vcc connection is correct, but decoupling is usually done with ceramic capacitor, something like 100nF, much better,
 

Hi,

The only source of information that counts is the datasheet.
Read it.

Klaus
 

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