A problem with reset in microcontroller 89C51

[K2DGR8]

Dear Friends,
I am not getting Vcc at the reset pin..(Pin. No. 9)

I changed the crystal.. I also checked for any short circuits.. But, nothing is short...
What else can I do?
Shall I replace the reset capacitor?

Please help me with the solution..
Thanking you in advance..

In addition to above, I have also checked microcontroller, which is working fine on another circuit

 

[internetuser2k12]

Post your circuit.

See this circuit http://www.engineersgarage.com/node/4812?i=380

 

[sequel]

in addition to the capacitor there should also be a resistor from the pin 9 to ground. say a 10K resistor....while you place a capacitor from the Vdd to the reset pin also.

the positive terminal of the capacitor should be connected to Vdd while the negative terminal should be connected to the reset pin
hope this helps...
sequel

 

[Briez]

Dear Friend..
Just make simple connection like given circuit....
=> In this connection Initially 5V goes to GND.. But when you press switch 5V appears of RESET pin of 89s52..

 

[jjeevan007]

can u post the circuit of your microcontroller

 

[bigdogguru]

A circuit like the following should do the job.




BigDog