i'll connect the MCLR pin of the pic to the ground sir? what will happen sir? it wont damage my pic? thank you!!

If you touch it momentarily to ground it resets the PIC - that's it's purpose so it won't do any harm.

 

MCRL needs to be held high to not reset, why not just turn off MCRL in the fuses...

 

what do you mean sir? can i just disconnect the MCLR? It wont affect my EEPROM function? thank you!

 

In the fuses, where you find things like LVP_ON, OSC_EXT, BOD_OFF, etc. just write MCRL_OFF

 

ahhh..ok.. u mean the CONFIG sir?..

this one:
__CONFIG _CP_OFF & _WDT_OFF & _PWRTE_ON & _XT_OSC

it will be like this then:
__CONFIG _CP_OFF & _WDT_OFF & _PWRTE_ON & _MCRL_OFF & _XT_OSC

 

Exactly! Give that a shot

 

i will sir! thank you so much!!

 

The older 16F877A doesn't support MCLR as an input pin. The 887 does.

 

hmmm..i thought it will do the trick.. do you have any idea sir if how can i solve this starting up problem thing?

 

Looks fine. Is MCLR pulled up to Vdd (preferably with a resistor)?

Usually, you pull MCLR to Vdd/Vcc using a 10k resistor - particularly if you are using an ICSP programmer.

Are you certain that the crystal itself is good?

They are rather fragile. If they have been dropped on a hard surface from more than a foot or so height, the crystal can break loose from it's mountings. You can break a crystal by using the wrong type of diagonal cutters when trimming excess lead lengths, or using the cutters improperly. Proper cutters have their blades designed so that any sudden shock is on the side away from the component.

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hmmm..i thought it will do the trick.. do you have any idea sir if how can i solve this starting up problem thing?

Post your code & schematic.

 

Here's the code and schematic sir!

MCLR is pulled up by a 10k resistor sir..and what are the symptoms if the xtal is broken/damage sir?

 

If the XTAL is broken, you will not get a clock cycle. No clock cycle, then the PIC wont do a thing. It waits for clock hits to read the instructions in time.

No XTAL = No program running

 

thank you for the info sir!