which MCLR arrangement is good and recomended?

[sajeev]

MCLR+1k,
MCLR+4K7,
MCLR+10K,
MCLR+33K ??

 

[blueroomelectronics]

MCLR 22K is recommended by the PICkit 2. A diode is nice too.

 

[Prabakaran]

The MCLR depends upon Micontroller ur using . SO check the MCLR current input required for that controller.

 

[kender]

A diode is nice too.

Which diode are you talking about?
A diode between MCLR# and Vcc will make high-voltage in-circuit programming impossible.

 

[sajeev]

For PIC16 series, which combination will give protection against unwanted resets...?

 

[blueroomelectronics]

The diode between VDD is typical as it keeps your 13V VPP from being pulled to VDD.
Note the 100nf cap is not such a good idea though and that 2K is lower than I'd use. 10K thru 22K are usually fine.

 

[sajeev]

The diode between VDD is typical as it keeps your 13V VPP from being pulled to VDD.
Note the 100nf cap is not such a good idea though and that 2K is lower than I'd use. 10K thru 22K are usually fine.

Hi,
But most of the ciruit use 100nf, and the diode ,I think it is needed only for programming purpose, not for a finished board.

 

[blueroomelectronics]

You don't need anything for just programming the PIC. Hook it up directly to the programmer.