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sajeev
Joined: 29 Apr 2005
Posts: 103
Helped: 2
Location: Kerala-India
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 18 Oct 2007 20:15 which MCLR arrangement is good and recomended? |
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MCLR+1k,
MCLR+4K7,
MCLR+10K,
MCLR+33K ??
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1681
Helped: 99
Location: Toronto, Canada
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18 Oct 2007 20:24 which MCLR arrangement is good and recomended? |
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| MCLR 22K is recommended by the PICkit 2. A diode is nice too.
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Prabakaran
Joined: 22 Jan 2007
Posts: 160
Helped: 5
Location: Chennai(India)
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19 Oct 2007 6:03 which MCLR arrangement is good and recomended? |
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| The MCLR depends upon Micontroller ur using . SO check the MCLR current input required for that controller.
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kender
Joined: 19 Jun 2005
Posts: 1231
Helped: 88
Location: Stanford, SF Bay Peninsula, California, Earth, Solar System, Milky Way
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19 Oct 2007 6:07 Re: which MCLR arrangement is good and recomended? |
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| blueroomelectronics wrote: |
| 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.
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sajeev
Joined: 29 Apr 2005
Posts: 103
Helped: 2
Location: Kerala-India
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19 Oct 2007 6:12 Re: which MCLR arrangement is good and recomended? |
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| For PIC16 series, which combination will give protection against unwanted resets...?
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19 Oct 2007 6:12 Ads |
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1681
Helped: 99
Location: Toronto, Canada
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19 Oct 2007 6:35 Re: which MCLR arrangement is good and recomended? |
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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.
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sajeev
Joined: 29 Apr 2005
Posts: 103
Helped: 2
Location: Kerala-India
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19 Oct 2007 6:49 Re: which MCLR arrangement is good and recomended? |
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| blueroomelectronics wrote: |
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.
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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.
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1681
Helped: 99
Location: Toronto, Canada
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19 Oct 2007 16:18 which MCLR arrangement is good and recomended? |
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| You don't need anything for just programming the PIC. Hook it up directly to the programmer.
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