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PICList Thread
'Typical MLCR connection?'
1997\01\27@115445 by Kevin Russell

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I am using some of the new PICS with brown out protection and want to know
if I can just tie MCLR high?  I think I have seen some designs with a
resistor to prevent latch up?  I would be interested in hearing what people
typically do...

Kevin Russell
spam_OUTkevin.russellTakeThisOuTspamnull.net

1997\01\27@152028 by Craig Knotts

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    Typical practice where I work is to connect MCLR to Vdd, using the
    shortest path possible.

    Most of our designs use the 16C5x processors, without internal
    brownout circuits.  You might wish to add an external power supply
    brownout shutdown to ensure that the processor resets properly after a
    temporary power down condition.


______________________________ Reply Separator _________________________________
Subject: Typical MLCR connection?
Author:  .....kevin.russellKILLspamspam@spam@NULL.NET at internet
Date:    1/27/97 12:45 AM


I am using some of the new PICS with brown out protection and want to know
if I can just tie MCLR high?  I think I have seen some designs with a
resistor to prevent latch up?  I would be interested in hearing what people
typically do...

Kevin Russell
kevin.russellspamKILLspamnull.net

1997\01\27@164857 by myke predko

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Kevin,

I always use a Pull Up (4.7K - 10K) to allow resetting the PIC easily by
pulling _MCLR to Ground (and on the 18 pin devices, this can be done with a
screwdriver because Ground (Vss) is right beside _MCLR).

myke
>I am using some of the new PICS with brown out protection and want to know
>if I can just tie MCLR high?  I think I have seen some designs with a
>resistor to prevent latch up?  I would be interested in hearing what people
>typically do...
>
>Kevin Russell
>.....kevin.russellKILLspamspam.....null.net
>
>

"I don't do anything that anybody else in good physical condition and
unlimited funds couldn't do" - Bruce Wayne

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