Thank You.
I stand corrected.
I'll go DL the latest rev datasheet.

Lyle


----- Original Message -----
From: "Tim Webb" <tim_webb@AGILENT.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, February 06, 2003 1:03 PM
Subject: Re: [PIC]: From DIP to PLCC


> Lyle,
>
> On page 4 of the Data Sheet DS41159C, the NC connections are on pins 1,
17, 28 & 40
>
> There must be different revisions?
>
>
http://www.microchip.com/download/lit/pline/picmicro/families/18fxx8/41159c.
pdf
>
> Tim
>
> -----Original Message-----
> From: Hazelwood Lyle [mailto:LHazelwood@MFGNC.COM]
> Sent: Thursday, February 06, 2003 12:22 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC]: From DIP to PLCC
>
>
> Not according to DS4119A from Microchip.
> For example,
> 18F458-I/P (PDIP) Shows Pin 1 as MCLR/VPP
> 18F458-I/L (PLCC) Shows Pin 1 as DBGMCLR/VPP and
>                                 Pin 2 as MCLR/VPP
> 18F458-I/L (PLCC) Shows Pin 17 as NC. This is the
>         only NC pin shown for this package in this datasheet
> 18F458-I/L (PLCC) Shows pin 28 as ICDDATA, there is no comparable
>         pin for the PDIP version.
> 18F458-I/L (PLCC) Shows pin 40 as ICDCLK, There is no comparable
>         pin for the PDIP version.
>
> They have apparently separated the ICD connections from the
> shared I/O pins, allowing it to be more transparent to the
> project being debugged. This is cool for those who use ICD.
> I just wondered how best to terminate them if not being used.
>
> Any suggestions would be welcomed.
>
> Lyle
>
>
> -----Original Message-----
> From: Tim Webb [mailto:tim_webb@AGILENT.COM]
> Sent: Thursday, February 06, 2003 2:09 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC]: From DIP to PLCC
>
>
> >Do you realize that you have (4) NC pins - usually those are the extra
> (4) pins
> >The ICDDATA, ICDCLK, DBMCLR/VPP pins should be terminated the same way
> you did in the dip form
>
>
>
> -----Original Message-----
> From: Hazelwood Lyle [mailto:LHazelwood@MFGNC.COM]
> Sent: Thursday, February 06, 2003 10:48 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [PIC]: From DIP to PLCC
>
>
> I am moving a project from  18F458 DIP to PLCC.
> The "extra" four pins are marked:
>
> NC
> ICDDATA
> ICDCLK
> DBMCLR/VPP
>
> I can handle the NC, but how (if at all)
> should I terminate the other three?
>
> I checked the datasheet, but only found the
> purpose for the pins, no info on suggested
> termination if they aren't being used.
>
> I am NOT planning any debugger connection,
> I just want to place them in a stable,
> inactive state.
>
> Any suggestions would be welcomed.
>
> Lyle Hazelwood
>
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