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'16C6X inputs'
1998\02\11@201611 by Calvin

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Does anyone know the input protection of the 16c6x series pics?
I know the c5x series have 2 clamping diodes on each input (but MCLR, this
only has one), but I have not been able to find any info for the midrange
PICs. I have checked the Data Sheets to no avail... :(

TIA

Gabriel Gonzalez
TGO Electronics

1998\02\11@210016 by JULIO CARBALLO

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part 0 558 bytes
                                       saludos julio

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De:             Calvin[SMTP:spam_OUTtgoTakeThisOuTspamCHIH1.TELMEX.NET.MX]
Enviado:        MiŽrcoles 11 de Febrero de 1998 8:16 AM
Para:           .....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU
Asunto:         16C6X inputs

Does anyone know the input protection of the 16c6x series pics?
I know the c5x series have 2 clamping diodes on each input (but MCLR, this
only has one), but I have not been able to find any info for the midrange
PICs. I have checked the Data Sheets to no avail... :(

TIA

Gabriel Gonzalez
TGO Electronics


1998\02\12@033757 by Mike Keitz

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On Wed, 11 Feb 1998 07:16:22 -0600 Calvin <tgospamKILLspamCHIH1.TELMEX.NET.MX>
writes:
>Does anyone know the input protection of the 16c6x series pics?
>I know the c5x series have 2 clamping diodes on each input (but MCLR,
>this
>only has one), but I have not been able to find any info for the
>midrange
>PICs.

The port hardware is almost the same.  On the 16C5X, the RTCC input pin
also lacks a diode to Vdd.  The major difference with the 14-bit PICs is
that PORTB has pull-up devices which can be enabled.

>I have checked the Data Sheets to no avail...

The notes in Figures 5-1, 5-2, and 5-3 of the 16C6x data sheet indicate
that all port pins except RA4 have diodes to Vdd and Vss (RA4 only has a
diode to Vss).  The RA4 pin is analogous to the RTCC pin on the 16C5x
PICs.

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