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The I/O drive characteristics in the Attiny24 Datasheet

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  The I/O drive characteristics in the Attiny24 Datasheet Johann Klammer <klammerj@NOSPAM.a1.net> - 2022-08-15 10:00 +0200
    Re: The I/O drive characteristics in the Attiny24 Datasheet Jim Jackson <jj@franjam.org.uk> - 2022-08-15 21:02 +0000

#31176 — The I/O drive characteristics in the Attiny24 Datasheet

Good Morning,

I was trying to guess the R_on from the curves in the datasheet
and got following results:

sinking Ron:
3V 1.4Ohm(maybe wrong)
5V 30Ohm

sourcing Ron:
3V 47Ohm
5V 33Ohm

I belive the 3V curve is wrong. It has the 
decimal point of the y axis in the wrong place. 

The chart in question is:
Figure 23-19. I/O Pin Output Voltage versus Sink Current (V CC = 3V)
on page 171 of Atmel-7701_Automotive-Microcontrollers-ATtiny24-44-84_Datasheet.pdf

Could someone please confirm or deny that?

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#31177

On 2022-08-15, Johann Klammer <klammerj@NOSPAM.a1.net> wrote:
> Good Morning,
>
> I was trying to guess the R_on from the curves in the datasheet
> and got following results:
>
> sinking Ron:
> 3V 1.4Ohm(maybe wrong)
> 5V 30Ohm
>
> sourcing Ron:
> 3V 47Ohm
> 5V 33Ohm
>
> I belive the 3V curve is wrong. It has the 
> decimal point of the y axis in the wrong place. 
>
> The chart in question is:
> Figure 23-19. I/O Pin Output Voltage versus Sink Current (V CC = 3V)
> on page 171 of Atmel-7701_Automotive-Microcontrollers-ATtiny24-44-84_Datasheet.pdf
>
> Could someone please confirm or deny that?

Have you asked on the avrfreaks forum?

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