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  • The I/O drive characteristics in the Attiny24 Datasheet

    From Johann Klammer@21:1/5 to All on Mon Aug 15 10:00:25 2022
    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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  • From Jim Jackson@21:1/5 to Johann Klammer on Mon Aug 15 21:02:27 2022
    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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