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CC2642R: GPIO DC Characteristics

Takashi Hosokawa
Expert 1455 points
Part Number: CC2642R
Other Parts Discussed in Thread: CC2640R2F

Hi All,

Please tell me about the GPIO DC Characteristics of CC2642R.

Looking at P27 "Table 5-17 GPIO DC Characteristics" of the data sheet (swrs194c), the value of "GPIO VOH at 8mA load" is the same value "1.58V" at VDDS = 1.8V and 3.0V.

I think the value at 3.0V is too low, is it a mistake?

In the following datasheet (Japanese version: jajsek9a), "GPIO VOH at 8-mA load" at VDDS = 3.0 V is Typ 2.57 V.

Is this value correct?

Also, please tell me the value of GPIO VOH at 8-mA load at VDDS = 3.8 V and GPIO VOH at no load.

(Are there any plans to add it in the future?)

Best Regards,

Takashi

  • 0
    TI__Guru** 101460 points
    Hi Takashi,
    I took a look at the document you attached and it turns out that you are using an "old" document. The latest version of this document can be found at the following address: www.ti.com/.../cc2642r.pdf
    (this is the english version: unfortunately the japanese version of this document has not been updated yet).
    You will find (still in the "GPIODC Characteristics" table) the updated data you need.

    Wishing that this would help you,
    Best regards,
  • 0 in reply to Clément
    Expert 1455 points
    Hi Clément san,

    Thank you for your quick comment.
    However the datasheet on the your link was swrs194c too, and the GPIO VOH at 8mA load(VDDS = 3.0V) value was 1.58V.
    Is it still unreleased?

    Best regards,
    Takashi
  • 0
    Expert 1455 points

    Hi Clément san,

    I am sorry that I can not explain well.

    What I wanted to confirm is that

    - GPIO VOH at 8mA load (VDDS = 1.8V) is 1.58V

    - GPIO VOH at 8mA load (VDDS = 3.0V) is 1.58V

    both is same value.

    Furthermore, the red frame in the figure below is all the same.

    Is this not a mistake?

    By the way, in CC2640R2F, there were the following differences at VDDS = 1.8V and 3.0V.

    - GPIO VOH at 8mA load (VDDS = 1.8V) is 1.54V(Typ)

    - GPIO VOH at 8mA load (VDDS = 3.0V) is 2.68V(Typ)

    CC2640R2F also has built-in DC-DC, but both have different values.

    I can see that CC2640R2F and CC2642R are separate devices. However, will VDDS = 1.8 V and 3.0 V have exactly the same value as in the above figure?

    Best Regards,

    Takashi

  • 0 in reply to Takashi Hosokawa
    TI__Guru** 106705 points
    Hi Takashi,

    That is indeed a mistake in the datasheet and we are currently working to correct it.

    For now, you can assume the performance will be very similar to CC2640R2F.

    Regards,
    Fredrik
  • 0 in reply to Fredrik K
    Expert 1455 points

    Hi Fredrik san,

    Thank you for your comment.

    I understand that the description in the data sheet (swrs194c) is mistake.

    I want to check, just in case.

    Is contents of "GPIO VOH at 8-mA load" at VDDS = 3.0V is 3.05 Typ 2.57V listed in the Japanease datasheet (jajsek9a) of CC2642R which I first asked was correct?

    The contents of CC2640R2F's Datasheet also seem to be slightly different.

    Best Regards,

    Takashi

  • 0 in reply to Takashi Hosokawa
    TI__Guru** 106705 points
    Hi Takashi-san,

    Those numbers are pretty close to the actual values. The new values going into the datasheet for 3.0 V are:
    * 2.59
    * 0.42
    * 2.63
    * 0.40

    Regards,
    Fredrik
  • 0 in reply to Fredrik K
    Expert 1455 points
    Hi Fredrik san,
    Thank you for your comment.
    I'll answer the customer.

    Please tell me additional if possible.
    - GPIO VOH at 8-mA load at VDDS = 3.8
    - GPIO VOH at no load.

    Best Regards,
    Takashi
  • 0 in reply to Takashi Hosokawa
    TI__Guru** 106705 points

    Hi Takashi san,

    Corrected datasheets are now available on the web.

    Regards,
    Fredrik

  • 0 in reply to Fredrik K
    Expert 1455 points

    Hi Fredrik-san,

    Thank you for your information.

    I will introduce to the customer immediately.

    Best Regards,

    Takashi