[Urgent]Max value of drain-source voltage and sink current

[ko-hey]

Hi all

Please tell me the max value of drain-source voltage and sink current.

My customer built their custom board with i.MX6Q and i.MX6DL and they need the spec because they have to make some document for their end customer.

In the situation, they tried to find the value of them in the datasheet such as IMX6DQIEC.

Specially, they checked "4.6.2 General Purpose I/O (GPIO) DC Parameters".

However, they can't find those values.

So could you tell me the following value ?

Q1-1

What is the max value of drain-source voltage in i.MX6Q ?

Q1-2

What is the max value of sink current in i.MX6Q ?

Q2-1

What is the max value of drain-source voltage in i.MX6DL ?

Q2-2

What is the max value of sink current in i.MX6DL ?

Ko-hey

[Yuri]

Hello,

  "The drive current is affected by the configuration of the buffer. For those buffers, you can
use to DSE field in the controlling IOMUX registers to set the drive strength. There are also
a slew rate controls in those registers which may also have an effect."

  Please refer to the following app note for more details.

“Influence of Pin Setting on System Function and Performance”

http://www.nxp.com/assets/documents/data/en/application-notes/AN5078.pdf 

   The best way to estimate currents is to use the IBIS model for the IO(s) you care about.

Please refer to i.MX6 Hardware Development Guide, Chapter 7 (Understanding the IBIS Model)

how to use parameters, provided in the model.

< http://cache.nxp.com/assets/documents/data/en/user-guides/IMX6DQ6SDLHDG.pdf  >

 IBIS file shows tables with the buffer drive current across a range of pad voltages. You can look through the
list to find the current at the voltage of interest.

"Note that the IBIS model covers a wider range than the conditions allowed in the datasheet so not everything

in the IBIS model is an allowed use case. Also, these currents in a real case would be transient lasting only

nanoseconds or less. This does not imply you could run the buffer at that current for an extended period of time.

That would cause overheating on the part and create reliability problems."

Regards,

Yuri.

[ko-hey]

Hello Yuri

How about the max value of drain-source voltage ?

Can I find it from IBIS mode, too ?

If yes, please let me know how to find it.

I can't understand how to get drain-source voltage value from your explanation.

Ko-hey

[Yuri]

  As for voltages, please refer to table “General Purpose I/O (GPIO) DC Parameters” of the Datasheets.

~Yuri.

[ko-hey]

Which parameter is it ?

Could you specify which I need ?

Here is the example which is from IMX6DQIEC.

Ko-hey

[Yuri · Accepted solution]

OVDD is maximum.

Absolute Maximum Ratings (not operational): from -0.5   till OVDD+0.3 

Regards,

Yuri.

[ko-hey]

According to the Table 4 of IMX6DQIEC, the max of GPIO supply voltage is 3.6V.

So I think the max of OVDD is 3.6V.

Am I wrong ?

Ko-hey

[Yuri]

Hello,

 below we can find  input / output max voltage as OVDD + 0.3 

Also two comments may be provided :

1.

  "These are stress ratings only. Functional operation of the device at these or any other conditions beyond those
indicated in the Operating Ranges or Parameters tables is not implied."

2. 

  GPIO OVDD max = 3.6 V

Regards,

Yuri.

[ko-hey]

Hello Yuri

I understand the max is 3.6V.

Thank you.

Ko-hey