About I2C spec in i.MX6DQ

[keitanagashima]

Dear All,

Hello. I have questions about I2C spec in i.MX6DQ.

Please refer to attached file & answer to me.

Best Regards,

Keita

[art · Accepted solution]

1. The i.MX6DQ Data Sheet document specifies the maximum capacitive load of each I2C line as 400pF.

2. As it can be easily calculated, with the bus voltage of 3.3V and pull-up resistors value of 4.7kOhm the bus current is 3.3V/4.7kOhm = approx. 0.7mA.

Have a great day,
Artur

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[keitanagashima]

Hi Artur,

Thank you for your reply.

> 1. The i.MX6DQ Data Sheet document specifies the maximum capacitive load of each I2C line as 400pF.

I'd like to know the terminal capacitive load(Cin) (not bus line Capacitive load)

Do you have this spec?

> 2. As it can be easily calculated, with the bus voltage of 3.3V and pull-up resistors

> value of 4.7kOhm the bus current is 3.3V/4.7kOhm = approx. 0.7mA.

I'd like to know the maximum rating current  (not typical current).

Please confirm again.

Best Regards,

Keita

[art]

1. Do not understand what do you mean as terminal capacitive load. Please explain in more details. Do you mean the capacitance of the pad itself?

2. It is the same as maximum rated current for a regular I/O pad. The maximum rated I/O current for long term operation is 10mA. Absolute maximum rated current (not for long term operation) is 100mA.

Best Regards,

Artur

[keitanagashima]

Dear Artur,

Thank you for your reply.

1. I talked my customer that NXP doesn't have the spec of terminal capacitive load (Cin).

So, my customer  will confirm the actual AC waveform.

>Do you mean the capacitance of the pad itself?

Sorry. I have the introduction URL only japanese language.

Best Regards,

Keita