Hi all
I want to know a minimum value of internal Pull-up/Pull-down resistance for GPIO.
I thought I can find from "GPIO DC Parameters" tabel in IMX6SDLAEC.pdf, but I can't figure out.
For example, what does mean about following table ?
ko-hey
解決済! 解決策の投稿を見る。
1. Yes, you are right, the minimum pull-up resistor value is 22kOhm.
2. Vin=0 and Vin=OVDD represent the logic Low and logic High signal levels on the input.
Best Regards,
Artur
The value and direction of a pull-up/pull-down resistor for each pad can be selected in the IOMUX Controller module in the corresponding IOMUXC_SW_PAD_CTL_PAD_xxx register. Typically, for each pad a 100kOhm pull-up or 100kOhm pull-down or 47kOhm pull-up or 22kOhm pull-up can be slected. For more information, please refer to the "IOMUX Controller" chapter of the Reference Manual document.
Have a great day,
Artur
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Hi Artur
Thank you for your reply.
I know I can select the pull-up/pull-down resistor value by IOMUXC_SW_PAD_CTL_PAD_xxx.
Also I know the each values.
I can select 100kOhm, 47kOhm and 22kOhm.
In other words, the minimum value resistance is 22KOhm.
Is it correct ?
And I have one more question about that table.
There are two test conditions that are Vin=0V and Vin=OVDD.
I can't understand an intention of that.
Why are there two test conditions ?
Ko-hey
1. Yes, you are right, the minimum pull-up resistor value is 22kOhm.
2. Vin=0 and Vin=OVDD represent the logic Low and logic High signal levels on the input.
Best Regards,
Artur
Hi Artur
I understood your explanation.
Thanks a lot !!
ko-hey