GPIO Electrical Characteristics on i.MX6 SOLO

[martindenion]

I would like to know more about the electrical characteristics of GPIO1_18 on the i.MX6 SOLO processor like maximum input current and maximum voltage.

[martindenion]

Okay thanks, but why are there 3 "Typ" voltages for these GPIOs? Can we put any of these 3 or they are GPIO with "programmable" voltage?

[IvanRuiz]

Hello,

You can put any you want to; the "typ" values mean that they are the typical value for the listed voltage rails within the range (from 1.65 to 3.6V) that you can select from.

BR,

Ivan.

[IvanRuiz]

Hello,

For the GPIO DC Parameters, please refer to table 4.6.2, and for the voltage rails for GPIO supply voltages, please refer to table 8 of the datasheet, which in this case, NVCC_SD1 corresponds to the GPIO1_IO18: https://www.nxp.com/docs/en/data-sheet/IMX6SDLIEC.pdf

Hope it helps!

BR,

Ivan.

[martindenion]

Thank you! I have two more questions regarding Table 4.6.2:

I don't understand why the IO current limit for these GPIOs is lower when Vin=0V than when Vin=OVDD.

Moreover, if I want to connect one of these GPIOs to a pullup resistor with for example a voltage of 1.8V and I want to limit the current (as written in the table) to 1µA, does it mean that this pullup resistor should have a value of 1.8M? This value seems strange.

[IvanRuiz]

Hello,

No, for the maximum supply currents, please refer to table 10 of the datasheet: https://www.nxp.com/docs/en/data-sheet/IMX6SDLIEC.pdf

BR,

Ivan.