I need the schematic circuit of the MIMXRT1020-EVK to use as starting point of a design
Hi Gustavo,
It is here:
i.MX RT1020 Evaluation Kit|NXP
Other than that, you might have a look at the design at the end of the following article: First Steps with the NXP i.MX RT1020 EVK Board | MCU on Eclipse
I hope this helps,
Erich