1 Reply Latest reply on May 3, 2020 4:01 PM by MoTa_728816

    PSOC4L - what is the voltage range for VDDIO?

    dame_4597801

      I don't see a max voltage range for VDDIO in the data sheet. And in Creator, cydwr shows that pin at 3.3V for some reason. Makes me wonder if VDDIO can run up to 5V (which is what I want). And of course this should be in the data sheet... or did I miss it? I looked through the Absolute Maximum Ratings section.

        • 1. Re: PSOC4L - what is the voltage range for VDDIO?
          MoTa_728816

          Hi,

           

          I also could not find specific max range of VDDIO in the data sheet,

          but I found the line below in the PSoC 4 Hardware Design Considerations AN88619

              VDDIO ≤ VDDD ≤ VDDA

           

          And in the PSoC 4: PSoC 4200L Datasheet I found the following, in the Table 1. Absolute Maximum Ratings

          001-VGPIO_ABS.JPG

           

          So I hope that we can assume

              VDDIO ≤ VDD+0.5

           

          So I tested by creating a simple project targeting device PSoC 4200L

           

          DWR > System

          I enter 5.0 for all VDDA, VDDD, VDDIO

          002-dwr-system.JPG

          Schematic

          003-pins.JPG

          main.c

          ==========

          #include "project.h"

           

          int main(void)

          {

              CyGlobalIntEnable; /* Enable global interrupts. */

           

              /* Place your initialization/startup code here (e.g. MyInst_Start()) */

           

              for(;;)

              {

                  Pin_2_Write(Pin_1_Read()) ;

              }

          }

          ==========

           

          And the project could be compiled

          004-compiled.JPG

           

          moto