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Is GPIOx 1.8 V tolerant to 3.3V for GR5515GGBD and GR5513BEND 【Resolved】

903***645

2022-06-22 18:10:16

Hi Goodix

I use two GR5515GGBD (BGA55) and GR5513BEND (QFN40) chips. In the manuals I could not find an exact answer to the questions:

1. Can I supply a GPIO pin logic level 3.3V if the power supply domain to which it belongs (VDDIO_0 or VDDIO_1) operates from 1.8V? In other words: is the GPIO which operates at 1.8V tolerant to 3.3V (or even higher)?

2. If you can supply 3.3V, will it affect the micro-consumption of the whole chip?

Please help me to understand

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Van

2022-06-24 12:07:26

hi  
      The 1.8v IO   couldnot be supplied to  logic level 3.3V   ,the absolute maximum level for 1.8v IO  is 1.8v+0.3v .

    you can find the  absolut maximum rating in in chapter 13 of the datasheet

 if you supply 3,3v to 1.8v IO , maybe cause some damage  to  chipset




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