ST25DV04KC -IE Power external device

[CyrilPerie]

Hi everyone,

I am using a ST25DV04KC-IE8T3 connected to a low power consumption display.

I'm trying to power the display with ST25 when ST25 detect the RF. (the display can work from 1.5V to 5V with just on/off configuration).

ST25DV04KC-IE8T3 GPO is open drain, can I enter a command which can allow this operation described above ?

Thank you so much.

 

[JL. Lebon]

Hello, 

It is not completely clear to me:
- Do you want to provide power to the display from the ST25DV? In this case the GPO output is not the correct output to use. VEH (energy harvesting output) should be used.
- Or do you want to trigger the power of the display from ST25DV? In this case, the GPO output is the correct signal to use.

Best regards.