can i use 1.8v for VBAT power supply of PN7150?

[jbsgo]

Actually, I have a hikey lemaker board.

So i want to connect hikey board with PN7150. But hikey board just supports 1.8v supply( doesn't support 3.3v ).

When i read user manual for PN7150, PN7150 needs 3.3v for VBAT power supply.

If i connect 1.8v on hikey board to VBAT(PVDD) of PN7150, what happen? what is phenomenon??

(  does it just affect RF performance??)

Should I use the Level Shifter( 1.8v->3.3v) ??

[weidong_sun]

Hi bongsu,

   See below, please!

VBAT : MIN --- 2.7V (reader),   MAX---5.5V.    if you use 1.8V, PN7150 can't normally work.

VDD(PAD): It is PVDD , the voltage is VDDIO , so you can use 1.8V or 3.3V. 

PVDD is just IO voltage between HOST, it doesn't afftect RT performance.

Have a nice day!

NXP TIC team Weidong Sun

[jbsgo]

Thank you for answer.

Unfortunately there is just one common pin(vbat/pvdd) for vbat and pvdd on my pn7150 module board(PN7150BBBM). So i can't seperate pvdd and vbat. To connect hikey board, I think I have to use level shifter(1.8v~3.3v) for pvdd/vbat and i2c , gpios because hikey board doesn't support 3.3v.

is this right solution?