topic PN7462 LPC-Link voltages in NFC

PN7462 LPC-Link voltages

kurtsterckx — Mon, 28 May 2018 09:00:23 GMT

Hello,

I want to use the PN7462 for a new design powered by 5V. I try to avoid using a extra 3V3 power supply, because lack of bord space.

I would like to know of the SWDIO and SWDCLK are 5V tolerant.

The same for the DWL_REQ signal, is this 5V tolerant?

I know that many pins of the chip are not 5V tolerant (powered by VPVDD_IN), so I want to be sure.

Best Regards,

Kurt

Re: PN7462 LPC-Link voltages

weidong_sun — Tue, 29 May 2018 06:18:43 GMT

Hello Kurt,

LPC-LINK only supports 3.3V, not support 5V. But for PN7462 design, you don't need to add DCDC for 3.3V purpose, "PVDD_OUT" pin of PN7462 can provide 3.3V output for external digital IO. you can get the usage from datasheet.

the 3.3V voltage can be connected to SWD interface.

Have a nice day!

TIC Weidong Sun

Re: PN7462 LPC-Link voltages

kurtsterckx — Tue, 29 May 2018 08:36:23 GMT

Hello Weidong Sun,

Thanks for your execellent response!

Regards,

Kurt