nRF9160 esim foorprint and flash data

[bbslhb]

Hello, I have questions about esim card.

    1. Hardware footprint about esim chip.

I don't know which esim chip I will use.

So is there a common standard footprint? 

If yes I will use the standard footprint on the PCB board and don't need to worry about the esim could be mounted on my PCB board. 

    2. Do I need to flash phone number to the esim?

esim card is a chip like nRF9160, do I need to flash some data like phone number to make esim chip to work?

If yes and what interface is needed to flash phone number?

There are four lines connected to esim card in nRF9160DK: SIM_1V8, SIM_RST, SIM_CLK and SIM_IO.

Is these four lines enough to flash data to esim if data flash to esim chip is needed?

Thanks.

[Marjeris Romero]

Hi,

Usually when refering to embedded SIM (eSIM) we talk about a MFF2 form factor. If so, you can use the footprint used in the DK and follow the schematics in section 5.11 in the nRF91 DK user guide. You need lines SIM_1V8, SIM_RST, SIM_CLK, SIM_IO and GND to send data back and forth between the nRF9160 and the eSIM.

You can read more information about eSIM technology in this blogpost.

Best regards,

Marjeris