Choosing 6 different schematic for Nrf52840

[Ekmekci]

Hello, 

I am trying to designe my own iot sensor board with nrf52840

For my sensor board i will just add lipo charger IC and MPU6050 (accelerometer) 

When i look at designe reference there are 6 different schematic.

I dont know which one i need to use, which one fit for me.

I just get accelerometer datas and power supply is 3.7V(1S) LiPo battery. I will use ultra lowpower mode.

I am waiting your valuable suggestions.

Best regards

[awneil]

Did you look at the general guidance at the start of section 7.3 "Reference circuitry" on page 528 of the Product Specification v1.0 ?

Did you look at the table which summarises the features of each configuration - page 529?

[Ekmekci]

Dear Awneil,

Yes i looked into Reference circuitry and table.

Actually first question is, What is the differences between VDDH and VDD, for example when i want to use 1S LiPo which one i need to choose.

Second question is, I dont want use USB and NFC, so i will choose config 6, but i dont know if i will not use DCDC i will cause problem ?

Best regards,

[awneil]

Ekmekci said:

What is the differences between VDDH and VDD

What does the Product Specification tell you?

[Ekmekci]

:)

If i could find, what does PS tell me, believe me i didnt post it here

I am just trying to make sure i am doing right thing. Because i will draw pcb and printed it. If i have mistake it will cause cost and time to me

If you have suggestion share with me

[awneil]

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