What peripherals do the nrf52832 chip need to function normally?

[Duncan Xu]

Hi,

I am designing my custom board with the nrf52832, which would perform the BLE and I2C functions. I wonder what necessary and basic peripherals it needs, like crystal, power regulator and so on? Any suggestion would help a lot.

Thanks in advance. 

[Andreas]

Hi,

 

See the reference schematic for the external passives required by the nRF52832 (downloadable HW files here).

 

Depending on what devices you connect to it, you might need more external passives. E.g. I2C communication will probably require pull-up resistors on the assigned pins. As long as you respect the 1.7V - 3.6V VDD range you do not need an external regulator. If you do you need one that brings the supply level down inside this range.

 

Best regards,

Andreas

[Duncan Xu]

Thank you, Andreas.

The schematic helps a lot. I noticed there are also some components connecting to the "ANT" pin. Since I don't access the ANT service, do I have to add those components to the "ANT" pin? 

Best,

Duncan

[Andreas]

Hi Duncan,

 

Not sure I udnerstood you correctly. ANT in the reference design does not refer to the ANT or ANT+ protocol. The ANT pin is I suppose short for 'antenna pin', the pin which RF signals are to be transmitted from and received at.

 

Seeing as you mention BLE operation, you will need all of these.

 

Best regards,

Andreas

[Duncan Xu]

I get it. Thank you very much.