Handling of unused pins of STWLC38

[Ryoma]

Hello,

I'm currently considering using STWLC38.

I have a question about connecting unused pins.

How should unused pins be handled?

(GPIO, SCL, SDA, INTB, VS, etc.)

 

Regards,

Ryoma

[willzhou]

Hi Ryoma

 for unused pins i suggest floating, SCL/SDA is used for MCU/AP control or external to updated fw. If SCL/SDA is not used, i strongly suggest you set SDA/SCL pin as test point in the pcb for future update fw. 

• STEVAL-WLC38RX SCHEMATIC

 

[Ryoma]

Hi willzhou,

Thank you for your prompt response.

I'll set SDA/SCL pin as test point as you suggested.

 

Let me check again.

May I also OPEN the VS pin?

Currently, only Rx mode will be used.

[willzhou]

Vs pin can be open, you can refer to our small board

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