HI,
I am trying to power / connect my se052f via I2C.
I can successfully get my app to work with SE052PCB (the mini detachable board) with I2C but not with my prototype card. As far as I can tell, the only difference between my card and SE052PCB is the C1 and C2 0.022UF. The user manual notes these are optional passives.
My card manufacturer mentioned to try pull ups on SDA and SCL, i tried this without success, Also The SE052PCB works without pull-ups direct to my RPi, so am i missing something fundamental or are these caps necessary for i2c to power up the se?
Hi @RJOLSEN ,
What about the connection between your card and RPi board? Did you rework your card by adding the C1 and C2 0.022UF? Any difference then? Please kindly clarify.
Have a great day,
Kan
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Kan,
yes I tried with the caps, however no success. But i did find a potential issue with my setup. EPAD was not connected to VSS / GND (see NXP snip from manual). I have asked the card manufacturer , they asked to return the my prototypes to fix. Whats your thoughts on this, would this prevent 12C connection?
Hi @RJOLSEN ,
The EPAD is recommended to connect with GND for thermal reasons. I am wondering if you also connected pull-up on the ENA/RST pin, if this pin is floating the device might be held in reset state out of POR.
Have a great day,
Kan
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Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!
- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
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