Adafruit DS1307 Real Time Clock Not working at 3,3V

[bob59372]

Hi. I'm using the Adafruit DS1307 Real Time Clock with a Raspberry Pi Model 4b. It's meant to work at 3.3V, but I can only get it to work at 5V.

Does anyone have any suggestions?

Thanks.

[dastels]

It requires 5v. From https://learn.adafruit.com/adding-a-rea ... ng-the-rtc

Connect VCC on the breakout board to the 5.0V pin of the Pi (if using DS1307)
Connect VCC on the breakout board to the 3.3V pin of the Pi (if using PCF8523 or DS3231)

Dave

[bob59372]

Thank you.

I need a comment from an Adafruit Engineer on this, due to a product claim.

Kind regards,
Bob

[adafruit_support_bill]

What claim are you referring to? The product description says that it requires 5v power to work.
https://www.adafruit.com/product/3296

[dastels]

I assume you are referring to

(although we've used it with 5V power and 3.3V logic successfully)

That just says you can interact with it using 3.3v logic, i.e. a processor that uses 3.3v logic. Like the Pi, for instance. It does not say it can be powered with 3.3v.

Dave