Hello, my name is Fabian, I've been assigned to support your case.
Thank you for your interest in our products.
Unfortunately, this channel is only for mass-market products. PCF7900 is an automotive device and, I'm not sure if NXP has a demo to drive it.
My recommendation would be to please contact the person who provided you the PCF7900 or, please check this with any of our Distributors.
Best Regards,
Fabian
