PSDsoft Express & UPSD33XX documentation

[ngml]

Hi,

I am trying to find documentation such as white papers user manuals etc. etc, from PSDsoft Express software, and the  UPSD33XX MCU's, but there is nothing available on the STMicroelectronics website.

I know that these are obsolete products, but there must some archive on the net where this information has been stored,

Thanks for any suggestions as to where this information might be stored.