# Underline long url and linebreak

I have a long url which I want to appear blue and underlined. Furthermore it must linebreak if the url is to long for a single line.

\documentclass[a4paper,10pt]{article}
\usepackage[hyphenbreaks]{breakurl}
\begin{document}
\underline{\href{http://www.atmel.com/Images/Atmel-11121-32-bit-Cortex-A5-Microcontroller\_SAMA5D3\_Datasheet.pdf}{http://www.atmel.com/Images/Atmel-11121-32-bit-Cortex-A5-Microcontroller\_SAMA5D3\_Datasheet.pdf}}
\end{document}}


The line-breaking is easy. The problem is when you want to have line-breaking and underlining. I tried what is described here: Is it possible to have italic and bold text, and linebreaks under the \underline{text} command?. The soul package also works but does not give really good results, meaning sometimes the underline is gone for a small part of the url and it gives often an extra space at the end of the url.

As far as I know, the most closer you can get to what you want is:

\documentclass[a4paper,10pt]{article}
\usepackage{hyperref}