3. Enter a full or partial part number and click the Next button
4. Select a specific part number from the search results. Note that a package type with an "R" suffix indicates a reel packaging option such as tape & reel.
5. Check the requested document from the list:
Environmental & Regulatory->Product->RoHS Certificate of Compliance
6. Click the Next button
7. Click the link under the primary results to download the RoHS certificate of compliance.
See the following KB article for more information:
MCU RoHS Compliance and Certificate
Chinese version
http://community.silabs.com/t5/Silicon-Labs%E4%B8%AD%E6%96%87%E6%8A%80%E6%9C%AF%E8%AE%BA%E5%9D%9B/MCU-%E5%90%88%E4%B9%8ERoHS%E6%A0%87%E5%87%86%E5%8F%8A%E8%AF%81%E6%98%8E/ta-p/156119