class="paramname">firstBlock</td><td>The address of the first block in the range. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">lastBlock</td><td>The address of the last block in the range.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>This function requests the SD card to do a flash erase for a range of blocks. The data on the card after an erase operation is either 0 or 1, depends on the card vendor. The card must support single block erase.</dd></dl