You can but..
Insert a chart in the normal way but before you do so, make sure the selected cell is not near any data. Then right-click the chart, select Select Data and choose the series you want to add. The data source range will not, however, change with the changing pivot table.
it gives the error as " The reference is not valid. References for titles, values, sizes, or data labels must be a single cell, row or column" when i choose select data and choose the range from pivot table which i want to map