TSMC December 2006 Sales Report

Hsinchu, Taiwan, R.O.C. - January 10, 2007 - TSMC (TAIEX: 2330, NYSE: TSM) today announced its net sales for December 2006: on an unconsolidated basis, sales were NT$22,376 million, a decrease of 9.4 percent from November 2006 and a decrease of 18.4 percent from December 2005. Full-year sales for 2006 increased 18.6 percent over 2005, to a record high of NT$313,882 million.

On a consolidated basis, net sales for December 2006 were NT$ 22,871 million, a decrease of 8.7 percent from November 2006; full-year sales for 2006 totaled NT$ 317,407 million.