TSMC September 2006 Sales Report

Hsinchu, Taiwan, R.O.C. – October 9, 2006 - TSMC (TAIEX: 2330, NYSE: TSM) today announced its net sales for September 2006: on an unconsolidated basis, sales were NT$26,859 million, a decrease of 0.5 percent from August 2006 and an increase of 6.5 percent over September 2005. Revenues for January through September 2006 totaled NT$239,946 million, an increase of 30.8 percent over the same period in 2005.

On a consolidated basis, net sales for September 2006 were NT$ 27,198 million, a decrease of 0.3 percent from August 2006; revenues for January through September 2006 totaled NT$ 242,451 million.