TSMC Monthly Sales Report - February 2005

Hsinchu, Taiwan, R.O.C. -- March 9, 2005 -- Taiwan Semiconductor Manufacturing Company Ltd. (TSMC) (TAIEX: 2330, NYSE: TSM) today announced that net sales for February 2005 totaled NT$17,200 million, and that revenues for January through February 2005 were NT$38,043 million.

Ms. Lora Ho, TSMC vice president and chief financial officer, noted that, “Due to fewer working days as well as fewer wafer shipments, net sales for February 2005 decreased by 17.5% compared to January 2005. On a year-over-year basis, net sales for February 2005 decreased 6.4%.”

“TSMC’s January and February results were exactly in line with our internal estimations. Our first quarter 2005 guidance, which was announced on January 27, remains unchanged,” Ms. Ho added.

Sales Report: (Unit: NT$ million)

Net Sales

2005(1)

2004

Increase (Decrease) %

February

17,200

18,385

(6.4)

January through February

38,043

37,541

1.3

(1): Year 2005 figures have not been audited.