Shares of Powerchip Semiconductor (PWSCF) edged down 0.43 percent, or 20 cents, to 46.00 Taiwan dollars. Shares of industry giant Taiwan Semiconductor Manufacturing Co. (TSM) ended flat at 124.00 Taiwan dollars, after falling as much as 4.03 percent during the day. The world's biggest microchip foundry said last Friday that its August sales surged 129 percent year-on-year to hit a record on continued growth in the global microchip market.