** Chip designer ARM Holdings top faller onBritain's FTSE 100 on Monday, extending previoussession's weakness which came on the heels of U.S. chipmakerMicrochip Technology's sales warning.
** Microchip said quarter hurt by lower business activity inSeptember, particularly in China.
** Demand concerns also took their toll on the stock asfears about faltering global economic growth ramped up, hittingequities across the world.
** A 2 pct drop in ARM takes shares down to near three-monthlows. Stock risen more than 400 pct in past five years.
** CSR, whose chips are used in products such asspeaker docks and Apple-owned Beats headphones, and which fellsharply on Friday, dropped a further 1.8 pct. Microchip, whichis in pursuit of the company, has until Oct. 15 to decidewhether to make an offer for CSR or walk away.
** Imagination Technologies, whose technology is inApple's iPhone, shed 2.8 pct. (RM://tricia.wright1.thomsonreuters.com@reuters.net)