美国Twinhead International Corp.和Texas Ins-truments 两家公司即将推出一种20MHz 单片AT 系统逻辑.利用这种芯片,可以减少80286和80386 SX 系统的集成电路数目,从而缩小这些系统的电路版面积和降低它们的成本.这个型号为TH 4100的1μm ASIC 具有20500个门(80000多个晶体管),外形是208脚方形扁平封装(QFP).它含有系统总线控制/缓冲器、集成的外设控制器和EMS The two companies in the United States, Twinhead International Corp. and Texas Ins-truments, are about to launch a 20MHz monolithic AT system logic that can reduce the number of integrated circuits in the 80286 and 80386 SX systems and thereby reduce the circuit board area of ​​these systems Reducing their cost.The 1 μm ASIC, the TH 4100, features 20,500 gates (over 80,000 transistors) and a 208-pin quad flat package (QFP) with a system bus control / buffer, an integrated peripheral controller And EMS