·forspace-constrainedapplicationsmax3460–max346+5v,fail-safe,20mbps,profibusrs-485/rs-422transceiversmax336+3v,high-speed,rs-485/rs-422transceiverinasot23packagemax3280e–max3284e:±15kvesd-protected,芯片解密，在这一新的系列中，有了两个方面的发展。一是从存储器方面来说，将ram容量大大增加，如f1611的ram容量增加到了kb。这样一来，希望将实时操作系统（rtos）引入msp430的，就不会因ram不够而发愁了。二是从外围模块来说，增加了i2c、dma、dac12和svs等模块。a)修正的哈佛结构,多总线技术以及流水线结构。将程序与数据存储器分开,使用多总线,取指令和取数据同时进行,以及流水线技术,这使得速度有了较大的提高。

theaat1154switchregisastep-downswitchingconverteridealforapplicationswherehighefficiency,smallsize,andlowripplearecritical.abletodeliver3awithaninternalpowermosfet,thecurrent-modecontrolledicprovideshighefficiency.fullyinternallycompensated,theaat1154simplifiessystemdesignandlowersexternalpartscount.inwaitmode,thecpuclockisturnedoff,soarethecpu(becauseoperatedbythecpuclock)andthewatchdogtimer.however,ifthepm22bitofpm2registeris“1”(on-chiposcillatorclockforthewatchdogtimercountsource),thewatchdogtimerremainsactive.becausethemainclock,andon-chiposcillatorclockareon,theperipheralfunctionsusingtheseclockskeepoperating.