Intel 8051: differenze tra le versioni

Versione delle 01:07, 21 mag 2009

Versione delle 01:18, 21 mag 2009

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The 8051's predecessor, the [[Intel 8048|8048]], was used in the keyboard of the first [[IBM PC]], where it converted keypresses into the serial data stream which is sent to the main unit of the computer. The 8048 and derivatives are still used {{As of|2007|alt=today}} for basic model keyboards.

TheL' '''8031''' wasera auna cutversione down''ritagliata'' version of the originaldell'originale Intel 8051 thatche didnon notconteneva containnessuna anymemoria internaldi programprogramma memoryinterna ([[Read-only memory|ROM]]). ToPer useusare thisquesto chip externaluna [[Read-only memory|ROM]] hadesterna tocontenente beil addedprogramma containingche thel'8031 programavrebbe thatdovuto theestrarre 8031ed wouldeseguire, fetchdoveva andessere executeaggiunta.

TheL' '''8052''' wasera anuna enhancedversione versionpotenziate of the originaldell'originale 8051 thatche featuredimplementava 256 bytes of internaldi RAM insteadinterna ofinvece di 128 bytes, 8 kiB ofdi ROM insteadinvece ofdi 4 kiB, ande aun thirdterzo temporizzatore a 16-bit timer. TheL' '''8032''' hadaveva thesele samestesse featurescaratteristiche excepteccetto forla thememoria internalprogramma ROM program memoryinterna. TheL' 8052 ande 8032 aresono largelyconsiderati consideredampiamente toobsoleti beperchè obsoletequeste becausecaratteristiche thesee featuresaltre andsono moreincluse arein includedtutti ini nearlymoderni allmicrocontrollori modernbasati su 8051 based microcontrollers.

==References==

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{{reflist}}

==ExternalCollegamenti linksEsterni==

*[http://www.atmel.com/products/8051/ Atmel]

*[http://www.cast-inc.com/cores/r8051xc2/index.shtml CAST, Inc. (8051 IP core provider)]