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Microprocessors and Digital System with Examples - Handwritten Notes | ECE 331, Study notes of Electrical and Electronics Engineering

Michigan State University (MSU)Electrical and Electronics Engineering
Prof. Andrew Mason

Material Type: Notes; Professor: Mason; Class: Microprocessors & Digital Sys; Subject: Electrical & Computer Egr; University: Michigan State University; Term: Spring 2009;

Typology: Study notes

Pre 2010

Uploaded on 07/28/2009

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ExTERNAL Memory Exampcts Note Title 4/19/2009 - Tn Expanded operating mode - ports assigned to Dosses (addr. deta, contra ) ~ Used to interface with external memory or T/o dAwices - Consider: \lo x & externdl device Hbytes Pbits/byte - Benevic device , could loa “16 channel ALD “160 tate KAM 74 | wxe DATA LE — 16 butes—> 4 bit addrus $ 3 EX Connect MCU (-xpanded mo de) +o 16x88 RAM to create a B2xk extevnal meme “ Assome mamovy-Mapoed I /o 2 tow many add bits needed ? tT How many 6x8 devices needed ? ATA L Vato) > CE) r £0 R/@ > Mew o | Re CE Rs C6 [X86 1X6 2? Whid) device Ts vepe-[ lower address ?