Exp No 3 Sistemas de Memoria

8/13/2019 Exp No 3 Sistemas de Memoria

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U N A V E N TA J A I M P O RTA N T E D E L O S S I S T E M A S D I G I T A L E S S O B R E L O S A N A L G I C O S E S :

L A C A PA C I D A D D E A L M A C E N A R G R A N D E SC A N T I D A D E S D E I N F O R M A C I N P O R P E R I O D O S D E

T I E M P O D E T E R M I N A D O S O D E M A N E R A P E R M A N E N T E .

Sistemas de Memoria


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Memoria principal

Cuando es usado como l mismo, normalmente se refiere alsistema principal de memoria, el cual, retiene lasinstrucciones que el microprocesador ejecuta y lainformacin con la que estas instrucciones trabajan.


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Memoria de semiconductor

La memoria de semiconductor: es un conjunto deceldas de almacenamiento binario y de circuitos asociadospara transferir la informacin de entrada y salida de dichasceldas.


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El sistema de memoria

Memorias de semiconductor:

ROM (Read Only Memory)OTPROM ( One Time Programmable ROM)EPROM ( Electrically Programmable ROM)EEPROM ( Electrically Erasable / Programmable ROM)FLASH (Electrically Erasable / Reprogrammable

ROM)

RAM (Random Access Memory)DRAM ( Dinamic RAM)SRAM ( Static RAM)

NVRAM ( Non- V olatile RAM)


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Formatos de Memoria de

semiconductor estndar


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DIP (Dual In Line Package).

La memoria en este

formato tiene unancho de palabra de4 bits y unacapacidad mximade 512 Knibbles.


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SIPP (Single In Line Pin Package).

La memoria en este

formato tiene 30terminales, unancho de palabra de8 bits, y unacapacidad mximade 1MByte.


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SIMM(S ingle In Line Memory Module ).

Principios de los aos80s a finales de los 90s,

El formato de 30terminales tiene anchoun de palabra de 8 bits,con almacenamiento de256KB, 1MB, 4MB y

16MB.Los mdulos de 72terminales cuentan conun ancho de palabra de32 bits, con capacidadde 1MB, 2MB, 4MB,8MB, 16MB, 32MB,64MB, 128MB.

Trabajan en pares


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DIMM(Double In Line Memory Module ).

Ancho de palabra

de 64 bits, y unacapacidad de 8 a512 Mbytes.


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Tipos comunes de DIMMs

72-pin SO-DIMM (not the same as a 72-pin SIMM), used for FPMDRAM and EDO DRAM100-pin DIMM, used for printer SDRAM144-pin SO-DIMM, used for SDR SDRAM

168-pin DIMM, used for SDR SDRAM (less frequently for FPM/EDODRAM in workstations/servers)172-pin MicroDIMM, used for DDR SDRAM184-pin DIMM, used for DDR SDRAM200-pin SO-DIMM, used for DDR SDRAM and DDR2 SDRAM

204-pin SO-DIMM, used for DDR3 SDRAM214-pin MicroDIMM, used for DDR2 SDRAM240-pin DIMM, used for DDR2 SDRAM, DDR3 SDRAM and FB-DIMMDRAM

244-pin MiniDIMM, used for DDR2 SDRAM


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DIMM Velocidades de operacin

SDR SDRAM DIMMs - These first synchronous registered DRAM DIMMs had the same bus frequency for data, address and control lines.PC66 = 66 MHzPC100 = 100 MHzPC133 = 133 MHz

DDR SDRAM (DDR1) DIMMs - DIMMs based on Double Data Rate (DDR) DRAM have data but not the strobe at double the rate of the clock.This is achieved by clocking on both the rising and falling edge of the data strobes.

PC1600 = 200 MHz data & strobe / 100 MHz clock for address and controlPC2100 = 266 MHz data & strobe / 133 MHz clock for address and controlPC2700 = 333 MHz data & strobe / 166 MHz clock for address and controlPC3200 = 400 MHz data & strobe / 200 MHz clock for address and control

DDR2 SDRAM DIMMs - DIMMs based on Double Data Rate 2 (DDR2) DRAM also have data and data strobe frequencies at double the rate of theclock. This is achieved by clocking on both the rising and falling edge of the data strobes. The power consumption and voltage of DDR2 issignificantly lower than DDR(1) at the same speed.

PC2-3200 = 400 MHz data & strobe / 200 MHz clock for address and controlPC2-4200 = 533 MHz data & strobe / 266 MHz clock for address and controlPC2-5300 = 667 MHz data & strobe / 333 MHz clock for address and controlPC2-6400 = 800 MHz data & strobe / 400 MHz clock for address and controlPC2-8500 = 1066 MHz data & strobe / 533 MHz clock for address and control

DDR3 SDRAM DIMMs - DIMMs based on Double Data Rate 3(DDR3) DRAM have data and strobe frequencies at double the rate of the clock.This is achieved by clocking on both the rising and falling edge of the data strobes. The power consumption and voltage of DDR3 is lower than DDR2of the same speed.

PC3-6400 = 800 MHz data & strobe / 400 MHz clock for address and controlPC3-8500 = 1066 MHz data & strobe / 533 MHz clock for address and controlPC3-10600 = 1333 MHz data & strobe / 667 MHz clock for address and controlPC3-12800 = 1600 MHz data & strobe / 800 MHz clock for address and controlPC3-14900 = 1866 MHz data & strobe / 933 MHz clock for address and controlPC3-17000 = 2133 MHz data & strobe / 1066 MHz clock for address and control
http://en.wikipedia.org/wiki/SDR_SDRAMhttp://en.wikipedia.org/wiki/DDR_SDRAMhttp://en.wikipedia.org/wiki/DDR2_SDRAMhttp://en.wikipedia.org/wiki/DDR3_SDRAMhttp://en.wikipedia.org/wiki/DDR3_SDRAMhttp://en.wikipedia.org/wiki/DDR2_SDRAMhttp://en.wikipedia.org/wiki/DDR_SDRAMhttp://en.wikipedia.org/wiki/SDR_SDRAM


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L O S D I S P O S I T I V O S D E A L M A C E N A M I E N TO M A S I V O E NL A C O M P U TA D O R A , C O N T I E N E N G R A N D E SC A N T I D A D E S D E I N F O R M A C I N D E M A N E R AP E R M A N E N T E .

L O S D I S P O S I T I V O S M S C O M U N E S S O N :

D I S C O S D U R O S .U N I D A D E S D E C I N TA M A G N T I C A .U N I D A D E S D E C D - R O M .Z I P D R I V E S .D V DM E M O R I A S U S B ( F L A S H )

B L U - R AY D I S C

Almacenamiento masivo


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DISCO COMPACTO GRABABLE DISCO COMPACTO REGRABABLE

FORMATOS DVD


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FORMATOS DVD


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Documents

Exp No 3 Sistemas de Memoria