Product manual
4YPE - CARDS WERE DEVELOPED IN AND ARE AVAILABLE IN CAPACITIES UP TO '" 4HE READ
AND WRITE SPEEDS OF THESE CARDS ARE AND -"S RESPECTIVELY
4YPE ( X$ CARDS WERE lRST RELEASED IN HAVE THE ADVANTAGE OF A HIGHER DATA TRANSFER
SPEED 4HESE CARDS ARE ALSO AVAILABLE IN CAPACITIES UP TO '" WITH READ AND WRITE SPEEDS
OF AND -"S RESPECTIVELY 5NFORTUNATELY THE PRODUCTION OF 4YPE ( CARDS HAS NOW BEEN
DISCONTINUED DUE TO THEIR HIGH PRODUCTION COSTS
Type M X$ CARDS WERE lRST RELEASED IN AND THEIR CAPACITIES ARE UP TO '" 4HESE
CARDS ARE THE FASTEST X$ CARDS WITH READ AND WRITE SPEEDS OF AND -"S RESPECTIVELY
4HE ADVANTAGE OF X$ CARDS IS THAT THEY ARE FASTER THAN 3- CARDS --#S AND -3 CARDS )N
ADDITION THEIR SMALL SIZE MAKES THEM ATTRACTIVE IN PORTABLE LOWPOWER APPLICATIONS 3OME
OF THE DISADVANTAGES OF X$ CARDS ARE THEIR HIGHER COST BIGGER SIZE THAN SOME OTHER MEMORY
CARDS SUCH AS MICRO3$ AND THE FACT THAT THEY ARE PROPRIETARY TO &UJIlLM AND /LYMPUS 4HIS
MEANS THAT THERE IS NO PUBLICLY AVAILABLE DOCUMENTATION ON THEIR DESIGN AND IMPLEMENTATION
3.8 Secure Digital Card
3$ CARDS ARE PROBABLY THE MOST WIDELY USED MEMORY CARDS TODAY 4HE 3$ CARD WAS ORIGINALLY
DEVELOPED BY -ATSUSHITA 3AN$ISK AND 4OSHIBA IN 3$ CARDS NOWADAYS A USED IN MANY
PORTABLE DEVICES SUCH AS DIGITAL CAMERAS MOBILE PHONES 0$!S HANDHELD COMPUTERS VIDEO
RECORDERS '03 RECEIVERS VIDEO GAME CONSOLES AND SO ON
3TANDARD 3$ CARDS ARE AVAILABLE WITH CAPACITIES FROM -" TO '" 2ECENTLY A NEW TYPE
OF 3$ CARD CALLED THE HIGHCAPACITY 3$ CARD 3$(# HAS BEEN DEVELOPED WITH CAPACITIES
RANGING FROM TO '" )T HAS BEEN ANNOUNCED THAT A NEW SPECIlCATION CALLED E8TENDED
#APACITY 3$8# WILL ALLOW CAPACITIES TO REACH 4"
3$ CARDS ARE BASED ON --# BUT THEY HAVE A NUMBER OF DIFFERENCES 3$ CARDS ARE PHYSICALLY
THICKER THAN --#S AND WOULD NOT lT INTO --# SLOTS 4HE --# ON THE OTHER HAND CAN BE
EASILY INSERTED INTO 3$ CARD SLOTS )N ADDITION 3$ CARDS ARE SHAPED ASYMMETRICALLY TO PREVENT
THEM BEING INSERTED UPSIDE DOWN WHEREAS AN --# WOULD GO IN EITHER DIRECTION ALTHOUGH IT
WILL NOT MAKE CONTACT IF INSERTED UPSIDE DOWN )N ADDITION THE INTERNAL REGISTER STRUCTURES OF
THE TWO TYPES OF CARDS ARE NOT THE SAME
3.8.1 Standard SD Cards
3$ CARDS ARE AVAILABLE IN THREE DIFFERENT SIZES NORMAL 3$ MINI3$ AND MICRO3$ &IGURE
SHOWS THE THREE TYPES OF 3$ CARDS
.ORMAL 3$ CARDS HAVE THE DIMENSIONS s s MM AND A WEIGHT OF G
! WRITEPROTECT SWITCH IS PROVIDED ON THE CARD TO STOP ACCIDENTAL DELETION OF THE CONTENTS OF
Memory Card 113
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