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DATATRAVELER 2.0:
7.2 COMPACTFLASH (CF) CARDS
CompactFlash, or CF cards, were the first small form factor flash cards introduced in
1994. CF cards incorporate a controller and are about the size of a matchbook.
CompactFlash cards incorporate an Integrated Device Electronics (IDE) interface
similar to hard drives and ATA PC Cards. Kingston is a member of the CompactFlash
Association, which sets the specifications for CF cards.
Kingston offers standard CompactFlash cards as well as a high-performance Elite Pro line.
Kingston’s Elite Pro CompactFlash cards are among the fastest available in the
industry. The high transfer rate is ideal for use on newer devices such as high-
megapixel digital cameras, to ensure that the cameras save pictures faster and are
quickly ready for the next shot.
CompactFlash cards come in a Type I form factor:
7.3 SECURE DIGITAL (SD) CARDS
Secure Digital, introduced in late 2001, is a second-generation and more popular
derivative of the MultiMediaCard (MMC) standard (see section 7.4) that is backward-
compatible with current MMC cards.
The Secure Digital format includes several important technological advancements over
MMC. These include the addition of cryptographic security protection for copyrighted
data/music and a 4X increase in data transfer rates. The SD Card Association sets the
specifications for Secure Digital cards.
To help support higher-capacity cards, SD cards are slightly thicker than the original
MMC cards. This means that devices designed to support SD cards may also accept
MMC cards (if the host device is not strictly limited to SD media for data security
reasons). However, devices exclusively designed for MMC cards will not support the
thicker SD cards at this time.
Secure Digital cards
feature cryptographic
security protection and
a 4x increase in data
transfer rates over MMC.
FLASH MEMORY KINGSTON TECHNOLOGY 10
kingston.com/flash
COMMITTED TO MEMORY
INTERFACE FLASH TYPE VOLTAGE PIN COUNT SIZE IN MM
Hi-Speed USB 2.0 NAND 5 Volts 4 25.42 x 98.17 x 15.40
INTERFACE FLASH TYPE VOLTAGE PIN COUNT SIZE IN MM
CompactFlash NAND 3.3 and 5 Volts 50 Type I:
36.4 x 42.8 x 3.3
(Includes built-in
controller)