SDSDJ-512-814-J SanDisk, SDSDJ-512-814-J Datasheet - Page 7

• Manufacturer Part Number: SDSDJ-512-814-J
• Description: MEMORY CARD SD 512MB
• Manufacturer: SanDisk

Specifications of SDSDJ-512-814-J

• Memory Size: 512MB
• Memory Type: Memory Card - Standard SD™
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Introduction
CHAPTER 1
General Description
In the SanDisk SD Card Product Family (SD Card, miniSD Card, and microSD Card), cards
are flash memory specifically designed to meet the security, capacity, performance and
environmental requirements inherent in next generation mobile phones and consumer
electronic devices. The SanDisk SD Card Product Family includes a faster content protection
system that complies with the security of the SDMI (Secure Digital Music Initiative) standard
and has a higher memory capacity. In the SanDisk SD Card Product Family, card content is
protected from illegal use by mutual authentication and a new cipher algorithm. Unsecured
access to the user's own content is also available. With some additions, the physical form
factor, pin assignment, and data transfer protocol are forward compatible with future SanDisk
SD Card products.
Cards in the SanDisk SD Card Product Family are based on a 9-pin interface designed to
operate in a maximum operating frequency of 50 MHz. The SD Card specifications were
originally designed by Matsushita Electric Industrial Co. Ltd., SanDisk Corporation and
Toshiba Corporation (SD-3C, LLC). SD card specifications are now maintained, controlled and
assigned by the SD-3C, LLC. The SanDisk miniSD Card and SanDisk microSD Card are both
based on the SD Card specification.
The interface for SD Card products allows for easy integration into any design, regardless of
which type of microprocessor is used. In addition to the interface, SD Card products offer an
alternate communication-protocol based on the SPI standard.
Currently, a card in the SanDisk SD Card Product Family provides up to 16 GB of memory
using flash memory chips, which were designed especially for use in mass storage applications.
In addition to the mass storage-specific flash memory chip, cards in the SD Card Product
Family includes an on-board intelligent controller which manages interface protocols; security
algorithms for content protection; data storage and retrieval, as well as Error Correction Code
(ECC) algorithms; defect handling; power management; wear leveling and clock control.
Figure 1-1 SanDisk SD Card Block Diagram
Data In/Out
SD Bus/SPI Bus
SanDisk
Flash
Interface
Single Chip
Modules
Control
Controller
SanDisk SD Card
© 2007 SanDisk Corporation
1-1
Rev. 2.2, 06/07