SDMJ-32 SanDisk, SDMJ-32 Datasheet - Page 3

• Manufacturer Part Number: SDMJ-32
• Manufacturer: SanDisk
• Type: MultiMedia Cardr

Specifications of SDMJ-32

• Density: 32MByte
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Package Type: MMC
• Mounting: Socket
• Pin Count: 7
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Programmable: Yes
• Lead Free Status / RoHS Status: Compliant

Revision 1.3
© 2005 SanDisk Corporation
1.1
1
General Description
Introduction
The SanDisk MultiMediaCard and Reduced-Size MultiMediaCard (RS-MMC) are very
small, removable flash storage devices, designed specifically for storage applications that
put a premium on small form factor, low power and low cost. Flash is the ideal storage
medium for portable, battery-powered devices. It features low power consumption and is
non-volatile, requiring no power to maintain the stored data. It also has a wide operating
range for temperature, shock and vibration.
The MultiMediaCard and RS-MultiMediaCard are well suited to meet the needs of small,
low power, electronic devices. With form factors of 32 mm x 24 mm and 1.4 mm thick for
the MultiMediaCard and 18 mm x 24 mm x1.4 mm for the RS-MultiMediaCard, these
cards can be used in a wide variety of portable devices like mobile phones, and voice
recorders.
To support this wide range of applications, the MultiMediaCard Protocol, a simple seven-
pin serial interface, is designed for maximum scalability and configurability. All device and
interface configuration data (such as maximum frequency, card identification, etc.) are
stored on the card.
The SanDisk MultiMediaCard/RS-MultiMediaCard interface allows for easy integration
into any design, regardless of microprocessor used. For compatibility with existing
controllers, the card offers, in addition to the card interface, an alternate communication
protocol, which is based on the Serial Peripheral Interface (SPI) standard.
The MultiMediaCard/RS-MultiMediaCard provides up to 256 million bytes of memory
using SanDisk Flash memory chips, which were designed by SanDisk especially for use in
mass storage applications. In addition to the mass storage specific flash memory chip, the
MultiMediaCard/RS-MultiMediaCard includes an on-card intelligent controller which
manages interface protocols and data storage and retrieval, as well as Error Correction
Code (ECC) algorithms, defect handling and diagnostics, power management and clock
control.
Figure 1-1
MMC/SPI Bus
Interface
MultiMediaCard/RS-MultiMediaCard Block Diagram
SanDisk MultiMediaCard/RS-MultiMediaCard
Single Chip
Controller
SanDisk
1-1
MultiMediaCard/RS-MultiMediaCard Product Manual
Data In/Out
Control
Flash Cards
SanDisk
Chapter 1 – Introduction
03/22/05