Datasheet

- 5 -
datasheet SD Card
Rev. 1.0
MMBTFxxGWBCA-xMExx
3.0 INTRODUCTION
3.1 General Description
The SD/microSD is a memory card that is specifically designed to meet the security, capacity, performance and enviroment requirements inherent in
newly emerging audio and video consumer electronic devices. The SD/microSD will include a copyright protection mechanism that complies with the
security of the SDMI standard and will be faster and capable for higher Memory capacity. The SD/microSD security system uses mutual authentication
and a "new ciper algorithm" to protect from illegal usage of the card content. A none secured access to the user’s own content is also available.
The SD/ microSD communication is based on a
n advanced 9 and 8-pin interface (SD:9pin, microSD:8pin)) designed to operate in at maximum operating
frequency of 208MHz and 2.7V ~ 3.6V voltage range with 2 Type signaling(1.8V & 3.3V)*. More detail informations on the interface, and mechanical
description is defined as a part of this specification.
* High Speed mode Limited on this Specification.
3.2 System Features
• Compliant with SD Memory Card Specifications PHYSICAL LAYER SPECIFICATION Version 3.00
- Based on SD Memory Card Specification 3.0 compatible Test Device.
- Bus speed only support up to High Speed Mode (3.3V signaling, frequency up to 50MHz)
• T
argeted for portable and stationary applications
• Memo
ry capacity:
1) Standard Capacity SD Memory Car
d(SDSC) : Up to and including 2 GB
2) High Capacity SD Memory Card(SDHC) : More than 2GB and up to and including 32GB
3) Extended Capacity SD Memory Card(SDXC) :
More than 32GB and up to and including 2TB
• V
oltage range:
High Voltage SD Memory Card – Operating voltage range: 2.7-3.6 V
• D
esigned for read-only and read/write cards.
• Bus S
peed Mode
1) Default mode: Variable clock rate 0 - 25 MHz, up to 12.5 MB/sec inter
face speed (using 4 parallel data lines)
2) High-S
peed mode: Variable clock rate 0 - 50 MHz, up to 25 MB/sec interface speed (using 4 parallel data lines)
• Switch function
command supports High-Speed, and future functions
• C
orrection of memory field errors
• C
ard removal during read operation will never harm the content
• C
ontent Protection Mechanism - Complies with highest security of SDMI standard.
• Password Pr
otection of cards (CMD42 - LOCK_UNLOCK)
• W
rite Protect feature using mechanical switch
• Built
-in write protection features (permanent and temporary)
• C
ard Detection (Insertion/Removal)
• Application specific
commands
• C
omfortable erase mechanism
• W
eight : SD Card Max. 2.5g / microSD Card Max. 1g
3.3 System Block Diagram
Data
In/Out
NAND
Flash
Control
/ CLK
SD
Controller
SD / SPI
Interface
<SD / microSD Card><Host>