What is the difference between SD card and TF card?

According to different protocols, memory cards have different appearances and speeds, but the storage method is basically the same!

MOTO E680I and many other mobile phones can use SD cards

The full name of T-Flash (TransFLash), this is the latest generation of memory card specifications jointly launched by Motorola and SanDisk***. It uses the latest packaging technology and cooperates with SanDisk's latest NAND MLC technology and controller technology. The size (11mm x 15mm x1mm) is about half a SIM card. Trans-Flash Card is a member of the SD Card product family. It comes with an SD adapter and is compatible with any SD card reader. The TF card can be converted via SD card. After the SD card is used. T-Flash card is the smallest flash memory card on the market and is suitable for many multimedia applications. Trans-flash products are designed using SD architecture. The SD Association officially changed its name to Micro SD at the end of 2004 and has become the leading brand among SD products. One member.

Micro SD Card product design is designed using SD architecture and is almost the size of a fingernail.

The original name of Trans-flash Card is a member of the SD Card Product Association. The SDA Association officially changed its name to: Micro SD Card at the end of 2004.

The newly launched Micro SD memory card adopts the most advanced SLC control technology, allowing data to be transferred at a superb speed! Corresponding to high pixels, audio and video playback will be even more powerful. In addition, 3G mobile phones are ready to take off, and unlimited transmission speeds continue to increase, and the way in which mobile phones are used will undergo major changes. Functions such as digital photography, photography, video playback, MP3 music, games, personal account calendars, emails, and recordings. These powerful multimedia functions that could only be displayed on notebooks or desktop computers in the past have now been realized. On this little mobile phone! The development of mobile phones can be said to be rapid, and it is now a necessity in human life.

However, all the above-mentioned audio and video functions require a small memory card to be able to play their role. Applications in mobile phones range from the early MMC Card, SD Card to the new specifications of mini SD Card, RS-MMC Card, etc., and their development has evolved with the concept of "light, thin, short, and small"! Only then can digital products have greater room for development. The emergence of Micro SD memory card is completely in line with this advanced concept! It has the smallest memory card in the world, even only half the size of a mobile phone SIM card. Currently, several MOTO mobile phones use Micro SD memory cards. In this way, it can not only provide the advantages of being slim and low-cost like an embedded device, but also take into account the flexibility of a removable flash memory card. When paired with an adapter card, it can be fully compatible with all digital devices on the market that support SD memory cards. product.

Before the advent of Micro SD, mobile phone manufacturers used embedded memory. Although this type of module is easy to install, it has the problem of being unable to meet the actual needs of the trend - the capacity is limited. There is no room for upgrades. Micro SD imitates the application model of SIM cards, that is, the same card can be used in different models of mobile phones, so that mobile phone manufacturers no longer have to worry about the development and design of plug-in cards. Micro SD can be called a removable storage IC.

Micro SD product specifications:

◆ Size: 15mm × 11mm × 1mm

◆ Access speed: up to 12.5MB/S

◆ Capacity: 32MB ~ 128MB (currently the highest)

◆ Low power consumption, extend your battery life

◆ Can be connected to an adapter card, compatible with ordinary SD Card Application products

◆ Pin position: 8pin

MMC SD RSMMC miniSD TF

The MMC SD card can be directly inserted into the small E, and the miniSD RSMMC TF It can be used with a conversion adapter

MMC (MultiMedia Card) card, which can be divided into two working modes: MMC and SPI. MMC mode is the standard default mode and has all the characteristics of MMC. The SPI mode is the second mode available for MMC memory cards. This mode is a subset of the MMC protocol and is mainly used for cards that require only a small number of cards (usually 1) and low data transfer rates (and MMC Compared with the protocol) system, this mode can minimize the design cost, but the performance is not as good as MMC.

SD card is the abbreviation of Secure Digital Card. Literally translated into Chinese, it is "Secure Digital Card". It is a brand-new memory card jointly developed by Panasonic Corporation of Japan, Toshiba Corporation and SANDISK Corporation of the United States. product. SD memory card is a completely open standard (system), mostly used in MP3, digital camcorders, digital cameras, e-books, AV equipment, etc., and is especially widely used in ultra-thin digital cameras. The SD card is consistent with the MultiMedia Card in appearance, is slightly thicker than the MMC card, and has a much larger capacity. And compatible with MMC card interface specifications. People can't help but suspect that the SD card is an upgraded version of MMC. In addition, the SD card has 9 pins, and the purpose is to increase the transmission speed by changing the transmission mode from serial to parallel. Its reading and writing speed is faster than that of MMC card, and at the same time, it is more secure. The biggest feature of the SD card is that it can ensure the security and confidentiality of data through the encryption function. It also has copyright protection technology, and the copyright protection technology used is the CPRM technology (Content Protection for Recordable Media) used in DVD.

RSMMC card is also called mini MMC card, the abbreviation of Reduced Size MultiMediaCard, issued by the MMCA Association. The RSMMC card inherits the low power consumption characteristics of the MMC card. Its shape is exactly half the size of the MMC card, with a volume of 24mm x 18 mm x 1.4mm and a weight of only 0.8 grams. It is one of the smallest and lightest memory cards currently available. It has the same characteristics as an MMC card. It also has 7 pins. It can be used like an MMC card by installing a special adapter on the back. RSMMC cards have also been widely supported by mobile phone manufacturers.

The miniSD card is a smaller memory card developed based on the Flash Memory Card (Chinese name: flash memory card) used in digital cameras, PDAs, etc., which is smaller and more suitable for small mobile phones. Although the size and interface shape of the miniSD card are different from the original SD card, the electrical standards such as the interface are the same to ensure compatibility. Insert the miniSD into the special adapter, and the miniSD card can be read and written through the original SD card slot. However, it does not have a lock function to prevent writing like an SD card. The miniSD card has 2 more interfaces than the 9 of the SD card, and has 11 signal lines. The extra 2 signal lines are prepared for future expansion performance. For example, it can be used for antenna connections for short-range wireless communications such as contactless ICs. The remaining 9 signal lines are the same standard signal lines as the original SD card.

TF card, short for TranFlash, is a brand new ultra-small large-capacity mobile memory card. The size is about 1/4 of the most popular SD memory card currently on the market, or 1/2 of the mobile phone SIM card. . You can store the photos, downloaded MP3 or audio and video files in the TF card at will; you can also connect to the computer through the SD card adapter and copy the files from the computer to the card. The transfer is very convenient and the collected memory can be expanded at any time. capacity.