Multimedia Card

Multimedia Card (MMC) is one of Flash Memory type. MMC uses two technology :
1. ROM Technology for read only application.
2. Flash Technology for read/write application.

MMC for Phone

1. First MMC technology is MMC Standard. Uses 7-pin Standard Multimedia Card. Only has 2 MB/s max transfer data.

2. Next MMC technology is RS-MMC (RS = Reduced Size). The difference between RS-MMC and MMC Standard is, RS-MMC only has 1/2 dimension size than MMC Standard. RS-MMC still uses 7 pin Standard Multimedia Card. Only has 2 MB/s transfer data.

3. Next MMC technology is HS-MMC (HS = High Speed). Using 13 pin Multimedia Card. Have 8 configuration transfer data. And max transfer data is 52 MB/s and the min is 20 MB/s, depends on device support transfer data.

4. Next MMC Technology is Dual Voltage Multimedia Card, which has function host in 1.8 V and 3 V. Note: 1.8 V and 3 V are just the middle operation value. The truth is : For 1.8 V host have range operate 1.65 ~ 1.95 V and for 3 V host have range operate 2.7 ~ 3.6 V.

5. Next MMC Technology is SecureMMC - this multimedia card is used for security requirements of future consumer, business and industrial applications (such as mobile e-commerce, banking and copyright protection)

So :
1) For dimension, Multimedia Card has two types:
- MMC Standard
- RS-MMC
2) For Speed, Multimedia Card has two types:
- 7 pin
- 13 pin
3) For Host, Multimedia Card has two types:
- 1.8 V
- 3 V
4) For Security, Multimedia card has two types:
- Not Secure
- Secure