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home > products > Flash > MMC > MMCmicro

MMCmicro

MMCmicro positioning

The Flash Card Solution will be segmented by the different mobile phones requirement even though
RS-MMC / MMCmobile become major card solution.

function characteristics
High-end
  • Entertainment
  • Communication
  • Information
  • Finance
  • 3D Game, VOD, DMB
  • MP3, DSC/DVC
  • Large LCD (2.8”)
  • Wireless LAN
  • Navigation (GPS)
  • Dual Slot (SIM/Card)
  • MMC
  • RS-MMC
  • MMCmobile
  • SecureMMC
Thin,
Light,
Small
  • Communication
  • Information
  • Finance
 Mobile Phone Thickness Trend
  • Dual Slot (SIM/Card)
  • MMCmicro
Low-end
  • Communication
  • Finance
  • Voice
  • Messaging (SMS, MSM) / Chatting
  • M-Commerce
  • Single Slot (SIM or Card)
  • Embedded
    Flash
  • SIM+Card
what is MMCmicro?
  • Form Factor Size : 12.0mm x 14.0mm x 1.1mm

Card top side view
Card top side view

  • 10pin, 12mm x 14mm x 1.1mm
  • Compatible with MMC Interface
    : x1/x4 4bit Data Bus (based on MMC4.0)
  • 1GByte with 5Stack Technology
    : 4 x 2Gbit + 1 Controller
  • Shallow notch for preventing Flying-out
  • Support the hot-swapping by the socket
what is the advantage for MMCmicro?
  • Higher Performance
    : Use the high performance technology SLC(Single Layer Cell)
    • - X1 MMCmicro : > 1.9MB/s
    • - X4 MMCmicro : > 7.0MB/s
  • Higher Density
    : Use 5-Stack technology
    • - 512MB in early ’05, 1GB in late ‘05
  • Stronger Mechanical Spec
    : Verified ESD immunity in current MMC
    • - Contact : 4KV, Air Discharge : 15KV
  • Open Standard Interface
    : Use MMC interface
comparison between MMCmicro Trans-Flash
items MMCmicro Trans-Flash
Form Factor 12mm x 14mm x 1.1mm 11mm x 15mm x 1.0mm
Interface MMC 3.X & MMC 4.X SD
# of Pin 10pin (1/4 data pins) 8pin (4 data pins)
Frequency 20MHz~52MHz 25MHz
Technology SLC Flash / MLC Flash MLC Flash

Comparison btw.MMCmicro Trans-Flash

  • Performance Comparison
    • - PC Type : AMD Athlon XP 1900+ 1.46GHz
    • - O/S : Win2000, Win XP
    • - Test size : 10MB
    • - Test Program : HD-Bench
items PC O/S sequential write random write
SanDisk 128MB Trans-Flash 2000 1.85 0.76
XP 1.71 0.76
SEC MMCmicro 128MB 2000 7.44 6.52
XP 7.12 6.5
PDC 128MB MMC 2000 1.93 0.69
XP 1.87 0.69
  • MMC has better performance than Trans-Flash nevertheless supporting 1 bit data bus !!!
benchmark results at Tom's hardwarevisit