ESMMC256

64MB/128MB/256MB/512MB MultiMediaCardTM Description ESMMC64 ESMMC256 / / ESMMC128 TM Features / Operating Voltage: 2.7V ~ 3.6V Password data access protection Small erase block size of 512 bytes, tagged erase supported. Read block size programmable between 1 and 2048 bytes Damage free powered card insertion and removal 4KV ESD protection Read speed Sustained: 13.7Mbits/s Burst(one block): 20Mbit/s Write speed Sustained: 2.8Mbits/s Burst(one block): 20Mbit/s Up to 10 stacked card (at 20MHz, Vcc = 2.7V to 3.6V) Access time: 300µs Low power dissipation ESMMC512 are 64MB up to 512MB MultiMediaCard . These are the highly integrated flash memory with serial and random accessible via a dedicated serial interface optimized for fast and reliable data transmission. They are fully compatible to a new consumer standard, called the MultiMediaCard system standard TM TM defined TM in the MultiMediaCard system specification. system is a new The MultiMediaCard mass-storage system based on innovations in semiconductor technology. It has been designed to provide an inexpensive, mechanically robust storage medium in card form for multimedia consumer applications and mobile devices (handheld PCs, digital cameras, MP3 players, etc.) to store, copy, and move information like a small hard drive. Pin Definition Pin No. 1 2 3 4 5 6 7 Name RSV CMD VSS1 VCC CLK VSS2 DAT Type NC I/O/PP/OD S S I S I/O/PP Description No connection Command/Response Ground Power Supply Clock Ground Data Eorex Corporation www.eorex.com 1/8 64MB/128MB/256MB/512MB MultiMediaCardTM Physical Outline Front Back Eorex Corporation www.eorex.com 2/8 64MB/128MB/256MB/512MB MultiMediaCardTM Architecture Eorex Corporation www.eorex.com 3/8 64MB/128MB/256MB/512MB MultiMediaCardTM Temperature Characteristic Parameter Storage temperature Operating temperature Junction temperature Min -40 -25 -20 Max 85 85 95 Unit ℃ ℃ ℃ Electrical Characteristics 1. Absolute Maximum Ratings Parameter Supply voltage Total power dissipation ESD protection Input voltage Output voltage High-level output current Low-level output current VImax VOmax VOHmax IOHmax -4 -0.5 -0.5 -100 150 Symbol Vcc Min -0.5 Max 4.6 0.2 4 Vcc+0.5 Vcc+0.5 Unit V W KV V V mA mA Remark Human body model ≦max(Vcc) ≦max(Vcc) Short cut protected Short cut protected 2. Bus Signal Line Load The total capacitance CL of each line of the MultiMediaCard each card connected to this line: CL = CHOST + CBUS + N*CCARD Where N is the number of connected cards. Requiring the sum of the host and bus capacitance’s not to exceed 30pF for up to 10 cards, and 40pF up to 30 cards, the following values must not be exceeded: TM bus is the sum of the bus master capacitance CHOST, the bus capacitance CBUS itself and the capacitance CCARD of Parameter Pull-up resistance for CMD Pull-up resistance for DAT Bus signal line capacitance Bus signal line capacitance Signal card capacitance Maximum signal line inductance Eorex Corporation www.eorex.com Symbol RCMD RDAT CL CL CCARD Min 4.7 50 Max 100 100 250 100 7 16 Unit KΩ KΩ pF pF pF nH Remark To prevent bus floating To prevent bus floating fpp≦5MHz, 30 cards fpp≦20MHz, 10 cards fpp≦20MHz 4/8 64MB/128MB/256MB/512MB MultiMediaCardTM 3. Recommend Operating Conditions Parameter Supply voltage Inputs Low-level input current High-level input current Outputs High-level output current Low-level output current Clock Clock frequency data transfer mode (pp) Input clk Clock frequency ident. Mode (od) Clock cycle time data transfer mode (pp) Clock cycle time ident. Mode (od) Clock low time Clock high time Clock input rise time Clock input fall time Clock low time Clock high time Clock input rise time Clock input fall time Tpp = 1/fpp tOD = 1/fOD tWL tWH tLH tHL tWL tWH tLH tHL 50 50 50 50 10 10 10 10 ns ns ns ns ns mA mA MHz CL