MultiMediaCard

Multi Media Card Flash memory memory card standard. Unveiled in 1997 by Siemens AG and SanDisk. Free documentation as opposed to SD-Card standard. Which sandisk.com doesn't follow anyway.

• the TRAXMOD shows how a ARM can play raw digital audio files streaming off of a FAT formatted MMC/SD Card.
• Prototyping Board for LPC2148 apparently connects a LPC2148 ARM processor directly to a SD/MMC card connector without any DOSonCHIP.
• the very small AVR_SD3 development board apparently connects an Atmel AVR directly to a SD/MMC socket without any DOSonCHIP.
• someone ranting about "It's a pet peeve of mine to have SD slots if there's no SD filesystem software. Of the hundreds of DEV boards that have a slot, only a couple have open software to utilize the slot. I'm not sure if the AVR world has this kind of open software?"
• "Embedded SD Card/MMC Card" includes a nice "Comparison of different types of MMC/SD cards", "Competing Formats", and a schematic and PCB for a "Embedded MMC/SD card reader board".
• Reading from SD card?
• the Balloon board apparently has a MMC socket connected to an ARM XScale processor
• "MMC/SD memory cards for Atmel AVR" "This project allows Atmel AVR microcontrollers to read and write ... Multi Media Cards (MMC) and Secure Digital Cards (SD) ... The file system is PC compatible, so that data can be transferred between the two."
• "Atmel AT91SAM9261 Evaluation Kit" with ARM9 (ATMEL AT91SAM9261) connected to MMC/SD socket, and Compact Flash socket
• the "MMC2IEC device": yet another Atmel AVR to SD/MMC card socket. Supports FAT16 and FAT32 support. Oh, and it can also connect to a C64, emulating a Commodore 1541 disk drive.
• ARM7X Development Board includes a MMC/SD socket.
• connecting a JuiceBox to a SD card (also eLinuxWiki:JuiceBoxMMCHack, eLinuxWiki:JuiceBoxUMDCart)
• yet another ARM9 on a credit-card-sized motherboard that includes a SD card slot (and runs uClinux)
• Polyceph Mk.I has complete source code and schematic and PCB files in EAGLE format. Shows how several (?) different processors connect to a SD/MMC card slot
• Evaluation Board for MSP430FG4619 connects that processor to a SD/MMC card connector
• "USB2.0 reference project" "a USB2.0 Card Reader. It support cards such as Compactflash, Memory Stick, Memory Stick Duo, Magic Gate, Secure Digital, MultimediaCard and SmartMedia. The schematic and source code of the reference projects are provided."
• "AVR based USB SD card reader"
• Dosonchip

FIXME: consider making this page about "how to interface a microcontroller to a SD/MMC card"?