MMC 4.0.The MultiMediaCard System Specification

因为MMC后来与JEDEC合并，很多前MMC的标准和规范较难找到，分享给有需要的人。 The MultiMediaCard is an universal low cost data storage and communication media. It is designed to cover a wide area of applications as smart phones, cameras, organizers, PDAs, digital recorders, MP3 players, pagers, electronic toys, etc. Targeted features