This document is a specification for MultiMediaCardTM. It includes the version history, ordering information, power consumption, operating characteristics, etc. This specification is applicable to Samsung Electronics' semiconductor flash memory products.
The Samsung MultiMediaCard specification describes a low‑cost, high‑performance flash memory card used in mobile phones, PDAs, cameras, and other portable devices. It details system features such as support for both standard MultiMediaCard and SPI communication modes, automatic sleep mode, hot‑insertion, and error‑management mechanisms.
The document lists product models ranging from 32 MB to 1 GB, outlines operating voltage (2.7 V–3.6 V), endurance (up to 1 million writes per sector), and bus capabilities (up to 64 k cards addressable, 10‑card data‑rate). It also defines error‑correction (ECC) and CRC schemes used to ensure data integrity.
| Capacity options | 32 MB – 1 GB |
|---|---|
| Operating voltage | 2.7 V to 3.6 V |
| Sector endurance | 1,000,000 writes per sector |
| Maximum addressable cards | Up to 64 k cards on the bus |
The MultiMediaCard operates between 2.7 V and 3.6 V.
Each sector is rated for up to 1 million write cycles.
Yes, the card supports an alternate SPI communication protocol in addition to standard MultiMediaCard mode.
Up to 30 cards can be stacked on a single physical bus, with each card having its own chip‑select signal.