uMMC Overview

Overview

• Supports
  • MMC, SDC, SDHC, and SDXC card formats. (SDXC cards must be formatted as FAT32)
    • All available card formats are supported. From 8MB up to 2TB.
  • FAT12, FAT16 and FAT32.
  • Long file names.
  • SD, miniSD, and microSD form factors.
• TTL serial host connection from 2400 -> 460800 bps.
• Up to 4 file handles open simultaneously for reading and/or writing.
• Random reads/writes.
  • You can read from or write to anywhere in a file.
  • Seeking in a file allows for file pre-allocation, leading to faster write times.
• File truncation.
• Change file modification stamp.
• Change file attributes.
• Iterated file listings with wildcards.
  • You can iterate through a directory listing with wildcards.
• Direct file copy.
  • Copy data from one file to another directly.
• On-board Real-Time Clock (RTC).
  • Files created/modified have time stamps updated to current time. (Time must be set after power-up)
• Configuration on card.
  • Settings can be read from a configuration file on the card. (On power-up only)
• Chipset available for OEM integration. Single TQFP or QFN component.
• -40°C to +85°C operating temperature range.
• RoHS compliant.