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Re: Cheap SD Flash File System

2005-11-13 by Joel Winarske

As referenced from the SanDisk Secure Digital Card Product Manual,
version 1.9:

**Product Maximum Clock Speed and Burst Rate**

MultiMediaCard / Clock Speed / Burst Rate
SPI Bus mode 20 MHz 2.5 MB/s
MMC 1-bit mode 20 MHz 2.5 MB/s

SD Card / Clock Speed / Burst Rate
SPI Bus mode 25 MHz 3.125 MB/s
SD 1-bit mode 25 MHz 3.125 MB/s
SD 4-bit mode 25 MHz 12.5 MB/s


Joel

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