The CompactFlash (CF) card SST48CFxxx supports threeoperational modes: (1) PC card ATA using I/O mode, (2)PC card ATA using Memory mode, and (3) TrueIDE mode.Individual application notes have been generated that providereference designs for an SST FlashFlex51 MCU tocontrol a CF card operating in each of its three operationalmodes. This application note introduces the hardware andfirmware reference design for the SST89C54/581 (8051-compatible microcontroller) to control the CompactFlashcard SST48CFxxx2 in TrueIDE mode.
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