CompactFlash (CF) is a standardized format first introduced in 1994 and the specification of which is managed by the CompactFlash Association. The standard specification defines a 50-pin physical interface and a PCMCIA ATA protocol interface to the host system. Because it has been so widely deployed since its introduction, CompactFlash has become a widely used name to denote the ATA solution. Originally designed for data storage in portable electronic devices, CompactFlash has come as far as hard drive replacements with capacities of 32GB. Its flexible ATA interface is compatible with most popular transfer modes including Ultra DMA, Multiword DMA, and PIO and supports PC Card Memory, PC Card I/O and True IDE modes. This flexibility makes CompactFlash an ideal option for replacing traditional IDE hard disk drives, especially in space-constrained environments.
