CE-ATA
Introduction '''Consumer Electronics ATA (CE-ATA)''' is an interface standard for the connection of storage devices and hosts in consumer electronic device such as mobile and handheld devices. One of the primary goals is to standardize connections for small form factor hard disk drives such as 1-inch Microdrives.The standard is maintained by  CE-ATA Workgroup.
History The CE-ATA Specification was developed in 2005.
Interface === MMC ===CE-ATA is electrically and physically compatible with MMC specification. CE-ATA uses MMC connector on host devices and matching flex cable or circuit connection on CE-ATA hard disk drives.=== Pin Assignment === Pin # Signal - x4 Data Lines Signal - x8 Data Lines 1  Vss  Vss 2  DAT2  DAT2 3  DAT3  DAT3 4  Supply Voltage  Vss 5  CMD  DAT4 6  Interface Voltage  DAT5 7  CLK  Supply Voltage 8  Vss  CMD 9  DAT0  Interface Voltage 10  DAT1  CLK 11  Vss  Vss 12  Reserved  DAT6 13  (Not Used)  DAT7 14  (Not Used)  Vss 15  (Not Used)  DAT0 16  (Not Used)  DAT1 17  (Not Used)  Vss 18  (Not Used)  Reserved
See also *AT Attachment (ATA)*MMC
External links * CE-ATA Workgroup * CE-ATA Digital Protocol Specification Revision 1.1 * MultiMediaCard Association