SMCXXXAF Datasheet, PDF (10/82 Pages) Numonyx B.V – 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash™ card

Description
1
Description
SMCxxxAF
The CompactFlash is a small form factor non-volatile memory card which provides high
capacity data storage. Its aim is to capture, retain and transport data, audio and images,
facilitating the transfer of all types of digital information between a large variety of digital
systems.
The card operates in three basic modes,
● PCMCIA I/O mode
● PCMCIA memory mode
● True IDE mode
It conforms to the PC card specification when operating in the PCMCIA I/O mode and
PCMCIA memory mode (Personal Computer Memory Card International Association
standard, JEIDA in Japan) and to the ATA specification when operating in True IDE mode.
CompactFlash cards can be used with passive adapters in a PC-card type II or type III
socket.
The card has an internal intelligent controller which manages interface protocols, data
storage and retrieval as well as error correcting code (ECC), defect handling, diagnostics
and clock control. Once the card has been configured by the host, it behaves as a standard
ATA (IDE) disk drive.
The card has a super cap on V_CC and a powerful power-loss management feature to
prevent data corruption after power-down.
The specification has been realized and approved by the CompactFlash association (CFA).
This non-proprietary specification enables users to develop CF products that function
correctly and are compatible with future CF design.
The system highlights are shown in Table 2, Table 3, Table 4, Table 5, Table 6 and Table 7.
Related documentation
● PCMCIA PC card standard, 1995
● PCMCIA PC card ATA specification, 1995
● AT attachment interface document, American National Standards Institute, X3.221-
1994
● CF+ and CompactFlash specification revision 2.0.
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