CompactFlash Memory Card Product Manual
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION 21
4.0 CompactFlash Memory Card Interface
Description
4.1 Physical Description
The host is connected to the CompactFlash
Memory Card using a standard 50 pin connector
consisting of two rows of 25 female contacts each on
50 mil (1.27 mm) centers.
4.1.1 Pin Assignments and Pin Type
The signal/pin assignments are listed in Table 4-1.
Low active signals have a “-” prefix. Pin types are
Input, Output or Input/Output. Table 4-2 defines
the DC characteristics for all input and output
type structures.
4.2 Electrical Description
The CompactFlash Memory Card Series is
optimized for operation with hosts which support
the PCMCIA I/O interface standard conforming to
the PC Card ATA specification. However, the
CompactFlash Card may also be configured to
operate in systems that support only the memory
interface standard. The configuration of the
CompactFlash Card will be controlled using the
standard PCMCIA configuration registers starting
at address 200h in the Attribute Memory space of
the CompactFlash Memory Card.
Table 4-2 describes the I/O signals. Signals whose
source is the host are designated as inputs while
signals that the CompactFlash Memory Card
sources are outputs. The CompactFlash Card logic
levels conform to those specified in the PCMCIA
Release 2.1 specification. Refer to section 4.3 for
definitions of Input and Output type.
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