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Transcend Information Inc.
V1.1
13
WP
(PC Card Memory Mode)
Write Protect
-IOIS16
(PC Card I/O Mode)
-IOCS16
(True IDE Mode)
O
24
Memory Mode – The CompactFlash Storage Card
does not have a write protect
switch. This signal is held low after the completion of the reset initialization
sequence.
I/O Operation – When the CompactFlash Storage Card is configured for I/O
Operation Pin 24 is used for the -I/O Selected is 16 Bit Port (-
IOIS16) function. A
Low signal indicates
that a 16 bit or odd byte only operation can be performed at
the addressed port.
In True IDE Mode this output signal is asserted low when this
device is expecting
a word data transfer cycle.
Electrical Specification
The following tables indicate all D.C. Characteristics for the CompactFlash Storage Card. Unless
otherwise stated, conditions are:
Vcc = 5V ±10%
Vcc = 3.3V ± 5%
Absolute Maximum Conditions
Input Power
Input Leakage Current
Input Characteristics
CompactFlash interface I/O at 5.0V
Parameter Symbol Min. Max. Unit Remark