Interface Description SanDisk CompactFlash Card OEM Product Manual
Table 3-4 Signal Description
Signal Name Dir. Pin Description
-IOIS16
(PC Card I/O Mode)
-IOCS16
(True IDE Mode)
I/O Operation–When the 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.
This output signal is asserted low when this
device is expecting a word data transfer cycle.
3.3 Electrical Specification
All D.C. Characteristics for the CompactFlash Memory Card Series are defined as follows:
Typical conditions unless otherwise stated:
V
CC
= 5V +/- 10%
V
CC
= 3.3V +/- 5%
Ta = 0
°
C to 60
°
C
Absolute Maximum conditions:
V
CC
= -0.3V min. to 6.5V max.
V* = 0.5V min. to V
CC
+ 0.5V max.
*Voltage on any pin except V
CC
with respect to GND.
3.3.1 Input Leakage Control and Input Characteristics
In Table 3-5, “x” refers to the characteristics described in Table 3-6. For example–"I1U"
indicates a pull-up resistor with a Type 1 input characteristic.
Table 3-5 Input Leakage Control
Type Parameter Symbol Conditions MIN MAX Unit
lxZ Input Leakage Current IL Vih=VCC/Vil=GND -1 1 uA
IxU Pull Up Resistor RPU1 VCC=5.0V 50k 500k Ohm
IxD Pull Down Resistor RPD1 VCC=5.0V 50k 500k Ohm
NOTE: The minimum pull-up resistor leakage current meets the PCMCIA
specification of 10k ohms but is intentionally higher in the
CompactFlash Memory Card Series product to reduce power use.
02/07, Rev. 12.0 3-8 © 2007 SanDisk Corporation
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