R
DC and Switching Characteristics
Table 5: General DC Characteristics of User I/O, Dual-Purpose, and Dedicated Pins
Symbol
Description
Test Conditions
Min
Typ
Max Units
(2)
IL
Leakage current at User I/O,
Dual-Purpose, and Dedicated pins
Driver is in a high-impedance state,
VIN = 0V or VCCO max, sample-tested
–10
-
+10
µA
(3)
IRPU
Current through pull-up resistor at
User I/O, Dual-Purpose, and
Dedicated pins
V
V
V
IN = 0V, VCCO = 3.3V
IN = 0V, VCCO = 3.0V
IN = 0V, VCCO = 2.5V
mA
mA
mA
mA
mA
mA
mA
VIN = 0V, VCCO = 1.8V
V
V
IN = 0V, VCCO = 1.5V
IN = 0V, VCCO = 1.2V
(3)
IRPD
Current through pull-down resistor at
User I/O, Dual-Purpose, and
Dedicated pins
VIN = VCCO
IREF
CIN
VREF current per pin
Input capacitance
All VCCO levels
–10
3
-
-
+10
10
µA
pF
Notes:
1. The numbers in this table are based on the conditions set forth in Table 4.
2. The I specification applies to every I/O pin throughout power-on as long as the voltage on that pin stays between the absolute V minimum
L
IN
and maximum values (Table 1). For hot-swap applications, at the time of card connection, be sure to keep all I/O voltages within this range
before applying V power. Also consider applying V power before the connection of data lines occurs. When the FPGA is completely
CCO
CCO
unpowered, the impedance at the I/O pins is high.
3. This parameter is based on characterization. The pull-up resistance R = V
/ I
. The pull-down resistance R = V / I
.
PU
CCO RPU
PD
IN RPD
DS312-3 (v1.0) March 1, 2005
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Advance Product Specification
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