R
XA Spartan-3A DSP Automotive FPGA Family Data Sheet
General DC Characteristics for I/O Pins
Table 9:
General DC Characteristics of User I/O, Dual-Purpose, and Dedicated Pins
Symbol
I
L
Description
Leakage current at User I/O,
Input-only, Dual-Purpose, and
Dedicated pins, FPGA powered
Test Conditions
Driver is in a high-impedance state,
V
IN
= 0V or V
CCO
max, sample-tested
Min
–10
Typ
-
Max
+10
Units
μA
I
HS
Leakage current on pins during All pins except INIT_B, PROG_B, DONE, and JTAG pins
hot socketing, FPGA unpowered when PUDC_B = 1.
INIT_B, PROG_B, DONE, and JTAG pins or other pins
when PUDC_B = 0.
–10
-
+10
μA
μA
μA
μA
μA
μA
μA
kΩ
kΩ
kΩ
kΩ
kΩ
μA
μA
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
μA
pF
Ω
Ω
Add I
HS
+ I
RPU
–151
–82
–36
–22
–11
5.1
6.2
8.4
10.8
15.3
167
100
5.5
4.1
3.0
2.7
2.4
7.9
5.9
4.2
3.6
3.0
–10
-
90
90
–315
–182
–88
–56
–31
11.4
14.8
21.6
28.4
41.1
346
225
10.4
7.8
5.7
5.1
4.5
16.0
12.0
8.5
7.2
6.0
-
-
100
110
–710
–437
–226
–148
–83
23.9
33.1
52.6
74.0
119.4
659
457
20.8
15.7
11.1
9.6
8.1
35.0
26.3
18.6
15.7
12.5
+10
10
115
–
I
RPU(2)
Current through pull-up resistor
at User I/O, Dual-Purpose, Input-
only, and Dedicated pins.
Dedicated pins are powered by
V
CCAUX
.
V
IN
= GND
V
CCO
or V
CCAUX
= 3.0V to 3.6V
V
CCO
or V
CCAUX
= 2.3V to 2.7V
V
CCO
= 1.7V to 1.9V
V
CCO
= 1.4V to 1.6V
V
CCO
= 1.14V to 1.26V
R
PU(2)
Equivalent pull-up resistor value
at User I/O, Dual-Purpose, Input-
only, and Dedicated pins (based
on I
RPU
per Note 2)
V
IN
= GND
V
CCO
= 3.0V to 3.6V
V
CCO
= 2.3V to 2.7V
V
CCO
= 1.7V to 1.9V
V
CCO
= 1.4V to 1.6V
V
CCO
= 1.14V to 1.26V
I
RPD(2)
Current through pull-down
resistor at User I/O, Dual-
Purpose, Input-only, and
Dedicated pins
Equivalent pull-down resistor
value at User I/O, Dual-Purpose,
Input-only, and Dedicated pins
(based on I
RPD
per Note 2)
V
IN
= V
CCO
V
CCAUX
= 3.0V to 3.6V
V
CCAUX
= 2.25V to 2.75V
R
PD(2)
V
CCAUX
= 3.0V to 3.6V
V
IN
= 3.0V to 3.6V
V
IN
= 2.3V to 2.7V
V
IN
= 1.7V to 1.9V
V
IN
= 1.4V to 1.6V
V
IN
= 1.14V to 1.26V
V
CCAUX
= 2.25V to 2.75V
V
IN
= 3.0V to 3.6V
V
IN
= 2.3V to 2.7V
V
IN
= 1.7V to 1.9V
V
IN
= 1.4V to 1.6V
V
IN
= 1.14V to 1.26V
I
REF
C
IN
R
DT
V
REF
current per pin
Input capacitance
Resistance of optional differential
termination circuit within a
differential I/O pair. Not available
on Input-only pairs.
All V
CCO
levels
-
V
CCO
= 3.3V ± 10%
V
CCO
= 2.5V ± 10%
LVDS_33, MINI_LVDS_33,
RSDS_33
LVDS_25, MINI_LVDS_25,
RSDS_25
Notes:
1.
2.
The numbers in this table are based on the conditions set forth in
This parameter is based on characterization. The pull-up resistance R
PU
= V
CCO
/I
RPU
. The pull-down resistance R
PD
= V
IN
/ I
RPD
.
DS705 (v1.1) January 20, 2009
Product Specification
9
XILINX [ XILINX, INC ]
