
Spartan-3 FPGA Family: DC and Switching Characteristics
4
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DS099-3 (v1.5) December 17, 2004
Advance Product Specification
R
Table 5:
General Recommended Operating Conditions
Symbol
Description
Min
Nom
Max
Units
T
J
Junction temperature
Commercial
0
-
85
°
C
Industrial
–40
-
100
°
C
V
CCINT
V
CCO(1)
V
CCAUX(2)
Internal supply voltage
1.140
1.200
1.260
V
Output driver supply voltage
1.140
-
3.450
V
Auxiliary supply voltage
2.375
2.500
2.625
V
Notes:
1.
The V
range given here spans the lowest and highest operating voltages of all supported I/O standards. The recommended
V
range specific to each of the single-ended I/O standards is given in
Table 8
, and that specific to the differential standards is
given in
Table 10
.
Only during DCM operation, it is recommended that the rate of change of V
CCAUX
not exceed 10 mV/ms.
2.
Table 6:
General DC Characteristics of User I/O, Dual-Purpose, and Dedicated Pins
Device
Revision
I
L(2)
Leakage current at User
I/O, Dual-Purpose, and
Dedicated pins
Future
Symbol
Description
Test Conditions
Min
Typ
Max
Units
μ
A
μ
A
μ
A
0
Driver is in a
high-impedance
state, V
IN
= 0V
or V
CCO
max,
sample-tested
V
CCO
> 3.0V
V
CCO
< 3.0V
All V
CCO
levels
–25
-
+25
–10
-
+10
–10
-
+10
I
RPU(3)
Current through pull-up
resistor at User I/O,
Dual-Purpose, and
Dedicated pins
All
V
IN
= 0V, V
CCO
= 3.3V
V
IN
= 0V, V
CCO
= 3.0V
V
IN
= 0V, V
CCO
= 2.5V
V
IN
= 0V, V
CCO
= 1.8V
V
IN
= 0V, V
CCO
= 1.5V
V
IN
= 0V, V
CCO
= 1.2V
V
IN
= V
CCO
–0.84
-
–2.35
mA
–0.69
-
–1.99
mA
–0.47
-
–1.41
mA
–0.21
-
–0.69
mA
–0.13
-
–0.43
mA
–0.06
-
–0.22
mA
I
RPD(3)
Current through
pull-down resistor at
User I/O, Dual-Purpose,
and Dedicated pins
All
0.37
-
1.67
mA
I
REF
V
REF
current per pin
0
V
CCO
> 3.0V
V
CCO
< 3.0V
All V
CCO
levels
–25
-
+25
μ
A
μ
A
μ
A
pF
–10
-
+10
Future
–10
-
+10
C
IN
Input capacitance
All
3
-
10
Notes:
1.
2.
The numbers in this table are based on the conditions set forth in
Table 5
.
The I
L
specification applies to every I/O pin throughout power-on as long as the voltage on that pin stays between the absolute V
IN
minimum 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
CCO
power. Also consider applying V
CCO
power before the connection of data lines occurs. When
the FPGA is completely unpowered, the impedance at the I/O pins is high.
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
.
Spartan-3 family values for both resistances are stronger than they have been for previous FPGA families.
3.