R
DC and Switching Characteristics
Quiescent Current Requirements
Table 79: Quiescent Supply Current Characteristics
Commercial
Maximum
Industrial
Maximum
(2)
(2)
(2)
Symbol
Description
Device
Typical
8
Units
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
I
Quiescent V
supply current XC3S100E
XC3S250E
27
36
CCINTQ
CCINT
15
78
104
145
324
457
1.5
XC3S500E
25
106
259
366
1.0
1.0
1.0
2.0
2.0
12
XC3S1200E
50
XC3S1600E
65
I
Quiescent V
supply current
XC3S100E
XC3S250E
XC3S500E
XC3S1200E
XC3S1600E
XC3S100E
XC3S250E
XC3S500E
XC3S1200E
XC3S1600E
0.8
0.8
0.8
1.5
1.5
8
CCOQ
CCO
1.5
1.5
2.5
2.5
I
Quiescent V
current
supply
13
CCAUXQ
CCAUX
12
22
26
18
31
34
35
52
59
45
76
86
Notes:
1. The numbers in this table are based on the conditions set forth in Table 77.
2. Quiescent supply current is measured with all I/O drivers in a high-impedance state and with all pull-up/pull-down resistors at the I/O pads
disabled. Typical values are characterized using typical devices at room temperature (T of 25°C at V = 1.2 V, V = 3.3V, and V
CCAUX
J
CCINT
CCO
= 2.5V). The maximum limits are tested for each device at the respective maximum specified junction temperature and at maximum voltage
limits with V = 1.26V, V = 3.465V, and V = 2.625V. The FPGA is programmed with a “blank” configuration data file (i.e., a
CCINT
CCO
CCAUX
design with no functional elements instantiated). For conditions other than those described above, (e.g., a design including functional
elements), measured quiescent current levels may be different than the values in the table. For more accurate estimates for a specific
design, use the Xilinx® XPower tools.
3. There are two recommended ways to estimate the total power consumption (quiescent plus dynamic) for a specific design: a) The
Spartan-3E XPower Estimator provides quick, approximate, typical estimates, and does not require a netlist of the design. b) XPower
Analyzer uses a netlist as input to provide maximum estimates as well as more accurate typical estimates.
4. The maximum numbers in this table indicate the minimum current each power rail requires in order for the FPGA to power-on successfully.
DS312-3 (v3.8) August 26, 2009
www.xilinx.com
121
Product Specification
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