XC3S50A-4TQG144C Datasheet, PDF (15/132 Pages) Xilinx, Inc – Spartan-3A FPGA Family

DC and Switching Characteristics
Quiescent Current Requirements
Table 10: Quiescent Supply Current Characteristics
Symbol
Description
I_CCINTQ Quiescent V_CCINT supply current
I_CCOQ Quiescent V_CCO supply current
I_CCAUXQ Quiescent V_CCAUX supply current
Device
XC3S50A
XC3S200A
XC3S400A
XC3S700A
XC3S1400A
XC3S50A
XC3S200A
XC3S400A
XC3S700A
XC3S1400A
XC3S50A
XC3S200A
XC3S400A
XC3S700A
XC3S1400A
Typical⁽²⁾
2
7
10
13
24
0.2
0.2
0.3
0.3
0.3
3
5
5
6
10
Commercial
Maximum⁽²⁾
20
50
85
120
220
2
2
3
3
3
8
12
18
28
50
Industrial
Maximum⁽²⁾
30
70
125
185
310
3
3
4
4
4
10
15
24
34
58
Units
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Notes:
1. The numbers in this table are based on the conditions set forth in Table 8.
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_J of 25°C at V_CCINT = 1.2V, V_CCO = 3.3V, and V_CCAUX
= 2.5V). The maximum limits are tested for each device at the respective maximum specified junction temperature and at maximum voltage
limits with V_CCINT = 1.26V, V_CCO = 3.6V, and V_CCAUX = 3.6V. The FPGA is programmed with a “blank” configuration data file (that is, a design
with no functional elements instantiated). For conditions other than those described above (for example, a design including functional
elements), measured quiescent current levels will be different than the values in the table.
3. For more accurate estimates for a specific design, use the Xilinx XPower tools. There are two recommended ways to estimate the total power
consumption (quiescent plus dynamic) for a specific design: a) The Spartan-3A FPGA 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.
5. For information on the power-saving Suspend mode, see XAPP480: Using Suspend Mode in Spartan-3 Generation FPGAs. Suspend mode
typically saves 40% total power consumption compared to quiescent current.
DS529-3 (v2.0) August 19, 2010
www.xilinx.com
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