DS152 Datasheet, PDF (5/56 Pages) Xilinx, Inc – DC and Switching Characteristics

Virtex-6 FPGA Data Sheet: DC and Switching Characteristics
Power-On Power Supply Requirements
Xilinx FPGAs require a certain amount of supply current during power-on to insure proper device initialization. The actual
current consumed depends on the power-on ramp rate of the power supply.
Virtex-6 devices require a power-on sequence of V_CCINT, V_CCAUX, and V_CCO. If the requirement can not be met, then
V_CCAUX must always be powered prior to V_CCO. V_CCAUX and V_CCO can be powered by the same supply, therefore, both
V_CCAUX and V_CCO are permitted to ramp simultaneously. Similarly, for the power-down sequence, V_CCO must be powered
down prior to V_CCAUX or if power by the same supply, V_CCAUX and V_CCO power-down simultaneously.
Table 5 shows the minimum current, in addition to I_CCQ, that are required by Virtex-6 devices for proper power-on and
configuration. If the current minimums shown in Table 4 and Table 5 are met, the device powers on after all three supplies
have passed through their power-on reset threshold voltages. The FPGA must be configured after V_CCINT is applied.
Once initialized and configured, use the XPOWER tools to estimate current drain on these supplies.
Table 5: Power-On Current for Virtex-6 Devices
Device
I_CCINTMIN
Typ⁽¹⁾
XC6VLX75T
XC6VLX130T
XC6VLX195T
XC6VLX240T
XC6VLX365T
XC6VLX550T
XC6VLX760
XC6VSX315T
XC6VSX475T
XC6VHX250T
XC6VHX255T
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
See I_CCINTQ in Table 4
XC6VHX380T
XC6VHX565T
I_CCAUXMIN
Typ⁽¹⁾
I_CCAUXQ + 10
I_CCAUXQ + 10
I_CCAUXQ + 40
I_CCAUXQ + 40
I_CCAUXQ + 40
I_CCAUXQ + 40
I_CCAUXQ + 40
I_CCAUXQ + 40
I_CCAUXQ + 50
I_CCAUXQ + 40
I_CCOMIN
Typ⁽¹⁾
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
I_CCOQ + 30 mA per bank
Units
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Notes:
1. Typical values are specified at nominal voltage, 25°C.
2. Use the XPOWER™ Estimator (XPE) spreadsheet tool (download at http://www.xilinx.com/power) to calculate maximum power-on currents.
Table 6: Power Supply Ramp Time
Symbol
Description
V_CCINT
V_CCO
V_CCAUX
Internal supply voltage relative to GND
Output drivers supply voltage relative to GND
Auxiliary supply voltage relative to GND
Ramp Time
0.20 to 50.0
0.20 to 50.0
0.20 to 50.0
Units
ms
ms
ms
DS152 (v2.10) October18, 2010
www.xilinx.com
Advance Product Specification
5