R
DC and Switching Characteristics
Power Supply Specifications
Table 74: Supply Voltage Thresholds for Power-On Reset
Symbol
Description
Min
0.4
0.8
0.4
Max
1.0
Units
V
Threshold for the V
Threshold for the V
Threshold for the V
supply
supply
V
V
V
CCINTT
CCINT
V
2.0
1.0
CCAUXT
CCAUX
V
Bank 2 supply
CCO
CCO2T
Notes:
1.
V
, V
, and V
supplies to the FPGA can be applied in any order. However, the FPGA’s configuration source (Platform Flash,
CCO
CCINT CCAUX
SPI Flash, parallel NOR Flash, microcontroller) might have specific requirements. Check the data sheet for the attached configuration
source. In Step 0 devices using the HSWAP internal pull-up, V must be applied before V
.
CCAUX
CCINT
2. To ensure successful power-on, V
no dips at any point.
, V
Bank 2, and V
supplies must rise through their respective threshold-voltage ranges with
CCINT CCO
CCAUX
Table 75: Supply Voltage Ramp Rate
Symbol
Description
Min
0.2
0.2
0.2
Max
50
Units
ms
V
Ramp rate from GND to valid V
Ramp rate from GND to valid V
Ramp rate from GND to valid V
supply level
supply level
CCINTR
CCINT
V
50
ms
CCAUXR
CCAUX
V
Bank 2 supply level
CCO
50
ms
CCO2R
Notes:
1.
V
, V
, and V
supplies to the FPGA can be applied in any order. However, the FPGA’s configuration source (Platform Flash,
CCO
CCINT CCAUX
SPI Flash, parallel NOR Flash, microcontroller) might have specific requirements. Check the data sheet for the attached configuration
source. In Step 0 devices using the HSWAP internal pull-up, V must be applied before V
.
CCAUX
CCINT
2. To ensure successful power-on, V
no dips at any point.
, V
Bank 2, and V
supplies must rise through their respective threshold-voltage ranges with
CCINT CCO
CCAUX
Table 76: Supply Voltage Levels Necessary for Preserving RAM Contents
Symbol Description
level required to retain RAM data
Min
1.0
2.0
Units
V
V
V
V
V
DRINT
CCINT
V
level required to retain RAM data
DRAUX
CCAUX
Notes:
1. RAM contents include configuration data.
118
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DS312-3 (v3.8) August 26, 2009
Product Specification
XILINX [ XILINX, INC ]
