Xilinx DS610 manual Power Supply Specifications, DC and Switching Characteristics

DC and Switching Characteristics

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Power Supply Specifications

Table 4: Supply Voltage Thresholds for Power-On Reset

Symbol	Description	Min	Max	Units
VCCINTT	Threshold for the VCCINT supply	0.4	1.0	V
VCCAUXT	Threshold for the VCCAUX supply	0.8	2.0	V
VCCO2T	Threshold for the VCCO Bank 2 supply	0.8	2.0	V

Notes:

1.VCCINT, VCCAUX, and VCCO supplies to the FPGA can be applied in any order. However, the FPGA’s configuration source (Platform Flash, SPI Flash, parallel NOR Flash, microcontroller) might have specific requirements. Check the data sheet for the attached configuration

source. Apply VCCINT last for lowest overall power consumption (see the UG331 chapter titled "Powering Spartan-3 Generation FPGAs" for more information).

2.To ensure successful power-on, VCCINT, VCCO Bank 2, and VCCAUX supplies must rise through their respective threshold-voltage ranges with no dips at any point.

Table 5: Supply Voltage Ramp Rate

Symbol	Description	Min	Max	Units
VCCINTR	Ramp rate from GND to valid VCCINT supply level	0.2	100	ms
VCCAUXR	Ramp rate from GND to valid VCCAUX supply level	0.2	100	ms
VCCO2R	Ramp rate from GND to valid VCCO Bank 2 supply level	0.2	100	ms

Notes:

1.VCCINT, VCCAUX, and VCCO supplies to the FPGA can be applied in any order. However, the FPGA’s configuration source (Platform Flash, SPI Flash, parallel NOR Flash, microcontroller) might have specific requirements. Check the data sheet for the attached configuration

source. Apply VCCINT last for lowest overall power consumption (see the UG331 chapter titled "Powering Spartan-3 Generation FPGAs" for more information).

2.To ensure successful power-on, VCCINT, VCCO Bank 2, and VCCAUX supplies must rise through their respective threshold-voltage ranges with no dips at any point.

Table	6: Supply Voltage Levels Necessary for Preserving CMOS Configuration Latch (CCL) Contents and RAM
Data
Symbol				Description				Min	Units
	VDRINT	VCCINT level required to retain CMOS Configuration Latch (CCL) and RAM data						1.0	V
VDRAUX		VCCAUX level required to retain CMOS Configuration Latch (CCL) and RAM data						2.0	V
General Recommended Operating Conditions
Table	7: General Recommended Operating Conditions
	Symbol		Description			Min	Nominal	Max	Units
	TJ		Junction temperature		Commercial	0	-	85	°C
					Industrial	–40	-	100	°C
	VCCINT		Internal supply voltage			1.140	1.200	1.260	V
	VCCO (1)		Output driver supply voltage			1.100	-	3.600	V
	VCCAUX		Auxiliary supply voltage		VCCAUX = 2.5	2.250	2.500	2.750	V
					VCCAUX = 3.3	3.000	3.300	3.600	V
	TIN		Input signal transition time(2)			-	-	500	ns

Notes:

1.This VCCO range spans the lowest and highest operating voltages for all supported I/O standards. Table 10 lists the recommended VCCO range specific to each of the single-ended I/O standards, and Table 12 lists that specific to the differential standards.

2.Measured between 10% and 90% VCCO.

12	www.xilinx.com	DS610-3 (v2.0) July 16, 2007
		Product Specification