AR# 40911

Spartan-6 What is the POR (Power on Reset) Threshold Voltage?

Description

The Spartan-6 FPGAData Sheet (DS162) does not specify a POR threshold voltage for the Spartan-6 devices, as previous Spartan families had. What are the equivalent specifications for power on reset threshold levels?

Solution

Spartan-6 FPGA does not have the same POR Threshold Voltage as the Spartan-3 families do.

For Spartan-6 FPGA, when powering on the device the minimum operating condition levels found in the data sheet for VCCINT, VCCAUX and VCCO can be used as the minimum POR threshold.

If programming @ 1.8v then the minimum VCCO2 spec must be met which is 1.65V.

Once the Spartan-6 device is powered the voltage must NOT drop below the VDRINT and VDRAUX minimum levels as specific in the Spartan-6 Data Sheet.

For queries on the Spartan-3 POR threshold levels please see(Xilinx Answer 19816).

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Linked Answer Records

Associated Answer Records

Answer Number	Answer Title	Version Found	Version Resolved
46791	Spartan-6 FPGA Design Assistant - Troubleshoot Common Fabric Problems	N/A	N/A

AR# 40911
Date	12/15/2012
Status	Active
Type	General Article
Devices	Spartan-6 LX Spartan-6 LXT Spartan-6Q

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