AR# 17208

Spartan-3/-3E - Is there a power-on surge or power sequencing requirement for Spartan-3/-3E?

Description

Is there a power-on surge or power sequencing requirement for Spartan-3/-3E?

Solution

There are no power sequencing requirements for Spartan-3 12" production silicon. Please see the Spartan-3 Data Sheet for more information.

The latest Spartan-3 errata detail the power sequencing requirements for Spartan-3 8" silicon.

For more information on how to access the errata, see (Xilinx Answer 18815).

There are currently no known power sequencing requirements for Spartan-3E. Characterization is still being performed.

There is no power-on surge current requirement. The Spartan-3/-3E FPGAs take advantage of the latest design techniques to minimize power-on current. According to the Spartan-3/-3E Data Sheet, the maximum quiescent numbers indicate the minimum current each power rail requires for the FPGA to power-on successfully.

The Spartan-3 and Spartan-3E are still being fully characterized. Updated information is reflected in the DC and Switching Characteristics Data Sheet.

The Spartan-3 FPGA DC and Switching Characteristics Data Sheet can be found at:

http://www.xilinx.com/xlnx/xweb/xil_publications_display.jsp?category=/Data+Sheets/FPGA+Device+Families&iLanguageID=1

The Spartan-3E FPGA DC and Switching Characteristics Data Sheet can be found at:

http://www.support.xilinx.com/xlnx/xweb/xil_publications_display.jsp?sGlobalNavPick=&sSecondaryNavPick=&category=-1211389&iLanguageID=1

Other relevant references include the Spartan-3 Generation FPGA User Guide (UG331):

http://www.xilinx.com/support/documentation/user_guides/ug331.pdf

and the Spartan-3 Generation Configuration User Guide (UG332):

http://www.xilinx.com/support/documentation/user_guides/ug332.pdf

AR# 17208
Date 12/15/2012
Status Active
Type General Article