AR# 5133

Description

For Virtex, do any issues exist regarding the order in which you power up the different voltage supplies?

NOTE: For information on Virtex-E power sequencing, please see (Xilinx Answer 10129).

Solution

There are no restrictions on the order of VCCO, VCCINT, and VIN power applications. For more information, please see the Virtex Data Sheet -> Module 3 Electrical Characteristics -> DC Characteristics:
http://www.xilinx.com/support/documentation/data_sheets/ds003.pdf

Device lifetime information is provided in the Quality and Reliability report:
http://www.xilinx.com/support/documentation/user_guides/ug116.pdf
(Check the Quarterly report for Device Hour.)

If, after power-up, the VCCINT is lost, the I/Os will go into a 3-state condition and return to their pre-configuration state. If VCCO is lost to Banks 2 and 3, the device will also lose its configuration.