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AR# 37667 Virtex-6 FPGA -1L Industrial Grade Vccint Specification Change

Description


On July 30, 2010, prior to the production release of the Virtex-6 FPGA -1L FPGA, the specification for VCCINT on -1L for Industrial grade changed from 0.9V to 0.94 nominal. The minimum and maximum specifications are copied into the tables below; however, please refer to the Virtex-6 FPGA Data Sheet: DC and Switching Characteristics, v2.8 (or later) (DS152) for official specifications:
http://www.xilinx.com/support/documentation/data_sheets/ds152.pdf


Table 1: Original -1L I-Grade Specification
Symbol Description Min Max Unit
Vccint Internal supply voltage relative to GND, Tj = 0C to +85C V 0.95 1.05 V
For -1L devices: internal supply voltage relative to GND, Tj = 0C to +85C 0.87 0.93V


Table 2: New -1L I-Grade Specification
Symbol Description Min Max Unit
Vccint Internal supply voltage relative to GND, Tj = 0C to +85C V 0.95 1.05 V
For -1L C-grade: internal supply voltage relative to GND, Tj = 0C to +85C 0.87 0.93V
For -1L I-grade: internal supply voltage relative to GND, Tj = -40C to +100C 0.91 0.97 V

Solution

Due to the changes in the specification, designers need to adjust their power supplies to accommodate the new specification. The power estimation tools will reflect these changes in ISE 12.3 software for the Xilinx Power Estimator (XPE), and ISE 12.4 software for the Xilinx Power Analyzer (XPA). Until those versions are released, designers can manually enter the new nominal voltage into the tools.

Actions

AR# 37667
Date Created 08/27/2010
Last Updated 08/30/2010
Status Active
Type
Devices
  • Virtex-6 HXT
  • Virtex-6 LX
  • Virtex-6 LXT
  • Virtex-6 SXT
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