The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 2007
Filed:
Oct. 28, 2004
Techniques for providing increased flexibility to input/output banks with respect to supply voltages
Andy Lee, San Jose, CA (US);
Toan Nguyen, San Francisco, CA (US);
Stephanie Tran, San Jose, CA (US);
Cameron Mcclintock, Mountain View, CA (US);
Brian Johnson, Bellevue, WA (US);
Andy Lee, San Jose, CA (US);
Toan Nguyen, San Francisco, CA (US);
Stephanie Tran, San Jose, CA (US);
Cameron McClintock, Mountain View, CA (US);
Brian Johnson, Bellevue, WA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Techniques are provided for increasing flexibility to I/O banks with respect to supply voltages. Multiple supply voltages can be provided to a bank of I/O pins. Separate I/O pins residing in an I/O bank are driven by buffers that are coupled to different supply voltages. Dedicated I/O pins are driven by buffers with pre-selected supply voltages. The dedicated I/O pins can be grouped together into the same I/O bank providing greater flexibility to drive signals on I/O pins in other I/O banks at different voltages. Also, a dual mode input buffer can drive an input signal to a voltage determined by one of two possible supply voltage levels. In addition, power on reset circuits for an I/O bank can monitor the voltage of two or more supply voltages.