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:
Sep. 15, 2009
Filed:
Jan. 22, 2008
Thomas Youbok Lee, Chandler, AZ (US);
Jonathan Jackson, Chandler, AZ (US);
John Austin, Queen Creek, AZ (US);
Andrew Swaneck, Queen Creek, AZ (US);
Yann Johner, Preverenges, CH;
Thomas Youbok Lee, Chandler, AZ (US);
Jonathan Jackson, Chandler, AZ (US);
John Austin, Queen Creek, AZ (US);
Andrew Swaneck, Queen Creek, AZ (US);
Yann Johner, Preverenges, CH;
Microchip Technology Incorporated, Chandler, AZ (US);
Abstract
A mixed signal device, e.g., digital-to-analog converter (DAC) device has a serial interface communication protocol that accesses volatile and/or nonvolatile memory and allows a preprogrammed output voltage whenever the mixed signal device is powered-up. However, unlike conventional DAC devices, DAC devices with non-volatile memory may need special interface communication protocols for effective operation of the DAC device and communications between a system master controller unit (MCU). Interface communications protocols that do not violate standard serial bus communications protocols are provided for communicating between the volatile and non-volatile memories of the DAC device so that the MCU may access the DAC device's memories (non-volatile and/or volatile memories).