Stellaris(群星)單片機的片上FLASH編程(英)
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Stellaris(群星)單片機加上32KB串行SRAM(英)
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH LuminARy MICRO PRODUCTS. NO LICENSE,EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THISDOCUMENT. EXCEPT AS PROVIDED IN LuminARy MICRO’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS,LuminARy MICRO ASSUMES NO LIABILITY WHATSOEVER, AND LuminARy MICRO DISCLAIMS ANY EXPRESS OR IMPLIEDWARRANTY, RELATING TO SALE AND/OR USE OF LuminARy MICRO’S PRODUCTS INCLUDING LIABILITY OR WARRANTIESRELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHTOR OTHER INTELLECTUAL PROPERTY RIGHT. LuminARy MICRO’S PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL,LIFE SAVING, OR LIFE-SUSTAINING APPLICATIONS.
LuminARy Micro provides an analog-to-digital converter (ADC) module on some members of theStellaris microcontroller family. The hardware resolution of the ADC is 10 bits; however, due to noiseand other accuracy-diminishing factors, the true accuracy is less than 10 bits. This application noteprovides a software-based oversampling technique, resulting in an improved Effective Number OfBits (ENOB) in the conversion result. This document describes methods of oversampling an inputsignal, and the impact on precision and overall system performance.
LuminARy Micro Stellaris™ microcontrollers that are equipped with an analog-to-digital converter(ADC), use an innovative sequence-based sampling architecture designed to be extremely flexible,yet easy to use. This application note describes the sampling architecture of the ADC. Sinceprogrammers can configure Stellaris microcontrollers either through the powerful StellarisFamilyDriver Library or through direct writes to the device's control registers, this application note describesboth methods. The information presented in this document is intended to complement the ADCchapter of the device datasheet, and assumes the reader has a basic understanding of howADCsfunction.
