《移动信息工程导论》第8章微控制器简介.ppt

Introduction to Microcontrollers * So why is ultra-low power so important? The most apparent benefit for low-power is realized in battery powered applications allowing the use of smaller, lower cost batteries. Power supplies are simpler and lower cost, and in many applications direct battery supply can be used. Generated EMI is very low because the MSP430 is so low power and can operate effectively at low-frequencies. A benefit in battery powered applications is the idea of permanently installed batteries. By installing sealed batteries at the factory in an application such as meters, sports equipment or portable medical devices, the liability of replacement is eliminated. With reduced energy consumption and battery usage, the MSP430 is a “Green” device. Ultra-Low-Power decreases the strain on energy resources. By increasing the life of your batteries, there is a decrease in the disposal of these toxic components. With the ability to operate 1μA, products can operate from a single lithium battery for over 10-years. As I mentioned, the New Technologies is the most captivating subject matter within MSP430 training, because it takes innovative technologies and makes them easy to implement. This year, will have launched FRAM, a revolutionary non-volatile memory, an integrated RF radio, full speed USB, and energy harvesting systems. The next enabling technology we have added to MSP430 is USB. There are over 2B new USB devices manufactureed every year. Since USB has become so ubiquitous, there is a stronger demand for clever USB solutions. And, many MCU designers are being faced with the prospect of adding USB to their systems. So, in July of 2009, MSP430 launched several families of USB-based products. * They support full speed USB 2.0, not OTG or host. We designed them to be high flexibility. For example: Fully-configurable 2K data buffers that can be used as system RAM when USB module is disabled, in addition, Unused USB interface pins can function as