电子信息系外文文献翻译------混合信号微控制器MSP430F149.doc

Mixed Signal Microcontroller MSP430F149 Feature Low Supply-Voltage Range, 1.8 V to 3.6 VUltralow-Power Consumption:?? Active Mode: 280 μA at 1 MHz, 2.2V?? Standby Mode: 1.6 μA?? Off Mode (RAM Retention): 0.1 μAFive Power-Saving ModesWake-Up From Standby Mode in less than 6 μs16-Bit RISC Architecture, 125-ns Instruction Cycle Time12-Bit A/D Converter With Internal Reference, Sample-and-Hold and Autoscan Feature16-Bit Timer_A With Three Capture/Compare Registers On-Chip ComparatorSerial Onboard Programming, No External Programming Voltage Needed Programmable?Code Protection by Security FuseSerial Communication Interface (USART), Functions as Asynchronous UART or?Synchronous SPI Interface?? Two USARTs (USART0, USART1)Family Members Include:?? MSP430F147, MSP430F1471:32KB+256B Flash Memory,1KB RAM?? MSP430F148, MSP430F1481:48KB+256B Flash Memory,2KB RAM?? MSP430F149, MSP430F1491:60KB+256B Flash Memory,2KB RAMAvailable in 64-Pin Quad Flat Pack (QFP) 2. Description ?The Texas Instruments MSP430 family of ultralow-power microcontrollers consist of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low power modes is optimized to achieve extended battery life in portable measurement applications. The device featuresa powerful 16-bit RISC CPU, 16-bit registers, and constant generators that attribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than6 μs.?The MSP430x13x and the MSP430x14x(1) series are microcontroller configurations with two built-in 16-bit timers, a fast 12-bit A/D converter (not implemented on the MSP430F14x1 devices), one or two universal serial synchronous/asynchronous communication interfaces (USART), and 48 I/O pins.?Typical applications include sensor systems that capture analog signals, convert them to digital values, and process and transmit the data to a host syste