Outline
MSP430 series MCU is Texas Instruments in 1996 to market a 16-bit ultra-low power mixed signal processor, the biggest bright spot to the people left low-power and fast, very flexible assembly language with them, many addressing modes, instruction rarely, easy to use. Mainly due to its practical application demand, the many analog circuits, digital circuits and microprocessors integrated on a chip, to provide a "single-chip" solution. Its rapid growth and expanding range of applications, depending on the following characteristics:
characteristic
1, processing power, reduced instruction set ( RISC ) architecture, has a wealth of addressing (seven kinds of source operand address, destination operand addressing four kinds), 27 simple instructions and a number of core analog command; a large number of registers and data memory chip can participate in a variety of computing; efficient table look-processing instructions; higher processing speed, at 8MHz crystal drive instruction cycle is 125ns. These features ensure the preparation of a high efficiency of the source.
2, the operation speed can be driven 8MHz crystal, to achieve a 125ns instruction cycle. 16-bit data width, and 125ns instruction cycle versatile hardware multiplier (to achieve multiply) cooperate to achieve some of the digital signal processing algorithms (e.g., FFT, etc.).
3, ultra-low power consumption, MSP430 microcontroller reason why low power consumption, because of its reduced chip supply voltage and a flexible and controllable operating clock has its own unique aspects. 1.8-3.6V power supply voltage used is a voltage. Thus it can be run under conditions of 1MHz clock, the current chip will be about 200-400uA, clock off mode, only the lowest power consumption 0.1uA
4, on-chip resource-rich
Shortcoming
1, personal feeling difficulty of use, not suitable for beginners, information is relatively small, only running after the network went.
2, accounting for the large instruction space, as is the 16-bit microcontroller, the program in units of words, some instructions actually occupy 6 bytes. While simple on the surface of the program, but the PI C microcontroller relatively large footprint.
3, a function of the device is not very complicated, but than the lowest bidder, with the single-chip solution in many areas of fully integrated solutions out of the field of application of the chip will be increasingly less.
Applications: low power consumption and ultra-low power industrial applications more applications.
The most used devices: MSP430F series, MSP430G2 series, MSP430L09 series
Reference Documents
1、http://www.ti.com.cn/tool/cn/CCSTUDIO
2, http://software-dl.ti.com/ccs/esd/documents/ccs_downloads.html