The characteristics of MSP430
MSP430 MCU can be incorporated into the world's lowest power consumption microprocessor series.
MSP430 provides 200 kinds of ultra low power microprocessor device. Each device has a clock system flexible, as many as 7 kinds of low power mode is enabled (LPM), which can improve the optimization performance. If matched with less than 1US of the instant wake-up time and interrupt sources, MSP430 can ensure the required your application only use manual tasks corresponding clock and peripherals.
The main characteristics of the MSP430 chip:
strong processing ability of
MSP430 Series MCU is a 16 bit single chip, using the reduced instruction set (RISC) structure, is addressing the rich (7 source operand addressing, 4 destination operand addressing), 27 kernel command and to simulate many instructions; a lot of register and the on-chip data memory may participate in many kinds of operations; and efficient look-up processing instruction. These features ensure can produce efficient program.
MSP430 Series MCU can drive 25MHz crystal, 40ns instruction cycle. 16 bit data width, 40ns instruction cycle and multi-function hardware multiplier (can realize the multiply-add) match, can achieve some algorithms of digital signal processing (such as FFT).
MSP430 microcontroller architecture diagram
ultra low power
MSP430 microcontroller has low power consumption, is because it has its one's own knack in the supply voltage to reduce the chip and flexible and controllable operation clock.
first, supply voltage of the MSP430 Series MCU is used in 1.8-3.6V voltage. Thus the running at 1MHz clock conditions, the current minimum chip will is about 165 ¦Ì A, RAM remains the lowest power consumption mode is only 0.1 ¦Ì
secondly, clock system design unique. There are two different clock system in the MSP430 series: the basic clock system, frequency locked loop (FLL and FLL+) clock system and DCO digital oscillator clock system. You can simply use a crystal oscillator (32768Hz), also can use two crystal oscillator. Production of CPU and the function required by the system clock system clock. And the clock can be in command control, open and close, so as to realize the control of the overall power consumption.
due to open the system function module, which uses different work mode, the power consumption of a chip is significantly different. There is a pattern of activity in the systems of the Communist Party of China (AM) and five low power mode (LPM0~LPM4). In the real-time clock mode, up to 2.5 ¦Ì A, in RAM mode, a minimum of 0.1 ¦Ì A.
on-chip resources of
MSP430 Series MCU series are integrated rich on-chip peripherals. They are the watchdog (WDT), A analog comparator, timer, A0 (Timer_A0) A1 (Timer_A1), timer, timer B0 (Timer_B0), UART, SPI, I2C, hardware multiplier, LCD driver, 10 /12 ADC, 16 bit sigma-delta ADC, DMA, I/O ports, timer (basic Basic Timer), a real-time clock (RTC) and different combinations of USB controller and other several peripheral module.
which, the watchdog can make the program out of control quickly reset; comparison, analog comparator voltage simulation with timer, you can design a A/D converter; 16 timer (Timer_A and Timer_B) with capture / compare function, a lot of capture / compare register, can be used in the event counting, timing, PWM; some devices are easier to be asynchronous, synchronous and multiple access serial communication interface can realize the application of multi computer communication and convenient; with more I/O ports, P0, P1, P2 port can receive external rising or falling interrupt input along; 10/12 hardware A/D converter with high conversion rate, the highest up to 200kbps, can satisfy most application data; can directly drive LCD up to 160; 12 D/A to achieve two-way conversion; hardware I2C serial bus interface is the existing reservoir serial expansion; and in order to increase the speed of data transmission, and using DMA module.
Provides the convenience of MSP430 series single-chip solutions. These on-chip system chip.
in addition, MSP430 Series MCU interrupt source is more, and can be arbitrarily nested, flexible and convenient use. When the low power state system in energy saving, interrupt only 5 ¦Ì s
Convenient and Efficient
MSP430 series devices with OPT type, FLASH type and ROM type three kinds, these devices to develop different means.
for OPT type and ROM type device is the use of simulator development after the success of burning or mask chip; there are very convenient development environment for FLASH, because the device on-chip JTAG debug interface, and can be electrically erasable FLASH memory, so the first download the program to FLASH, then the device the software control program run by the JTAG interface chip, read the information for the designers to use debug method for development. This method only needs one PC and one JTAG debugger, without the need of simulator and programmer. The development of language with assembly language and C language.