MSP430 microcontroller

MSP430 MCU Introduction:

MSP430 series of microcontrollers is the United States Texas Instruments (TI) in 1996 began to market a 16-bit ultra-low

MSP430 microcontroller
MSP430 Microcontroller [1] Power Consumption, Mixed Signal Processor with Reduced Instruction Set (RISC). Called the mixed-signal processor, is due to its practical application requirements, the number of different functions of analog circuits, digital circuit modules and microprocessors on a single chip to provide "single-chip" solution. This series of microcontrollers and more need to be used in battery-powered portable instrumentation.

MSP microcontroller features:

Strong handling capacity

The MSP430 family of microcontrollers is a 16-bit microcontroller that employs a Reduced Instruction Set (RISC) architecture, rich addressing schemes (seven source operand addressing, four destination operand addressing), and a concise 27-core instruction As well as a large number of analog instructions; a large number of registers and on-chip data memory can participate in a variety of computing; These features ensure the preparation of high-efficiency source code.

Computation speed

MSP430 series of microcontrollers in the 25MHz crystal drive, to achieve 40ns instruction cycle. 16-bit data width, 40ns instruction cycle, and multi-functional hardware multiplier (multiply-and-accumulate operations) can be combined to achieve certain digital signal processing algorithms (such as FFT, etc.).

Ultra-low power consumption

The reason why the MSP430 microcontroller has ultra-low power consumption is because it has its unique features in reducing the chip's power supply voltage and flexible and controllable operating clock.

First of all, MSP430 series microcontroller power supply voltage is 1.8-3.6V voltage. This allows it to operate at 1MHz clock with a chip current as low as 165μA and a minimum of 0.1μA in RAM hold mode.

Second, the unique clock system design. There are two different clocking systems in the MSP430 family: the basic clocking system, the frequency-locked loop (FLL and FLL +) clocking system, and the DCO digital oscillator clocking system. It is possible to use only one crystal oscillator (32.768kHz), DT-26 OR DT-38 [4], or two crystal oscillators. The system clock system generates CPU and clocks for each function. And these clocks can be opened and closed under the control of the order, thus realize the control of overall power consumption.

Due to the different functional modules that are enabled when the system is running, ie different working modes are used, the power consumption of the chip is significantly different. There is one active mode (AM) and five low power modes (LPM0 ~ LPM4) in the system. Up to 2.5μA in real-time clock mode and up to 0.1μA in RAM-hold mode.

Relevant MSP430 series products

Author：Brittany Antonia （The author of article owns the copyright.）