TI MSP430F543x超低功耗开发方案

TI MSP430F543x超低功耗开发方案
关键词:MCU, 超低功耗, MSP430, RISC CPU,DMA,

TI公司的MSP430F543x系列是超低功耗微控制器,每个器件有不同的外设,以适应不同的应用. MSP430F543x系列具有功能强大的16位RISC CPU,16位寄存器和能提供最大代码效率的常数发生器. MSP430F543x(A) 和MSP430F541x(A)系列能配置成三个16位计时器,高性能16位ADC和多达4个通用串行通信接口(USCI),硬件乘法器,DMA,带告警功能的实时时钟模块以及多达87个I/O引脚.该系列广泛应用在模拟和数字传感器系统,数字马达控制,遥控,自动调温设备,数字计时器以及手持测量仪表等.本文介绍MSP430F543x的主要性能,方框图以及MSP430F543x 100引脚目标板MSP-TS430PZ5X100的主要性能及电路图和.MSP-FET430UIF USB接口模块电路图.
The Texas Instruments MSP430 family of ultralow-power microcontrollers consists 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 features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency.
The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 5 μs. The MSP430F543x(A) and MSP430F541x(A) series are microcontroller configurations with three 16-bit timers, a high performance 12-bit analog-to-digital (A/D) converter, up to four universal serial communication interfaces (USCI), hardware multiplier, DMA, real time clock module with alarm capabilities, and up to 87 I/O pins.
Typical applications for this device include analog and digital sensor systems, digital motor control, remote controls, thermostats, digital timers, hand-held meters, etc.
The MSP430X CPU incorporates features specifically designed for modern programming techniques such as calculated branching, table processing and the use of high-level languages such as C. The MSP430X CPU can address a 1-MB address range without paging. The MSP430X CPU is completely backwards compatible with the MSP430 CPU.
The MSP430X CPU features include:
• RISC architecture
• Orthogonal architecture
• Full register access including program counter, status register and stack pointer
• Single-cycle register operations
• Large register file reduces fetches to memory.
• 20-bit address bus allows direct access and branching throughout the entire memory range without paging.
• 16-bit data bus allows direct manipulation of word-wide arguments.
• Constant generator provides the six most often used immediate values and reduces code size.
• Direct memory-to-memory transfers without intermediate register holding.
• Byte, word, and 20-bit address-word addressing
图1. MSP430F543x方框图
MSP430F543x主要特性: