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說明

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 and MSP430F541x 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.

特性

• Low Supply Voltage Range: 2.2 V to 3.6 V
• Ultralow Power Consumption
  • Active Mode (AM):
    All System Clocks Active
    312 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
    140 µA/MHz at 8 MHz, 3.0 V, RAM Program Execution (Typical)
  • Standby Mode (LPM3):
    Real-Time Clock With Crystal , Watchdog, and Supply Supervisor Operational,
    Full RAM Retention, Fast Wake-Up:
    2.6 µA at 3.0 V (Typical)
    Low-Power Oscillator (VLO), General-Purpose Counter, Watchdog,
    and Supply Supervisor Operational,
    Full RAM Retention, Fast Wake-Up:
    1.8 µA at 3.0 V (Typical)
  • Off Mode (LPM4):
    Full RAM Retention, Supply Supervisor Operational, Fast Wake-Up:
    1.69 µA at 3.0 V (Typical)
• Wake-Up From Standby Mode in Less Than 5 µs
• 16-Bit RISC Architecture
  • Extended Memory
  • Up to 18-MHz System Clock
• Flexible Power Management System
  • Fully Integrated LDO With Programmable Regulated Core Supply Voltage
  • Supply Voltage Supervision, Monitoring, and Brownout
• Unified Clock System
  • FLL Control Loop for Frequency Stabilization
  • Low-Power/Low-Frequency Internal Clock Source (VLO)
  • Low-Frequency Trimmed Internal Reference Source (REFO)
  • 32-kHz Crystals
  • High-Frequency Crystals up to 32 MHz
• 16-Bit Timer TA0, Timer_A With Five Capture/Compare Registers
• 16-Bit Timer TA1, Timer_A With Three Capture/Compare Registers