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Texas Instruments MSP430F541xA & MSP430F543xA Mixed-Signal MCUs

Texas Instruments MSP430F541xA and MSP430F543xA Mixed-Signal Microcontrollers consist of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with extensive low-power modes, is optimized to deliver extended battery life in portable measurement applications. The microcontrollers feature a powerful 16-bit RISC CPU, 16-bit registers, and constant generators, contributing to maximum code efficiency. The digitally controlled oscillator (DCO) allows the device to wake up from low-power modes to active mode in 3.5µs (typical).

The TI MSP430F543xA and MSP430F541xA Mixed-Signal Microcontrollers have configurations with three 16-bit timers, a high-performance 12-bit ADC, up to four USCIs, a hardware multiplier, DMA, an RTC module with alarm capabilities, and up to 87 I/O pins.

Features

  • Low supply voltage range of 3.6V down to 1.8V
  • Ultra-low power consumption
    • Active mode (AM): all system clocks active 230µA/MHz at 8MHz, 3.0V, flash program execution (typical) 110µA/MHz at 8MHz, 3.0V, RAM program execution (typical)
    • Standby mode (LPM3): real-time clock (RTC) with crystal, watchdog, and supply supervisor operational, full RAM retention, fast wake-up of 1.7µA at 2.2V, 2.1µA at 3.0V (typical) low-power oscillator (VLO), general-purpose counter, watchdog, and supply supervisor operational,  full RAM retention, fast wake-up of 1.2µA at 3.0V (typical)
    • Off mode (LPM4): full RAM retention, supply supervisor operational, fast wake-up: 1.2µA at 3.0V (typical)
    • Shutdown mode (LPM4.5) of 0.1µA at 3.0V (typical)
  • Wake up from standby mode in 3.5µs (typical)
  • 16-bit RISC architecture
    • Extended memory
    • Up to 25MHz system clock
  • Flexible power-management system
    • Fully integrated LDO with programmable regulated core supply voltage
    • Supply voltage supervision, monitoring, and brownout
  • 16-bit timer TA0, Timer_A with five capture/compare registers
  • 16-bit timer TA1, Timer_A with three capture/compare registers
  • 16-bit timer TB0, Timer_B with seven capture/compare shadow registers
  • Unified clock system
    • FLL control loop for frequency stabilization
    • Low-power, low-frequency internal clock source (VLO)
    • Low-frequency trimmed internal reference source (REFO)
    • 32kHz crystals
    • High-frequency crystals up to 32MHz
  • Up to four universal serial communication interfaces (USCIs)
    • USCI_A0, USCI_A1, USCI_A2, and USCI_A3 each support:
      • Enhanced UART supports automatic baud rate detection
      • IrDA encoder and decoder
      • Synchronous SPI
    • USCI_B0, USCI_B1, USCI_B2, and USCI_B3 each support:
      • I2C
      • Synchronous SPI
  • 12-bit analog-to-digital converter (ADC)
    • Internal reference
    • Sample-and-hold
    • Autoscan feature
    • 14 external channels, two internal channels
  • Hardware multiplier supports 32-bit operations
  • Serial onboard programming, no external programming voltage needed
  • 3-channel internal DMA
  • Basic timer with RTC feature

Applications

  • Analog and digital sensor systems
  • Digital motor controls
  • Remote controls
  • Thermostats
  • Digital timers
  • Hand-held meters

Block Diagrams

Block Diagram - Texas Instruments MSP430F541xA & MSP430F543xA Mixed-Signal MCUs

Development Tools

Texas Instruments MSP-FET Flash Emulation Tool

Allows users to quickly begin application development on MSP low-power microcontrollers (MCU).

Learn Moreabout Texas Instruments MSP-FET Flash Emulation Tool View Productsrelated to Texas Instruments MSP-FET Flash Emulation Tool

Texas Instruments C-GANG Low-Cost Gang Programmer

Gang programmer can program up to six targets at once & is compatible with the MSPM0/MSP430 devices.

Learn Moreabout Texas Instruments C-GANG Low-Cost Gang Programmer View Productsrelated to Texas Instruments C-GANG Low-Cost Gang Programmer
Published: 2020-10-15 | Updated: 2025-04-16