MSP430F5438AIZCAR

The TI MSP family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with extensive 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 the device to wake up from low-power modes to active mode in 3.5 µs (typical). The MSP430F543xA and MSP430F541xA series are microcontroller 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.

Applications

• Analog and Digital Sensor Systems
• Digital Motor Controls
• Remote Controls
• Thermostats
• Digital Timers
• Hand-Held Meters

Key features

• Low supply voltage range: 3.6 V down to 1.8 V
• Ultra-low power consumption
• Active mode (AM): all system clocks active 230 μA/MHz at 8 MHz, 3.0 V, flash program execution (typical)
• 110 μA/MHz at 8 MHz, 3.0 V, RAM program execution (typical)
• Standby mode (LPM3): real-time clock (RTC) with crystal, watchdog, and supply supervisor operational, full RAM retention, fast wakeup: 1.7 μA at 2.2 V, 2.1 μA at 3.0 V (typical)
• low-power oscillator (VLO), general-purpose counter, watchdog, and supply supervisor operational, full RAM retention, fast wakeup: 1.2 μA at 3.0 V (typical)
• Off mode (LPM4): full RAM retention, supply supervisor operational, fast wakeup: 1.2 μA at 3.0 V (typical)
• Shutdown mode (LPM4.5): 0.1 μA at 3.0 V (typical)
• Wake up from standby mode in 3.5 µs (typical)
• 16-bit RISC architecture
• Extended memory
• Up to 25-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
• 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
• Up to four universal serial communication interfaces (USCIs)
• USCI_A0, USCI_A1, USCI_A2, and USCI_A3 each support:
• Enhanced UART supports automatic baudrate 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, 2 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