MSP430F5438AIPZR

ACTIVE

Features for the MSP430F5438A

• 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

• 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

• 16-bit timer TB0, Timer_B with seven capture/compare shadow registers

• Up to four universal serial communication interfaces (USCIs)

• I2C

• Synchronous SPI

• Enhanced UART supports automatic baud-rate detection

• IrDA encoder and decoder

• Synchronous SPI

• USCI_A0, USCI_A1, USCI_A2, and USCI_A3 each support:

• USCI_B0, USCI_B1, USCI_B2, and USCI_B3 each support:

• 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

• Device Comparison summarizes the available family members

All trademarks are the property of their respective owners.

Description for the MSP430F5438A

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.

For complete module descriptions, see the MSP430F5xx and MSP430F6xx Family User’s Guide.